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Book of Abstracts
September 26–28, 2018
Hatay Mustafa Kemal University – HATAY / TURKEY
Organizing Institutions & Sponsors
Hatay Mustafa Kemal University / KORSEM’18 – XVth International Corrosion Symposium Editor / Prof. Dr. Ali Tuncay ÖZYILMAZ Visual Design / İbrahim FİLAZİ ISBN / 978-975-7989-61-5 Publisher / XV. International Corrosion Symposium Organization Committee Publishing Year / September 2018 Publication / © 2018 Hatay Mustafa Kemal University; All rights of this publication belong to Hatay Mustafa Kemal University. Can not be reproduced in part or in full without written permission. Published as e-book at http://korsem18.mku.edu.tr/.
Tel: + 90 326 245 58 45 Faks: + 90 326 245 58 67
All rights and responsibilities of the submissions in this book belong to their authors.
This publication is free of charge and cannot be sold for money.
Can be used as a reference.
All papers in this book were presented at the 15th International Corrosion Symposium held at Hatay Mustafa Kemal University Atatürk
Congress Center between 26 and 28 September 2018, after receiving the approval of the blind-peer-review.
Main Sponsor
Sponsors
SU
PPO
RTED
BY T
UBIT
AK
EFC EVENT NO: 436
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | I
BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
PREFACE
Dear Colleagues of Universal Corrosion Community,
We are honored to host the KORSEM’18-The XVth International Corrosion Symposium in Turkey.
On behalf of the Organization Committee, it is my privilege to extend our regards to all our invited
lecturers and the participants which shared their special scientific findings and high academic knowledge,
in the ever expanding world of corrosion.
I would like to commence by quoting some specific numbers to give a broad picture of the status of
the KORSEM’18. The number of abstracts submitted was about 115; approximately 90 oral presentations
have been scheduled, together with 25 posters.
We had the opportunity to listen to about three Invited and Pleanary Talks in this meeting, including
our world-renowned Plenary and Invited Speakers: Prof. Dr. Ali Fuat Cakır (Istanbul Technical
University), Prof. Dr. Kemal Nisancioglu (Department of Materials Technology, Norwegian University of
Science and Technology/Norway), Prof. Dr. Nazan Savas (Hatay Mustafa Kemal University)
KORSEM’18 has received the support of many people and companies. Their support to the
symposium as a whole is duly appreciated. Particularly, we would like to thank Borçelik Çelik Sanayii
Ticaret A.Ş, TUBITAK (The Scientific and Technological Research Council of Turkey), Hatay
Metropolitan Municipality and Hatay Mustafa Kemal University Rectorate for their great support.
The organizing committee, the scientific committee and the board members of the Corrosion
Association participated in the scientific meetings and presented oral and poster presentations. On the
other hand, we are happy to turn KORSEM’18 into a worldwide event. I would also like to express my
gratitude and gratitude to all my colleagues who have contributed to this organization.
I wish KORSEM’18 will give you an efficient experience. I hope that KORSEM’18 will offer a
versatile platform for formal and informal discussions to both academic colleagues and industry
stakeholders and will encourage new collaborative views.
On the Behalf of Organizing Committee
Prof. Dr. Ali Tuncay OZYILMAZ
President of Symposium
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | II
BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
SCIENTIFIC COMMITTEE
Prof. Ronald G. BALLINGER
MIT, Nuclear Engineering and Materials Science and Engineering / USA
Prof. Dr. Luca BERTOLINI
Politecnico di Milano, Dipartimento di Chimica, Materiali / Italy
Prof. Dr. Bob COTTIS
School of Materials, The University of Manchester / UK
Prof. Dr. Kazimierz DAROWICKI
Gdansk University of Technology, Gdansk / Poland
Prof. Dr. Anne NEVILLE
School of Mechanical Engineering, University of Leeds / UK
Prof. Dr. Kemal NİŞANCIOĞLU
Department of Materials Technology, Norwegian University of Science and Technology / Norway
Prof. Dr. Judit TELEGDI
Institute of Surface Chemistry and Catalysis-Chemical Research Center / Hungary
Prof. Dr.-Ing. Michael RAUPACH
Institut für Bauforschung der RWTH Aachen / Germany
Prof. Dr.-Ing. Michael SCHÜTZE
DECHEMA e.V. Karl-Winnacker Imstitute Frankfurt / Germany
Dr. Noam ELIAZ
School of Mechanical Engineering Tel – Aviv University / Israel
Prof. Dr. Ali Abbas AKSÜT
Ankara University, Science Faculty, Ankara / Turkey
Prof. Dr. Mustafa ANIK
Eskişehir Osmangazi University, Engineering Faculty, Eskişehir / Turkey
Prof. Dr. Murat ATEŞ
Namık Kemal University, Science & Arts Faculty, Tekirdağ / Turkey
Prof. Dr. Gözen BEREKET
Osman Gazi University, Eskişehir / Turkey
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | III
BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
Prof. Dr. Semra BİLGİÇ
Ankara University, Science Faculty, Ankara / Turkey
Prof. Dr. Ahmet ÇAKIR
Dokuz Eylül University, Engineering Faculty, İzmir / Turkey
Prof. Dr. Ali Fuat ÇAKIR
İstanbul Technical University, Engineering Faculty, İstanbul / Turkey
Prof. Dr. İlyas DEHRİ
Çukurova University, Science & Arts Faculty, Adana / Turkey
Prof. Dr. Mehmet ERBİL
Çukurova University, Science & Arts Faculty, Adana / Turkey
Prof. Dr. Mehmet GAVGALI
Atatürk University, Engineering Faculty, Erzurum / Turkey
Prof. Dr. Melike KABASAKALOĞLU
Ankara University, Science Faculty, Ankara / Turkey
Prof. Dr. İsmail Hakkı KARAHAN
Hatay Mustafa Kemal University, Science & Arts Faculty, Hatay / Turkey
Prof. Dr. Gülfeza KARDAŞ
Çukurova University, Science & Arts Faculty, Adana / Turkey
Prof. Dr. Muzaffer ÖZCAN
Çukurova University, Education Faculty, Adana / Turkey
Prof. Dr. Ali Tuncay ÖZYILMAZ
Hatay Mustafa Kemal University, Science & Arts Faculty, Hatay / Turkey
Prof. Dr. Ramazan SOLMAZ
Bingöl University, Science & Arts Faculty, Bingöl / Turkey
Prof. Dr. Tunç TÜKEN
Çukurova University, Science & Arts Faculty, Adana / Turkey
Prof. Dr. Mustafa ÜRGEN
İstanbul Technical University, Engineering Faculty, İstanbul / Turkey
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | IV
BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
Prof. Dr. Birgül YAZICI
Çukurova University, Science & Arts Faculty, Adana / Turkey
Prof. Dr. Sibel ZOR
Kocaeli University, Science & Arts Faculty, Kocaeli / Turkey
Assoc. Prof. Dr. Ender Gökhan GECE
Bursa Technical University, Faculty of Natural Sciences, Architecture and Engineering, Bursa / Turkey
Assoc. Prof. Dr. Hüsnü GERENGİ
Düzce University, Engineering Faculty, Düzce / Turkey
Assoc. Prof. Dr. Hülya KELEŞ
Osmaniye Korkut Ata University, Science & Arts Faculty, Osmaniye / Turkey
Assoc. Prof. Dr. Güray KILINÇÇEKER
Çukurova University, Science & Arts Faculty, Adana / Turkey
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | V
BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
ORGANIZATION COMMITTEE
Honorary President of Symposium
Prof. Dr. Hasan KAYA
Rector of Hatay Mustafa Kemal University
President of Symposium
Prof. Dr. Ali Tuncay ÖZYILMAZ
Hatay Mustafa Kemal University
Hononary Presidents of Corrosion Association Turkey
Prof. Dr. Ali Fuat ÇAKIR
Istanbul Technical University
Prof. Dr. Mehmet ERBİL
Çukurova University
President of Corrosion Association Turkey
M. Sc. Eng. Necil KURTKAYA
Corrosion Association Turkey
Secretary of Symposium
Assoc. Prof. Dr. Alime Ebru AYDIN
Hatay Mustafa Kemal University
Executive Committee
Prof. Dr. Gül ÖZYILMAZ
Hatay Mustafa Kemal University
Asst. Prof. Dr. Hatice DANAHALİLOĞLU
Hatay Mustafa Kemal University
Prof. Dr. Şana SUNGUR
Hatay Mustafa Kemal University
Asst. Prof. Dr. Sezer GÖYCINCIK
Hatay Mustafa Kemal University
Assoc. Prof. Dr. Mustafa Kemal SANGÜN
Hatay Mustafa Kemal University
Asst. Prof. Dr. Ersen GÖKTÜRK
Hatay Mustafa Kemal University
Assoc. Prof. Dr. Cahit DEMETGÜL
Hatay Mustafa Kemal University
Res. Asst. Hüseyin ERDAL
Hatay Mustafa Kemal University
Assoc. Prof. Dr. Yusuf NUR
Hatay Mustafa Kemal University
Chemist, M. Sc. İbrahim FİLAZİ
Hatay Mustafa Kemal University
Assoc. Prof. Dr. Yasin YÜCEL
Hatay Mustafa Kemal University
Chemist Çağla SÜRMELİOĞLU
Hatay Mustafa Kemal University
Assoc. Prof. Dr. Cemile ÖZDEMİR DİNÇ
Hatay Mustafa Kemal University
Asst. Prof. Dr. Didem ÇAKMAK
Hatay Mustafa Kemal University
Asst. Prof. Dr. Zeki AYDIN
Hatay Mustafa Kemal University
Asst. Prof. Dr. Neslihan BEYAZIT
Hatay Mustafa Kemal University
Asst. Prof. Dr. Süleyman YALÇINKAYA
Hatay Mustafa Kemal University
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | VI
BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
PROGRAM OVERVIEW 26.09.2018
08:00 – 09:00 Registration
09:00 – 10:00
THE TURKISH NATIONAL ANTHEM – STAND IN SILENCE
Opening Speechs Prof. Dr. Ali Tuncay ÖZYILMAZ (President of Symposium)
H. Necil KURTKAYA (President of Turkish Corrosion Association) Prof. Dr. Hasan KAYA (Rector of Hatay Mustafa Kemal University) Doç. Dr. Lütfü SAVAŞ (Mayor of Hatay Metropolitan Municipality)
Erdal ATA (Governor of Hatay)
10:00 – 10:30 Prof. Dr. Ali Fuat ÇAKIR (Invited Speaker; TURKEY)
“KOROZYON”
10:30 – 10:45 Coffee Break
OPENING SESSION – HALL A / Chair: Prof. Dr. Ali Fuat ÇAKIR
10:45 – 12:15
Assoc. Prof. Dr. Özgür DORUK (Invited Speaker; TURKEY)
“Cinevision Presentation in Memory of Prof. Dr. Mustafa DORUK”
Prof. Dr. Kemal NİŞANCIOĞLU (Invited Speaker; NORWAY)
“Nanoscale Segregation Layers in Localized Corrosion of Aluminum Alloys”
Prof. Dr. Nazan SAVAŞ (Invited Speaker; TURKEY)
“Korozyonun Sağlık Üzerine Etkileri”
12:15 – 13:30 Lunch Break
13:30 – 13:45 Bülent Celal SEYALIOĞLU (Director of Borçelik AR-GE; TURKEY)
“Borçelik AR-GE ve Korozyon”
Po
ster
Pre
sen
tati
on
s
(P1
– P
11
)
13:50 – 15:10 Oral Presentations (1st Session)
15:10 – 15:30 Coffee Break
15:30 – 16:50 Oral Presentations (2nd Session)
17:15 – 19:00 Antakya Mosaic Museum Tour
19:30 – 22:30 Dinner at Çınar Restaurant in Kuzeytepe
27.09.2018
09:00 – 10:00 Oral Presentations (3rd Session)
Po
ster
Pre
sen
tati
on
s
(P1
2 –
P2
6)
10:15 – 12:00
Open Forum – Panel / HALL A
“Tarihi Eserlerin Korozyonu ve Korunması”
(Corrosion and Protection of Historical Artifacts)
Prof. Dr. Mehmet ERBİL (Session Chair)
Prof. Dr. Yaşar Selçuk ŞENER (TURKEY)
Prof. Dr. Tunç TÜKEN (TURKEY)
Assoc. Prof. Dr. Mahmut AYDIN (TURKEY)
Asst. Prof. Dr. Serdar GİRGİNER(TURKEY) 12:00 – 13:30 Lunch Break
13:30 – 15:10 Oral Presentations (4th Session)
Po
ster
Pre
sen
tat
ion
s (P
27
– P
40
)
15:10 – 15:30 Coffee Break
15:30 – 16:50 Oral Presentations (5th Session)
17:15 – 20:00 Antakya City Tour
20:30 – 22:30 Dinner at Hidro Restaurant in Harbiye
28.09.2018
09:00 – 10:20 Oral Presentations (6th Session)
Po
ster
Pre
sen
ta
tio
ns
(P4
1 –
P5
1)
10:20 – 10:40 Coffee Break
10:40 – 12:00 Oral Presentations (7th Session)
12:00 – 13:30 Lunch Break
13:30 – 14:30 Congress Evaluation Panel and Closing / HALL A
15:00 – 18:30 Samandağ City Tour
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | VII
BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
PROGRAM of ORAL PRESENTATIONS 26.09.2018 Wednesday
Session A1 – HALL A / Chair: Prof. Dr. Kemal NİŞANCIOĞLU 26.09.2018 / 13:50 – 15:10
A1.S1 S. Burcu Akyüz Akman (TURKEY)
“Korozyona Karşı Doğa Dostu Koruma: Sıcak Daldırma Galvaniz”
A1.S2 S1 Abed SNEINEH (USA)
“Solid State Reference Electrode & Industrial Best Practices”
A1.S3 S2 Joffin GEORGE (INDIA)
“A Study on Torch Light Analogy of Cathodic Protection System”
A1.S4 S3
Joffin GEORGE (INDIA)
“Resistive, Capacitive & Inductive Coupling of Alternating Current on Cathodic
Protection Equivalent Circuit”
Session B1 – ANFI 1 / Chair: Prof. Dr. Nurhan CANSEVER 26.09.2018 / 13:50 – 15:10
B1.S1 S4
Cem ÖRNEK, Christofer LEYGRAF, Jinshan PAN (SWEDEN)
“Towards Understanding Atmospheric and Aqueous Localised Corrosion of
AA6063-T5 Aluminium Alloy – A Comprehensive Study Using Time-Lapse SKPFM,
In-Situ AFM and Conventional Electrochemistry”
B1.S2 S5
Cem ÖRNEK, Marie LÅNGBERG, Jonas EVERTSSON, Gary HARLOW, Weronica
LİNPÉ, Eleonora BETTİNİ, Lisa RULLIK, Francesco CARLÀ, Roberto FELICI, Ulf
KIVISÄKK, Edvin LUNDGREN, Jinshan PAN (SWEDEN)
“Passivity Break down on Duplex Stainless Steel Investigated by In-situ
Synchrotron Surface X-ray Analyses”
B1.S3 S6
Mehmet Burak KOCA, Rasiha Nefise MUTLU, Gülfeza KARDAŞ, Birgül YAZICI
(TURKEY)
“ZAMAK-2 Alloy Prepared by Powder Metallurgy and Investigation of Corrosion
Behavior in 3.5% NaCl”
B1.S4 S7
Talal A. ALJOHANI, Mohammed H. GEESI, A. KAIBA (SAUDI ARABIA)
“The Effect of High-Dose Gamma Radiation on Corrosion Properties of Carbon
Steel and Stainless Steel”
Session C1 – ANFI 2 / Chair: Prof. Dr. Mehmet GAVGALI 26.09.2018 / 13:50 – 15:10
C1.S1 S8 Ahmet ÇAKIR (TURKEY)
“Nano Yapılı İmplant Yüzeylerinin Korozyon Davranışları”
C1.S2 S9
Efe Çetin YILMAZ (TURKEY)
“Investigation of Attrition-Corrosion Behaviour of Nano-Filed Dental Composite
Materials”
C1.S3 S10
Efe Çetin YILMAZ (TURKEY)
“Effect of Thermal Cycling on Contact-Wear Behaviour of Composite Materials in
Chemical Corrosion Environment”
C1.S4 S11
Şengül DANIŞMAN, Tuba DEMİREL (TURKEY)
“Investigation of the Corrosion Behaviours of DLC Coatings Produced by PVD
Technique”
Session D1 – HALL D / Chair: Prof. Dr. İlyas UYGUR 26.09.2018 / 13:50 – 15:10
D1.S1 S12 Narimene El KORSO, Fatima Zohra SEBBA (ALGERIA)
“Polymers as Corrosion Inhibitors for ARMCO Steel in H2SO4 Media”
D1.S2 S13
Güray KILINÇÇEKER, Kayhan KARATEKE, Atilla ÇEKİÇ, Mustafa Kemal SANGÜN
(TURKEY)
“Yumuşak Çeliğin Klorürlü Çözeltilerdeki Korozyon Davranışlarına Kantaron’un
(Hypericum Perforatum L.) Etkisi”
D1.S3 S14
Güray KILINÇÇEKER, Mahmut BAŞ, Ahmet Murat GİZİR, Mustafa Kemal SANGÜN
(TURKEY)
“Mesalazinden Sentezlenen Schiff Bazının Hidroklorik Asit İçeren Ortamda Bakırın
Korozyonuna İnhibitör Olarak Etkisi”
D1.S4 S15 Başak DOĞRU MERT, Mehmet Erman MERT, Gülfeza KARDAŞ, Birgül YAZICI (TURKEY) “Role of Amoklavin on Corrosion Inhibition of Mild Steel in 0.5 M HCl”
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | VIII
BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
Session A2 – HALL A / Chair: Prof. Dr. Ali Tuncay ÖZYILMAZ 26.09.2018 / 15:30 – 16:50
A2.S1 S16 Şennur CANDAN, Serdar ÇİM, Seren EMİR, Ercan CANDAN (TURKEY)
“AZ91 Mg Alaşımlarında Fe Tolerans Limit Değerlerinin Araştırılması”
A2.S2 S17
Şennur CANDAN, Serdar ÇİM, Seren EMİR, Ercan CANDAN (TURKEY)
“AZ91 Mg Alaşımının Korozyonunda Fe’nin Zararlı Etkisinin Azaltılmasında Yeni Bir
Yaklaşım”
A2.S3 S18
Fatiha CHELGHAM, Souheyla BOUDJEMA, Noureddine BOUZID, Mokhetar SAIDI,
Abdecharif BOUMAZA (ALGERIA)
“Influence of Temperature on Microstructure and Corrosion Rate of API N80
Carbon Steel”
A2.S4 S19
Basady GASSAMA, Mustafa Özgür ÖTEYAKA (TURKEY)
“Corrosion Performance of Cryogenic Treated AZ91 Magnesium Alloys in The
Simulated Human Body Fluid”
Session B2 – ANFI 1 / Chair: Prof. Dr. Birgül YAZICI 26.09.2018 / 15:30 – 16:50
B2.S1 S20 Fevzi KELEN, Tarık AYDOĞMUŞ, Mehmet GAVGALI, Burak DİKİCİ (TURKEY)
“Mg/NiTi Metal Matrisli Kompozitlerin Korozyon Duyarlılıkları”
B2.S2 S21 Fevzi KELEN, Tarık AYDOĞMUŞ, Mehmet GAVGALI, Burak DİKİCİ (TURKEY)
“TiNi ile Takviye Edilmiş AZ91D Matrisli Kompozitlerin Korozyon Davranışı”
B2.S3 S22
Pınar PARLAKYİĞİT, Hakan YAYKAŞLI (TURKEY)
“The Effects of Corrosion on Yarn Quality That Arised on Drums at Ring Spinning
Machines”
B2.S4 S23
Gözde TANSUĞ (TURKEY)
“%3 NaCl Çözeltisinde 304 Çeliğinin Çukurcuk Korozyonuna Karşı 3-Amino-5-
Metiltiyo-1H-1,2,4-Triazol ve Sodyum Molibdatın İnhibisyon Etkisi”
Session C2 – ANFI 2 / Chair: Prof. Dr. Ahmet ÇAKIR 26.09.2018 / 15:30 – 16:50
C2.S1 S24
Ebru Emine ŞÜKÜROĞLU, Süleyman ŞÜKÜROĞLU, Yaşar TOTİK, İhsan EFEOĞLU,
Ayşenur ARMAĞAN (TURKEY)
“Titanyum Biyomalzemelerin Tribokorozyon Özelliklerinin Araştırılması”
C2.S2 S25
Süleyman ŞÜKÜROĞLU, Ebru Emine ŞÜKÜROĞLU, Yaşar TOTİK, İhsan EFEOĞLU,
Ayşenur ARMAĞAN (TURKEY)
“Titanyum Alaşımlarının DLC Kaplama Sonrası Tribokorozyon Özelliklerinin
İncelenmesi”
C2.S3 S26 Simge ARKAN, Nurhan CANSEVER, Esra İLHAN SUNGUR (TURKEY)
“630 Kalite Paslanmaz Çeliğin Antiadhesiv Özelliklerine Yüzey Morfolojisinin Etkisi”
C2.S4 S27
Duygu ARSLAN, Nurhan Cansever, Esra ILHAN SUNGUR (TURKEY)
“Microbiologically Induced Corrosion Behavior of N-80 Steel by Gravimetric
Method”
Session D1 – HALL D / Chair: Prof. Dr. Semra BİLGİÇ 26.09.2018 / 15:30 – 16:50
D2.S1 S28
Serap Toprak DÖŞLÜ (TURKEY)
“2,4-Diamino-6-Phenyl-1,3,5 Triazine as Efficient Corrosion Inhibitor for Mild
Steel in HCl Solution”
D2.S2 S29
Serap Toprak DÖŞLÜ, Reşit YILDIZ, İlyas DEHRİ (TURKEY)
Electrochemical Behaviour of Poly(Indole-co-Methyl Acrylate) Coated on Stainless
Steel
D2.S3 S30 Reşit YILDIZ, Serap Toprak DÖŞLÜ, İlyas DEHRİ (TURKEY)
The Use of Sulfanilamide as Corrosion Inhibitor for Mild Steel Protection
D2.S4 S31
Reşit YILDIZ, Başak DOĞRU MERT, İlyas DEHRİ, Birgül YAZICI (TURKEY)
“Adsorption and Inhibition Behavior of 4,6-Diamino-2-Hydroxy-1,3,5-Triazine on
Mild Steel”
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | IX
BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
27.09.2018 Thursday
Session A3 – HALL A / Chair: H. Necil KURTKAYA 27.09.2018 / 09:00 – 10:00
A3.S1 S32
Hadaan PEHLİVAN, Mahmut AYTEKİN (TURKEY)
“Yumuşak Betonarme Çeliğinin Beton Boşluk Suyu ve NaCl Çözeltisi İçerisinde
Korozyon Davranışının İncelenmesi”
A3.S2 S33 Mustafa KOÇER, Murat ÖZTÜRK, Ahmet Arif BOĞA (TURKEY)
“Analytical Study on the Effect of Corrosion to the Construction Performance”
A3.S3 S34
Recep ÇATAR, Murat ÇOLAK (TURKEY)
“Tane İnceltici (TİB) Ve Modifiye Edici (Sr) İlavesinin Etial 177 Alüminyum
Döküm Alaşımının Korozyon Direncine Etkisinin İncelenmesi”
Session B3 – ANFI 1 / Chair: Prof. Dr. İlyas DEHRİ 27.09.2018 / 09:00 – 10:00
B3.S1 S35 Younes KERROUM, Abdallah GUENBOUR, Abdelkbir BELLAOUCHOU, Mohamed
TABYAOUI (MOROCCO) “Surface Corrosion of Austenitic Stainless Steel in the Contaminated Phosphoric Acid”
B3.S2 S36
Nuri SEN, Husnu GERENGI, Ilyas UYGUR, Ertugrul KAYA (TURKEY)
“Corrosion Behavior of Dual-Phase 600 and 800 Steels in %3.5 NaCl
Environment”
B3.S3 S37
Haşim Fırat KARASU, Mine DEMİRSOY (TURKEY)
“Farklı Halat Tiplerinin Korozyon Hızlarının Tafel Ekstrapolasyon Yöntemi ile
Deneysel Olarak Elde Edilmesi”
Session C3 – ANFI 2 / Chair: Prof. Dr. Sibel ZOR 27.09.2018 / 09:00 – 10:00
C3.S1 S38 Polen YILMAZ, Esra ILHAN SUNGUR, Nurhan CANSEVER (TURKEY)
“Microbially Induced Corrosion by Manganese Oxidizing Bacteria”
C3.S2 S39
Douâae OU-YAHIA, Nurhan Cansever, Saad IBNSOUDA KORAICHI, Esra ILHAN
SUNGUR (MOROCCO)
“Marine Microbiologically Influenced Corrosion (MMIC): An Overview”
C3.S3 S40
Yusuf KAYGISIZ, Didem BALUN KAYAN (TURKEY)
“Growth Rate and Heat Treatment Effect on the Corrosion Behavior of a
Directionally Solidified Al-13wt.% Mg2Si Pseudo Eutectic Alloy”
Session D3 – HALL D / Chair: Prof. Dr. Burak DİKİCİ 27.09.2018 / 09:00 – 10:00
D3.S1 S41
Rachid IDOUHLI, Yassine KOUMYA, Mohy Eddine KHADIRI, Abdelaaziz
AITYOUB, Abdessalam ABOUELFIDA, Abdelaziz BENYAICH (MOROCCO)
“Experimental and Theoretical Studies of Cuminaldehyde as Green Corrosion
Inhibitors for S300 Steel”
D3.S2 S42
Asmae BERRISSOUL, Ali DAFALI, Karima CHERRAK, Abderrahmane ROMANE
(MOROCCO)
“A Comparative Study on the Corrosion Behavior of Mild Steel and Aluminum
Alloy in Acidic Medium Using Green Corrosion Inhibitor”
D3.S3 S43 N. MECHBAL, Y. KARZAZI, M. BOUHRIM, M. BNOUHAM (MOROCCO) “Anticorrosion and Antioxidant Activities of Daphne Gnidium Aqueous Extract”
Session A4 – HALL A / Chair: Prof. Dr. Gözen BEREKET 27.09.2018 / 13:30 – 15:10
A4.S1 S44
Levent ORGAN, Öykü G. ZALOĞLU, Berk Gazioğlu (TURKEY)
“Susceptibility of Aluminum Alloys Produced by Different Casting Techniques to
Localized Corrosion Studied by Electrochemical Noise Measurements”
A4.S2 S45
Furkan KALAN, Fadime AKPINAR, Taha Çağrı ŞENOCAK, Kadri Vefa EZİRMİK
(TURKEY)
“Sıcak Daldırma Yöntemi ile Alüminyum Kaplanmış Yapı Çeliklerinin Korozyon
Özelliklerinin İncelenmesi”
A4.S3 S46 Ahmet YAYLI, Hülya DEMİRÖREN (TURKEY)
“Nükleer Tesislerde Korozyon”
A4.S4 S47 Gurbet YERLİKAYA, Abrar AHMAD, Murat FARSAK, Gülfeza KARDAŞ (TURKEY)
“Effect Of Thiadiazole Derivative Inhibitor On Acid Corrosion Of Mild Steel”
A4.S5 S48
Hadaan PEHLİVAN, Mahmut AYTEKİN (TURKEY)
“Sepiyolit Katkılı Çimento Harç Numunelerinin NaCl Çözeltisi İçerisinde
Korozyon Davranışının Polarizasyon Direnci Yöntemi ile İncelenmesi”
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | X
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Session B4 – ANFI 1 / Chair: Prof. Dr. Tunç TÜKEN 27.09.2018 / 13:30 – 15:10
B4.S1 S49 Ramazan SOLMAZ (TURKEY)
“NiPd Elektrokatalizörlerin Elektroliz Koşullarındaki Korozyon Davranışları”
B4.S2 S50
Ramazan SOLMAZ (TURKEY)
“Metal Çöktürülmüş Kendi Kendine Biriken Tek Tabakalı Metil Rodanin Filmler:
Korozyon İnhibisyon Uygulamaları”
B4.S3 S51 Sevgi ATEŞ, Evrim BARAN, Birgül YAZICI (TURKEY)
“Corrosion Behavior of SnO2-Coated Mild Steel in Hydrochloric Acid Solution”
B4.S4 S52
Nihat Erdem BERBER, Necati ATABERK, Mürsel EKREM, Ahmet Avcı (TURKEY)
“Korozif Ortamın Nano Elyaf Katkılı Epoksi ile Yapıştırılmış Bindirme
Bağlantılarında Eksenel Darbe Davranışlarına Etkisi”
B4.S5 S53
Elvan ARAZ, Erkan KARAYİĞİT (TURKEY)
“Yüksek Karbonlu Çelik Telin Soğuk Deformasyonu Sırasında Çinko Fosfat
Kaplama İşlemine Alternatif Yeni Nesil Kaplama Yöntemi”
Session C4 – ANFI 2 / Chair: Prof. Dr. Şennur CANDAN 27.09.2018 / 13:30 – 15:10
C4.S1 S54
Güray KILINÇÇEKER, Sema ÇELİK, Mustafa Kemal SANGÜN (TURKEY)
“The Inhibition Effects of Phenol Red on Corrosion Behaviour of Copper in
Chloride Solution”
C4.S2 S55
Güray KILINÇÇEKER, Nida YEŞİLYURT, Mustafa Kemal SANGÜN (TURKEY)
“The Effects of Polycarboxylate Based Super Plasticizer on Corrosion Resistance
of Steel Reinforcement In Concrete”
C4.S3 S56
Buket BOZKURT, Sibel ZOR (TURKEY)
“PANI/NiO ve PANI/TiO2 Kompozitlerin Elektrokimyasal Olarak L304 Çelik
Yüzeyine Kaplanması ve Korozyon Davranışlarının İncelenmesi”
C2.S4 S57
Sibel ZOR, Nargiz ILMIEVA (TURKEY)
“Corrosion Behavior of PANi/EPOXY/NANO SnO2 Polymeric Nanocomposite
Coated Stainless Steel İn 3.5 % NaCl
C4.S5 S58
Mustafa KOCABAŞ, Nurhan CANSEVER
“Anodize Alüminyum Yüzeylerdeki Bor Nitrür Takviyeli Akımsız Nikel
Kaplamanın Özelliklerine Isıl İşlemin Etkisi”
Session D4 – HALL D / Chair: Assoc. Prof. Dr. Hüsnü GERENGİ 27.09.2018 / 13:30 – 15:10
D4.S1 S59
El Hassania LOUKILI, Nazha SAIDI, Mohamed RAMDANI, Naoual MECHBAL,
Asmae BERRISSOUL (MOROCCO)
“Anti-Corrosion Evaluation of the Opuntia Dillenii Flowers Extract for Mild Steel
in 1 M HCl”
D4.S2 S60
Fatima BOUHLAL, Aimad MAZKOUR, Najoua LABJAR, Mohammed ELMAHI,
Elmostpha LOTFI, Abdelmajid SKALLI, Souad EL HAJJAJI (MOROCCO)
“Chemical and Electrochemical Studies of the Inhibition Performance of the
Organic Waste Extract Against the Corrosion of C38 Steel in 1M Hydrochloric
Acid”
D4.S3 S61
Demet ÖZKIR (TURKEY)
“An Electrochemical Study Examining the Effect of a Newly Synthesized
Aromatic Type of a Schiff Base on the Behaviour of the Temperature of Mild
Steel in HCl Solution”
D4.S4 S62
Ayşe ONGUN YÜCE
“5-Phenyl-1H-1,2,4-Triazole-3-Thiol’ in (5-PTT) Asidik Ortamda Yumuşak
Çeliğin Korozyonuna İnhibisyon Etkisinin Teorik Olarak Araştırılması”
D4.S5 S63
Gökhan GECE, Semra BİLGİÇ (TURKEY)
“Disentangling The Relationship Between Inhibition Effect and Structure of Two
Drugs: A Theoretical Study”
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
Session A5 – HALL A / Chair: Prof. Dr. Gülfeza KARDAŞ 27.09.2018 / 15:30 – 16:50
A5.S1 S64
Aimad MAZKOUR, Najoua LABJAR, El Mostapha LOTFI, Mohammed EL MAHI,
Souad El Hajjaji (MOROCCO)
“Corrosion Behavior of a Super-ferritic Stainless Steel in Industrial and
Synthetic Phosphoric Acid Solutions at Different Temperatures”
A5.S2 S65
Hüsnü GERENGİ, Ertuğrul KAYA, Fatima ERMAN BAĞCI (TURKEY)
“Etilen Glikolün Korozyon İnhibitörü Olarak %3,5 NaCl Ortamında AA7075
Alaşımı İçin Kullanılabilme Potansiyelinin Araştırılması”
A5.S3 S66
Mesut YILDIZ, Ayhan YILDIRIM, Serkan ÖZTÜRK, Hana LAHBIB, Kadir
GÖKŞEN, Gözen BEREKET, Hüsnü GERENGİ (TURKEY)
“St37 Çeliğinin 1 M HCl Ortamındaki Korozyon Mekanizmasına İyonik Olmayan
Yüzey Aktif Maddenin Etkisinin Araştırılması”
A5.S4 S67
Serkan ÖZTÜRK, Ayhan YILDIRIM (TURKEY)
“Semi-Crown Ether Linked Symmetric Cationic Gemini Surfactants, Synthesis
and Their Corrosion Inhibition Effects on Carbon Steel in 1 M HCl Solution”
Session B5 – ANFI 1 / Chair: Prof. Dr. Ramazan SOLMAZ 27.09.2018 / 15:30 – 16:50
B5.S1 S68 Asmaa WAKRIM, Jamal JAMAL EDDINE, Mohammed AZZI (MOROCCO) “Electrochemical Oxidation of Azo Dye on Platinum and Boron Doped Diamond
Anodes Using Electro-Fenton Technology”
B5.S2 S69
Yassine KOUMYA, Rachid IDOUHLI, Mohyeddine KHADIRI, Abdelaaziz Ait
YOUB, Abdesselam ABOUELFIDA, Abdelaziz BENYAICH (MOROCCO)
“Mott Schottky Analysis and Chronoamperometric Measurements for the
Passivation of the AISI 321 Stainless Steel”
B5.S3 S70
Nisrine BENZBIRIA, Siham ECHIHI, Wafaa QAFSAOUI, Mustapha ZERTOUBI,
Mohamed AZZI (MOROCCO)
“New Insights into Oxygen Reduction Reaction on Copper in Neutral Na2SO4
Solution Using Electrochemical Methods”
B5.S4 S71
Rasiha Nefise MUTLU, Mehmet Burak KOCA, Gülfeza KARDAŞ, Birgül YAZICI (TURKEY) “Fabrication and Characterization of the Ni-based Superalloy, Investigation of
Hot Corrosion Behaviour”
Session C5 – ANFI 2 / Chair: Prof. Dr. A. Murat GİZİR 27.09.2018 / 15:30 – 16:50
C5.S1 S72
Gül ÖZYILMAZ, Çağla Sürmelioğlu, İbrahim FİLAZİ, Ali Tuncay ÖZYILMAZ (TURKEY)
“ZnNiMo Alaşım Kaplı Bakır Yüzeyinde Polipirol Film Sentezi için Yanıt Yüzey
Yönteminin Uygulaması”
C5.S2 S73
Ali Tuncay ÖZYILMAZ, Çağla Sürmelioğlu, İbrahim FİLAZİ, Cumali ÇELİK (TURKEY)
“Organik Madde Varlığında Sentezlenen Poli(N-Etil Anilin) Kaplamanın
Korozyon Performansı”
C5.S3 S74 Mustafa KAPTANOĞLU (TURKEY)
“Effect of Welding Current on Wear and Hardness Properties of Coatings”
C5.S4 S75
Mustafa KAPTANOĞLU (TURKEY)
“Welding Current Effect on Chemical Compositon and Microstructure of
Coatings”
Session D5 – HALL D / Chair: Prof. Dr. Esra İlhan SUNGUR 27.09.2018 / 15:30 – 16:50
D5.S1 S76
Duygu KADAIFCILER, Duygu ARSLAN, Nurhan CANSEVER, Esra ILHAN-
SUNGUR (TURKEY)
“Influences of Glucose and Starch on Corrosion Behavior of Galvanized Steel”
D5.S2 S77 Gökmen SIĞIRCIK (TURKEY)
“Inhibitor Effect of 1-Benzyl-3-Methylimidazolium Tetrafluoroborate on Mild Steel”
D5.S3 S78
Siham ECHIHI, Nisrine BENZBIRIA, Wafaa QAFSAOUI, Maria BOUDALIA,
Abdellah GUENBOUR, Abdelkebir BELLAOUCHOU, Mohamed TABYAOUI (MOROCCO)
“Thiadiazole Derivatives Adsorption on Copper Surface in Neutral Sulphate Media”
D5.S4 S79
Asmae SAADY, M.TALEB, K. ISMAILY ALAOUI, A. EL BIACHE, A. MAHFOUD, G.
ALHOUARI, B. HAMMOUTI, F. EL-HAJJAJI (MOROCCO)
“Experimental and Theoretical Tools for Corrosion Inhibition Study for Mild Steel in
Hydrochloric Acid Medium by New Indanones Derivatives”
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | XII
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28.09.2018 Friday
Session A6 – HALL A / Chair: Prof. Dr. Mehmet ERBİL 28.09.2018 / 09:00 – 10:20
A6.S1 S80
Tuğba Gürmen ÖZÇELİK, Canan URAZ (TURKEY)
“Investigation of the Operating Conditions on Electroless Nickel Plating Over
ABS Plastic”
A6.S2 S81 Canan URAZ, Tuğba Gürmen ÖZÇELİK (TURKEY)
“Electroless Metal Plating Over ABS Plastic”
A6.S3 S82
Seda GUNESDOGDU SAGDINC, Sibel ZOR, Elif YILDIZ (TURKEY)
“Corrosion Inhibition Efficiency and Theoretical Studies of Benzamide and
Thioacetamide”
A6.S4 S83
Onur ÇOMAKLI, Mustafa YAZICI, Tuba YETİM, A. Fatih YETİM, Ayhan ÇELİK (TURKEY)
“Effect of Ag Amount on Electrochemical Properties of Ag-Doped ZrO2
Nanocomposite Ceramic Coated CP Titanium Implant Material”
Session B6 – ANFI 1 / Chair: Assoc. Prof. Dr. Gökhan GECE 28.09.2018 / 09:00 – 10:20
B6.S1 S84
Fatma KAYA, Ibrahim Halil GECİBESLER, Ramazan SOLMAZ (TURKEY)
“Corrosion Inhibition of Mild Steel in 1M HCI Solution by Rheum Ribes L. (Işgın)
Flower Extracts”
B6.S2 S85
Ali GÜNEN, Erdoğan KANCA, Mehmet DEMİR (TURKEY)
“Farklı Difüzyonel Kaplamaların Nitrik Asit Çözeltisi İçerisindeki Korozyon
Davranışları”
B6.S3 S86
Ali GÜNEN, Zeki AYDIN, İsmail Hakkı KARAHAN (TURKEY)
“Borlama, Titanyumlama ve Vanadyumlama Uygulanmış AISI 1060 Çeliğinin
Sülfürik Asit Çözeltisi İçerisindeki Korozyon”
B6.S4 S87
Ali GÜNEN, Erdoğan KANCA, Vedat YEĞİN (TURKEY)
“Farklı Difüzyonel Kaplamalar Uygulanmış AISI 1060 Çeliğinin Hidroflorik Asit
Çözeltisi İçerisindeki Korozyon Davranışlarının İncelenmesi”
Session C6 – ANFI 2 / Chair: Prof. Dr. İsmail Hakkı KARAHAN 28.09.2018 / 09:00 – 10:20
C6.S1 S88
Ali TOZAR, İsmail Hakkı KARAHAN (TURKEY)
“Ti6Al4V Biyomedikal İmplantlar Üzerine Elektroforetik Olarak Depolanan HA /
CTS Biyokompozit Kaplamaların Korozyon Direncinin İncelenmesi”
C6.S2 S89
Burçak AVCI, Dilan ER, Mustafa ÜRGEN (TURKEY)
“Galvanic Coupling Behavior Between Titanium Based Nitride Coatings and
Steel”
C6.S3 S90
Fadime AKPINAR, Furkan KALAN, Taha Çağrı ŞENOCAK, Burak DİKİCİ, Kadri
Vefa EZİRMİK (TURKEY)
“Eloksal İşlemi Uygulanan Alüminyum Alaşımlarının Asidik ve Alkali Ortamlarda
Korozyon Özelliklerinin İncelenmesi”
C6.S4 S91
Kağan YURDAL, İsmail Hakkı KARAHAN (TURKEY)
“Effect of Current Density on Materials and Corrosion Properties of Films Pulse
Electrodeposited from Pyrophosphate Solutions Containing Cu and Zn Ions”
Session D6 – HALL D / Chair: Assoc. Prof. Dr. Güray KILINÇÇEKER 28.09.2018 / 09:00 – 10:20
D6.S1 S92
Walid BELMAGHRAOUI, Aimad MAZKOUR, Adil El YADANI, Mourad HARIR,
Souad El HAJJAJI (MOROCCO)
“The Corrosion Inhibitory Effect of Ziziphus Lotus Oil Extract on C38 Carbon
Steel in 1M HCl Media”
D6.S2 S93 Hamid TAYEBI, Siham ECHIHI (MOROCCO)
Corrosion Inhibition of Carbon Steel in HCl Solution
D6.S3 S94
Ece Altunbaş ŞAHİN, Ramazan SOLMAZ, İbrahim Halil GEÇİBESLER, Gülfeza
KARDAŞ (TURKEY)
“Phoenix Dactylifera Çekirdeğinin (Hurma Çekirdeği) Asidik Ortamda Korozyon
İnhibitörü Olarak Değerlendirilmesi”
D6.S4 S95
Ali Tuncay ÖZYILMAZ, Veysel Soydal ATASEVEN, Alpay DEMİRAL, Çağla
SÜRMELİOĞLU (TURKEY)
“The Corrosive Effect of Iodine Solution in Different Concentrations Used For
Disinfection of Surgical Instruments”
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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Session A7 – HALL A / Chair: Prof. Dr. Mustafa ÜRGEN 28.09.2018 / 10:40 – 12:00
A7.S1 S96
Recep ARICI (TURKEY)
“Robotik Tandem Gazaltı Ark Kaynağında Kaynak İlerleme Hız Değişiminin
Mekanik ve Korozyon Davranışlarına Olan Etkisinin İncelenmesi”
A7.S2 S97
Zahra AKOUNACH, Mohammed BENMESSAOUD, Ahmed Al MOFARI, Souad El
HAJJAJI (MOROCCO)
“Inhibition of the Corrosion of Aluminum in 1M HCl Solution by Two Extract of
Plants”
A7.S3 S98
Nadia LOUDJANI, Mostepha BENCHIHEUB, Mohamed BOUOUDINA (ALGERIA)
“Structural and Magnetic Properties of Nanocrystalline Co30Ni70 Alloy Prepared
by Mechanical Alloying”
A7.S4 S99 Souad AYADI, Ali HADJI (ALGERIA)
“Development of A Steel For Crushing”
Session B7 – ANFI 1 / Chair: Prof. Dr. Seda GÜNEŞDOĞDU SAĞDINÇ 28.09.2018 / 10:40 – 12:00
B7.S1 S100
Ali Tuncay ÖZYILMAZ, İbrahim FİLAZİ, A. Ebru AYDIN, Çağla SÜRMELİOĞLU,
Gül ÖZYILMAZ (TURKEY)
“Investigation of the Effect of Additive and Electrolyte Concentrations on
Corrosion and Electrical Resistance of Polypyrrole Coating by Statistical
Experimental Design Techniques”
B7.S2 S101
Ali Tuncay ÖZYILMAZ, İbrahim FİLAZİ, Çağla SÜRMELİOĞLU, Gül ÖZYILMAZ
(TURKEY)
“Investigation of Corrosion Performance of Poly(o-Anisidine) Films Synthesized
on ZnNi and ZnNiMo Coated Copper Surface”
B7.S3 S102 Elif Sena KIRMIZIYAKA, İnci ÇINAR (TURKEY)
“Corrosive Effect in Food Industry” “Gıda Endüstrisinde Korozyonun Etkisi”
B7.S4 S103
Ayşe Nur ACAR, Rasiha Nefise MUTLU, Abdul Kadir EKŞİ, Ahmet EKİCİBİL,
Birgül YAZICI (TURKEY)
“Corrosion Properties of Austenitic and Martensitic Stainless Steels Produced by
Powder Metallurgy Method”
Session C7 – ANFI 2 / Chair: Prof. Dr. Esma SEZER 28.09.2018 / 10:40 – 12:00
C7.S1 S104
İrem Cemre TÜRÜ, Seda Aysel TEPE, Ahmet YAYLI, Nurhan CANSEVER
(TURKEY)
“Electrochemical Behavior of Ti6Al4V Alloy in Salt Water and Simulated Body
Fluid”
C7.S2 S105
Emine Feyza ŞÜKÜR, Halil Burak KAYBAL, Hasan ULUS, Ahmet AVCI (TURKEY)
“Asidik Ortamın Bor Nitrür (BN) Nano Takviyeli Epoksi Kompozit Malzemenin
Aşınma Davranışına Etkisinin İncelenmesi”
C7.S3 S106
Emine Feyza ŞÜKÜR, Gürol ÖNAL, Ahmet AVCI (TURKEY)
“Korozif Ortamın Bazalt Elyaf Takviyeli Epoksi Kompozitlerin Tribolojik
Özellikleri Üzerine Etkisi”
C7.S4 S107 Recep ÇATAR, Hikmet ALTUN (TURKEY)
“Investigation of The Corrosion Properties of Anodized AZ31 Magnesium Alloys”
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | XIV
BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
PROGRAM of POSTER PRESENTATIONS
26.09.2018 Wednesday / 13:30 – 16:30
P1 Toufik KERROUMI, Amel BENDOUDA (ALGERIA)
“Use of Natural Substances for Water Disinfection of the Germs Induisants Uro-Genital
Infections”
P2 Okay ÖZÜPEK, Ömer Faruk ÖZKAN, Mümin ÇITAK (TURKEY)
“Çinko Kaplı Çelik Tellerin Kromatlama İşlemi İle Korozyon Dayanımının Arttırılması”
P3 Selma ATTABI, Majda MOKHTARI, Yasmina TAIBI, Hicham ELMSELLEM (ALGERIA)
“Enhancing the Corrosion Reisistance of a 2205 Duplex Stainless Steel by Ion Nitriding”
P4 Burak AY, Başak DOĞRU MERT, Emel YILDIZ, Birgül YAZICI (TURKEY)
“The Inhibition of 2,6-Pyridinedicarboxylic Acid on Mild Steel: Experimental and
Computational Investigations”
P5 Aysel BÜYÜKSAĞİŞ, Meltem DİLEK (TURKEY)
“The Use of Papaver Somniferum L. Plant Extract as Corrosion Inhibitor”
P6 Mohamed LAOURAYED, Mouloud El MOUDANE (MOROCCO)
“Kinetics and Thermodynamic Studies of Corrosion Inhibition of Mild Steel Using
Phosphate Glass in 1M HCl Solution”
P7 Sabrina Sarra AICHE, Mohammed BELBACHIR (ALGERIA) “Cationic Polymerization of Myrcene Catalysed by Kaolin of Tounane (Algerian Clay)”
P8 Fatiha CHELGHAM, Souheyla BOUDJEMA, Noureddine BOUZID, Mokhetar SAIDI,
Abdecharif BOUMAZA (ALGERIA)
“Effect of Potassium Dichromate on the Corrosion Inhibition of N80 Steel In Albien Water”
P9 Rabeh SLIMANI, Mohammed el Amin BOUKHORS, A. MERIAH (ALGERIA)
“Effects of Weak Magnetic Field on the Corrosion Behavior of Aluminum 6060”
P10 Rabeh SLIMANI, Mohammed el Amin BOUKHORS, A. MERIAH (ALGERIA)
“Influence of Seawater on the Corrosion of Aluminum AL/XLPE 0,6/1KV Wire”
P11 Nurettin Mete KALELİ, Mesutcan ŞAHİN, Kaan Cebesoy EMREGÜL (TURKEY)
“Asidik Ortam Korozyon İnhibitörü Olarak İki Yeni Schiff Bazı; Deneysel ve Teorik
Değerlendirme”
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | XV
BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
27.09.2018 Thursday / 09:00 – 12:00
P12 Süleyman KERLİ, Şükrü ÖZĞAN, Serhan URUŞ, Hasan ESKALEN, Ali Kemal SOĞUKSU
(TURKEY)
“Vanadium Oxide-Carbon Dots Nano Particle Methyl Blue Degragation”
P13
Yasmina ELAOUFIR, Y. KERROUM, Siham SKAL, Hassane LGAZ, Abdellah GUENBOUR
(MOROCCO)
“Electrochemical and Theoretical Studies on Inhibition of Carbon Steel Corrosion by Novel
Derived Thiazole”
P14 Sibel ZOR, Nargiz ILMIEVA (TURKEY)
“Synthesis and Characterization of PANi/EPOXY/METAL Oxide Nanocomposite Using TiO2
and ZnO Nanoparticles, Investigation of Its Corrosion Protection Behavior on L304 Steel”
P15 Emre Deniz YALÇIN, Aykut ÇANAKÇI, Fatih ERDEMİR (TURKEY)
“ZA27/Grafen/B4C Hibrit Nanokompozitlerin Korozyon Özellikleri”
P16 Emre Deniz YALÇIN, Aykut ÇANAKÇI, Fatih ERDEMİR (TURKEY)
“Toz Metalurjisi Tekniği ile Üretilen ZA27/B4C Nanokompozitlerin Korozyon Davranışlarının
İncelenmesi”
P17 Asmae BERRISSOUL, Ali DAFALI, Karima CHERRAK, Abderrahmane ROMANE (MOROCCO)
“Origanum Compactum Aqueous Extract As Ecofriendly Corrosion Inhibitor for Mild Steel
in 1M HCl”
P18 Fatih TEZCAN, Gurbet YERLİKAYA, Asad MAHMOOD, Gülfeza KARDAŞ (TURKEY)
“Electrochemical Studies of 4-((4-Bromobenzylidene)Amino) Benzamide (4-BAB) as an
Efficient Corrosion Inhibitor for Mild Steel in 1.0 M HCl”
P19 Süleyman KERLİ, Handan Özlü TORUN, Ümit ALVER, Ömer SÖĞÜT, Hasan ESKALEN, Ali
Kemal SOĞUKSU (TURKEY)
“Co3O4-In2O3 İnce Filmlerinin Hazırlanması ve Süperkapasitör Özelliklerinin İncelenmesi”
P20
Süleyman KERLİ, Handan Özlü TORUN, Ümit Alver, Hasan Eskalen, Ali Kemal SOĞUKSU
(TURKEY)
“Hidrotermal Yöntem ile Metal Oksit Nano Yapılı Parçacıkların Üretilmesi ve Fotokatalitik
Özelliklerinin İncelenmesi”
P21 Mehmet YILDIRIM, Rıdvan ÖZSOY, Mustafa KOCABAŞ (TURKEY) “İkincil Yaşlandırmanın AlSi10Mg Döküm Alaşımlarının Korozyon Özelliklerine Etkisi”
P22 Evrim BARAN, Zeynep BAZ, Ramazan ESEN, Birgül YAZICI (TURKEY)
“Corrosion Behaviour of DLC Film Deposited on TiO2-NT by MW ECR in a Simulated Body
Fluid Solution”
P23
Siham SKAL, Younes KERROUM, Yasmina El AOUFIR, Abdellah GUENBOUR, Abdelkbir
BELLAOUCHOU, Hassane IDRISSI (MOROCCO)
“Role of Ecological Inhibitor on Abrasion Corrosion of Stainless Steel in Polluted
Phosphoric Acid”
P24 Fatih ERDEMİR, Aykut ÇANAKÇI, Emre Deniz YALÇIN (TURKEY)
“Review of New Development in the Study of Corrosion Assessment of Metal and Alloys in
Various Environment by Using Response Surface Method”
P25 Fatima ERMAN BAĞCI, Hüsnü GERENGİ, Ertuğrul KAYA (TURKEY)
“Etilen Glikolün %3,5 NaCl Ortamında St37 Çeliğinin Korozyon Mekanizmasına Etkisinin
Araştırılması”
P26
Ramazan SOLMAZ, Ece ALTUNBAŞ ŞAHİN, İbrahim Halil GEÇİBESLER, Gülfeza KARDAŞ
(TURKEY)
“Cucurbita Maschole (Balkabağı) Kabuğunun Yumuşak Çeliğin Korozyonuna İnhibisyon
Etkisinin İncelenmesi”
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | XVI
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27.09.2018 Thursday / 13:30 – 16:30
P27
Mohy Eddine KHADIRI, Mesbah ELYAAGOUBI, Rachid IDOUHLI, Yassine KOUMYA,
Abdesselam ABOUELFIDA, Othmane ZAKIR, Abdelaziz BENYAICH, Abdelkader
OUTZOURHIT (MOROCCO)
“Passive Film Obtained by Anodization on Ti-Cu (2%) Alloy in Phosphoric Acid”
P28 Aicha ZIOUCHE, Ahmed HADDAD (ALGERIA)
“Enhancement of Corrosion Protection of Aluminum Alloy and Magnesium Alloy by a Sol-
Gel Coating”
P29 Süleyman YALÇINKAYA, Didem ÇAKMAK (TURKEY)
“Paslanmaz Çeliğe Kaplanmış Poli(Pirol-ko-o-Anisidin)Kitosan Kompozit Filminin Korozyon
Performansının Belirlenmesi”
P30
Fatima Zahrae ZOUHAIR, Hassan LGAZ, Houda SERRAR, Rachid SALGHI, Azzouz ESSAMRI
(MOROCCO)
“The Valorization of a Polymeric Membrane Used in Pervaporation Process as Corrosion
Inhibitor of Carbon Steel in Acid Medium”
P31
A. Cem BAŞKARACA, A. Yücel SÖNMEZ, E. Deniz UZ, Can ASLAN, Burçak AVCI, Mustafa
ÜRGEN (TURKEY)
“A Novel Method of Improved Corrosion Resistance for Steel: Artificial Superhydrophobic
Surfaces Produced by Nickel Electroplating, Anodic Oxidation and Stearic Acid Treatment”
P32
Ali Tuncay ÖZYILMAZ, İbrahim FİLAZİ, Ersen GÖKTÜRK, Yusuf REYHANOĞLU, Çağla
SÜRMELİOĞLU (TURKEY)
“Investigation of Corrosion Resistance of Polypyrrole Film Synthesized with Limonene
Additive on AISI 316L Steel”
P33 İpek ÖZTÜRK, Sebahat TOPAL, Turan ÖZTÜRK, Esma SEZER (TURKEY) “Corrosion Inhibition of Mild Steel with Green Inhibitors in Cooling Water Systems”
P34 Siham SKAL, Manassé Nihorimbere, Abdellah GUENBOUR, Abdelkbir BELLAOUCHOU,
Mohamed Halim, Mohamed Tabyaoui (MOROCCO)
“The Chloride Effect on the Behavior of Brass in Artificial Drinking Water”
P35 Deniz Özge ÇOLAK, Erhan KARACA, Merve UĞUR, Kadir PEKMEZ, Nuran ÖZÇİÇEK PEKMEZ (TURKEY)
“Corrosion Inhibition of Brass Alloy in NaCl and HCl Solutions by Bis-Benzimidazole”
P36
Gizem Gümüşgöz ÇELİK, Mehmet Burak KOCA, Selahattin SERİN, Birgül YAZICI, Gülfeza
KARDAŞ (TURKEY)
“Investigation of the Inhibitive Effect of Water-soluble Schiff Base on Mild Steel in 1 M
HCl”
P37 Handan ÖZLÜ TORUN, Vedat TAŞDEMİR, Süleyman KERLİ (TURKEY)
“Yakıt Pillerinde Kullanılan Ara Bağlantılar”
P38 Ayşe ERKAN, Ümmihan T. YILMAZ, Gökhan SAĞLAM, Şerife HELVACIOGLU (TURKEY)
“Krank Millerine Uygulanacak Östemperleme Isıl İşlemi Prosesinin Geliştirilmesi”
P39 Fatima Zahra HAFIANE, Latifa TAHRI, Karim ARIFI, Hind ELBOUZAIDI, Rajaa ROCHDI,
Mohammed FEKHAOUI (MOROCCO)
“Biocorrosion-Biofilms Action on Water Wells in Irrigated Zone (Middle Atlas-Morocco)”
P40 Abdurrahman AKDAĞ, Ali Tuncay ÖZYILMAZ (TURKEY)
“Corrosion Behaviour of Poly(N-Methylaniline) Film on ZnNi Plated Carbon Steel”
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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28.09.2018 Friday / 09:00 – 12:00
P41
Latifa TAHRI, Fatima Zahra HAFIANE, Abdellah ELABIDI, Amal SAIDI, Ilham NASSRI,
Mohammed FEKHAOUI (MOROCCO)
“Bacterial Contribution to Corrosion: C. Perfringens Case in Water Wells in Irrigated Zone
(Middle Atlas-Morocco)”
P42 Esin Ateş GÜVEL, Nilgün KIZILCAN, Belkıs USTAMEHMETOĞLU, Esma SEZER (TURKEY)
“Pirol ve Tiyofen Sonlu Siklohekzanon Formaldehit Reçinesi Kopolimerlerinin Çeliğin
Korozyonunu Önlemedeki Etkileri”
P43
Ihssane OUASSOR, Larbi EDDAIF, Aimad MAZKOUR, Abdul SHABAN, Souad El HAJJAJI
(MOROCCO)
“Surface Protection of C38 Steel Using a Natural Anticorrosive Product: Prickly Pear
Cladode’s Juice”
P44 Esin Ateş GÜVEL, Nilgün KIZILCAN, Belkıs USTAMEHMETOĞLU, Esma SEZER (TURKEY)
“Polipirolün NaCl ve H2SO4 Ortamında Çeliğin Korozyonunu Önlemedeki Etkilerinin
Karşılaştırmalı İncelenmesi”
P45
Mustafa YAZICI, Onur ÇOMAKLI, Tuba YETİM, Halim KOVACI, A. Fatih YETİM, Ayhan
ÇELİK (TURKEY)
“Influence of Al Amount on Corrosion Behaviour of Al-doped ZrO2 Oxide Films Prepared by
SILAR Processes”
P46 Zouhair LAKBAIBI, Siham ECHIHI, Mohamed TABYAOUI (MOROCCO)
“Adsorption of the 5,6-Dichloro-2-Methyl-1H-Benzimidazole, Nifedipine and Naphthalene-
2,6-Dicarboxylic Acid on the Iron Surface: DFT Investigation”
P47 Abdellah LAQHAILI, Maria BOUDALIA, Siham ECHIHI (MOROCCO)
“Eco-Frienedly Green Inhibitor Thyme Vulgaris for the Corrosion Control Of Mild Steel in
Phosphoric Acid Medium”
P48 Yusuf NUR, Gizem E. BAYOL (TURKEY)
“The Synthesis of Silicon Carbide Film on Alumina Ceramics”
P49 Celal KURŞUN, Musa GÖGEBAKAN, Hasan ESKALEN, Serhan URUŞ (TURKEY)
“Highly Efficient Photocatalytic Degradation of Methyl Blue Without Using Any Oxidant
With Mg-Based Alloys”
P50 Burak KARAHİSAR, Mustafa Özgür ÖTEYAKA (TURKEY)
“Yaşlandırma Süresi ve Derin Kriyojenik Isıl İşlemin AM60 Magnezyum Alaşımının
Korozyon Davranışına Etkisi”
P51
H. SERRAR, M. QUAKKI, M. GALAI, H. LGAZ, F. BENHIBA, Z. BENZEKRI, S. BOUKHRIS, A.
HASSIKOU, A. SOUIZI, M. EBN TOUHAMI (MOROCCO)
“Comparative Study of the Inhibition Effect of Three Pyridotriazine Derivatives on the
Corrosion of Copper in 2.0 M HNO3 Solution: Experimental and Quantum Chemical
Studies”
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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CONTENTS
Page
Preface I
Scientific Committee II
Organization Committee V
Symposium Programs VI
Table of Contents XVIII
ID Page
S1 Abed SNEINEH
“Solid State Reference Electrode & Industrial Best Practices” 1
S4 Cem ÖRNEK, Christofer LEYGRAF, Jinshan PAN
“Towards Understanding Atmospheric and Aqueous Localised Corrosion of AA6063-T5
Aluminium Alloy – A Comprehensive Study Using Time-Lapse SKPFM, In-Situ AFM
and Conventional Electrochemistry” 2
S5 Cem ÖRNEK, Marie LÅNGBERG, Jonas EVERTSSON, Gary HARLOW, Weronica LİNPÉ,
Eleonora BETTİNİ, Lisa RULLIK, Francesco CARLÀ, Roberto FELICI, Ulf KIVISÄKK,
Edvin LUNDGREN, Jinshan PAN
“Passivity Break down on Duplex Stainless Steel Investigated by In-situ Synchrotron
Surface X-ray Analyses” 4
S6 Mehmet Burak KOCA, Rasiha Nefise MUTLU, Gülfeza KARDAŞ, Birgül YAZICI
“ZAMAK-2 Alloy Prepared by Powder Metallurgy and Investigation of Corrosion
Behavior in 3.5% NaCl” 5
S8 Ahmet ÇAKIR
“Nano Yapılı İmplant Yüzeylerinin Korozyon Davranışları” 6
S9 Efe Çetin YILMAZ
“Investigation of Attrition-Corrosion Behaviour of Nano-Filed Dental Composite
Materials” 7
S10 Efe Çetin YILMAZ
“Effect of Thermal Cycling on Contact-Wear Behaviour of Composite Materials in
Chemical Corrosion Environment” 8
S11 Şengül DANIŞMAN, Tuba DEMİREL
“Investigation of the Corrosion Behaviours of DLC Coatings Produced by PVD
Technique” 9
S13 Güray KILINÇÇEKER, Kayhan KARATEKE, Atilla ÇEKİÇ, Mustafa Kemal SANGÜN
“Yumuşak Çeliğin Klorürlü Çözeltilerdeki Korozyon Davranışlarına Kantaron’un
(Hypericum Perforatum L.) Etkisi” 10
S14 Güray KILINÇÇEKER, Mahmut BAŞ, Ahmet Murat GİZİR, Mustafa Kemal SANGÜN
“Mesalazinden Sentezlenen Schiff Bazının Hidroklorik Asit İçeren Ortamda Bakırın
Korozyonuna İnhibitör Olarak Etkisi” 11
S15 Başak DOĞRU MERT, Mehmet Erman MERT, Gülfeza KARDAŞ, Birgül YAZICI
“Role of Amoklavin on Corrosion Inhibition of Mild Steel in 0.5 M HCl” 12
S16 Şennur CANDAN, Serdar ÇİM, Seren EMİR, Ercan CANDAN
“AZ91 Mg Alaşımlarında Fe Tolerans Limit Değerlerinin Araştırılması” 13
S17 Şennur CANDAN, Serdar ÇİM, Seren EMİR, Ercan CANDAN
“AZ91 Mg Alaşımının Korozyonunda Fe’nin Zararlı Etkisinin Azaltılmasında Yeni Bir
Yaklaşım” 15
S18 Fatiha CHELGHAM, Souheyla BOUDJEMA, Noureddine BOUZID, Mokhetar SAIDI,
Abdecharif BOUMAZA
“Influence of Temperature on Microstructure and Corrosion Rate of API N80 Carbon
Steel” 17
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September 26–28, 2018, Hatay Mustafa Kemal University
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S19 Basady GASSAMA, Mustafa Özgür ÖTEYAKA
“Corrosion Performance of Cryogenic Treated AZ91 Magnesium Alloys in The
Simulated Human Body Fluid” 18
S20 Fevzi KELEN, Tarık AYDOĞMUŞ, Mehmet GAVGALI, Burak DİKİCİ
“Mg/NiTi Metal Matrisli Kompozitlerin Korozyon Duyarlılıkları” 19
S21 Fevzi KELEN, Tarık AYDOĞMUŞ, Mehmet GAVGALI, Burak DİKİCİ
“TiNi ile Takviye Edilmiş AZ91D Matrisli Kompozitlerin Korozyon Davranışı” 20
S22 Pınar PARLAKYİĞİT, Hakan YAYKAŞLI
“The Effects of Corrosion on Yarn Quality That Arised on Drums at Ring Spinning
Machines” 21
S23 Gözde TANSUĞ
“%3 NaCl Çözeltisinde 304 Çeliğinin Çukurcuk Korozyonuna Karşı 3-Amino-5-
Metiltiyo-1H-1,2,4-Triazol ve Sodyum Molibdatın İnhibisyon Etkisi” 22
S24 Ebru Emine ŞÜKÜROĞLU, Süleyman ŞÜKÜROĞLU, Yaşar TOTİK, İhsan EFEOĞLU,
Ayşenur ARMAĞAN
“Titanyum Biyomalzemelerin Tribokorozyon Özelliklerinin Araştırılması” 23
S25 Ebru Emine ŞÜKÜROĞLU, Süleyman ŞÜKÜROĞLU, Yaşar TOTİK, İhsan Efeoğlu,
Ayşenur ARMAĞAN
“Titanyum Alaşımlarının DLC Kaplama Sonrası Tribokorozyon Özelliklerinin
İncelenmesi” 24
S26 Simge ARKAN, Nurhan CANSEVER, Esra İLHAN SUNGUR
“630 Kalite Paslanmaz Çeliğin Antiadhesiv Özelliklerine Yüzey Morfolojisinin Etkisi” 25
S27 Duygu ARSLAN, Nurhan Cansever, Esra ILHAN SUNGUR
“Microbiologically Induced Corrosion Behavior of N-80 Steel by Gravimetric Method” 27
S28 Serap Toprak DÖŞLÜ
“2,4-Diamino-6-Phenyl-1,3,5 Triazine as Efficient Corrosion Inhibitor for Mild Steel in
HCl Solution” 28
S29 Serap Toprak DÖŞLÜ, Reşit YILDIZ, İlyas DEHRİ
Electrochemical Behaviour of Poly(Indole-co-Methyl Acrylate) Coated on Stainless
Steel 29
S30 Reşit YILDIZ, Serap Toprak DÖŞLÜ, İlyas DEHRİ
The Use of Sulfanilamide as Corrosion Inhibitor for Mild Steel Protection 30
S31 Reşit YILDIZ, Başak DOĞRU MERT, İlyas DEHRİ, Birgül YAZICI
“Adsorption and Inhibition Behavior of 4,6-Diamino-2-Hydroxy-1,3,5-Triazine on Mild
Steel” 31
S32 Hadaan PEHLİVAN, Mahmut AYTEKİN
“Yumuşak Betonarme Çeliğinin Beton Boşluk Suyu ve NaCl Çözeltisi İçerisinde
Korozyon Davranışının İncelenmesi” 32
S33 Mustafa KOÇER, Murat ÖZTÜRK, Ahmet Arif BOĞA
“Analytical Study on the Effect of Corrosion to the Construction Performance” 33
S34 Recep ÇATAR, Murat ÇOLAK
“Tane İnceltici (TİB) Ve Modifiye Edici (Sr) İlavesinin Etial 177 Alüminyum Döküm
Alaşımının Korozyon Direncine Etkisinin İncelenmesi” 34
S35 Younes KERROUM, Abdallah GUENBOUR, Abdelkbir BELLAOUCHOU, Mohamed
TABYAOUI “Surface Corrosion of Austenitic Stainless Steel in the Contaminated Phosphoric Acid” 35
S36 Nuri SEN, Husnu GERENGİ, Ilyas UYGUR, Ertugrul KAYA
“Corrosion Behavior of Dual-Phase 600 and 800 Steels in %3.5 NaCl Environment” 36
S37 Haşim Fırat KARASU, Mine DEMİRSOY
“Farklı Halat Tiplerinin Korozyon Hızlarının Tafel Ekstrapolasyon Yöntemi ile Deneysel
Olarak Elde Edilmesi” 37
S38 Polen YILMAZ, Esra ILHAN SUNGUR, Nurhan CANSEVER
“Microbially Induced Corrosion by Manganese Oxidizing Bacteria” 38
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September 26–28, 2018, Hatay Mustafa Kemal University
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S39 Douâae OU-YAHIA, Nurhan Cansever, Saad IBNSOUDA KORAICHI, Esra ILHAN
SUNGUR
“Marine Microbiologically Influenced Corrosion (MMIC): An Overview” 39
S40 Yusuf KAYGISIZ, Didem BALUN KAYAN
“Growth Rate and Heat Treatment Effect on the Corrosion Behavior of a Directionally
Solidified Al-13wt.% Mg2Si Pseudo Eutectic Alloy” 40
S41 Rachid IDOUHLI, Yassine KOUMYA, Mohy Eddine KHADIRI, Abdelaaziz AITYOUB,
Abdessalam ABOUELFIDA, Abdelaziz BENYAICH
“Experimental and Theoretical Studies of Cuminaldehyde as Green Corrosion
Inhibitors for S300 Steel” 41
S42 Asmae BERRISSOUL, Ali DAFALI, Karima CHERRAK, Abderrahmane ROMANE
“A Comparative Study on the Corrosion Behavior of Mild Steel and Aluminum Alloy in
Acidic Medium Using Green Corrosion Inhibitor” 42
S44 Levent ORGAN, Öykü G. ZALOĞLU, Berk Gazioğlu
“Susceptibility of Aluminum Alloys Produced by Different Casting Techniques to
Localized Corrosion Studied by Electrochemical Noise Measurements” 43
S45 Furkan KALAN, Fadime AKPINAR, Taha Çağrı ŞENOCAK, Kadri Vefa EZİRMİK
“Sıcak Daldırma Yöntemi ile Alüminyum Kaplanmış Yapı Çeliklerinin Korozyon
Özelliklerinin İncelenmesi” 44
S47 Gurbet YERLİKAYA, Abrar AHMAD, Murat FARSAK, Gülfeza KARDAŞ
“Effect Of Thiadiazole Derivative Inhibitor On Acid Corrosion Of Mild Steel” 45
S48 Hadaan PEHLİVAN, Mahmut AYTEKİN
“Sepiyolit Katkılı Çimento Harç Numunelerinin NaCl Çözeltisi İçerisinde Korozyon
Davranışının Polarizasyon Direnci Yöntemi ile İncelenmesi” 46
S49 Ramazan SOLMAZ
“NiPd Elektrokatalizörlerin Elektroliz Koşullarındaki Korozyon Davranışları” 47
S50 Ramazan SOLMAZ
“Metal Çöktürülmüş Kendi Kendine Biriken Tek Tabakalı Metil Rodanin Filmler:
Korozyon İnhibisyon Uygulamaları” 48
S51 Sevgi ATEŞ, Evrim BARAN, Birgül YAZICI
“Corrosion Behavior of SnO2-Coated Mild Steel in Hydrochloric Acid Solution” 49
S52 Nihat Erdem BERBER, Necati ATABERK, Mürsel EKREM, Ahmet Avcı
“Korozif Ortamın Nano Elyaf Katkılı Epoksi ile Yapıştırılmış Bindirme Bağlantılarında
Eksenel Darbe Davranışlarına Etkisi” 50
S53 Elvan ARAZ, Erkan KARAYİĞİT
“Yüksek Karbonlu Çelik Telin Soğuk Deformasyonu Sırasında Çinko Fosfat Kaplama
İşlemine Alternatif Yeni Nesil Kaplama Yöntemi” 51
S54 Güray KILINÇÇEKER, Sema ÇELİK, Mustafa Kemal SANGÜN
“The Inhibition Effects of Phenol Red on Corrosion Behaviour of Copper in Chloride
Solution” 52
S55 Güray KILINÇÇEKER, Nida YEŞİLYURT, Mustafa Kemal SANGÜN
“The Effects of Polycarboxylate Based Super Plasticizer on Corrosion Resistance of
Steel Reinforcement In Concrete” 53
S56 Buket BOZKURT, Sibel ZOR
“PANI/NiO ve PANI/TiO2 Kompozitlerin Elektrokimyasal Olarak L304 Çelik Yüzeyine
Kaplanması ve Korozyon Davranışlarının İncelenmesi” 54
S57 Sibel ZOR, Nargiz ILMIEVA
“Corrosion Behavior of PANi/EPOXY/NANO SnO2 Polymeric Nanocomposite Coated
Stainless Steel İn 3.5 % NaCl 55
S58 Mustafa KOCABAŞ, Nurhan CANSEVER
“Anodize Alüminyum Yüzeylerdeki Bor Nitrür Takviyeli Akımsız Nikel Kaplamanın
Özelliklerine Isıl İşlemin Etkisi” 56
S61 Demet ÖZKIR
“An Electrochemical Study Examining the Effect of a Newly Synthesized Aromatic
Type of a Schiff Base on the Behaviour of the Temperature of Mild Steel in HCl
Solution” 57
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S62 Ayşe ONGUN YÜCE
“5-Phenyl-1H-1,2,4-Triazole-3-Thiol’ in (5-PTT) Asidik Ortamda Yumuşak Çeliğin
Korozyonuna İnhibisyon Etkisinin Teorik Olarak Araştırılması” 58
S63 Gökhan GECE, Semra BİLGİÇ
“Disentangling The Relationship Between Inhibition Effect and Structure of Two
Drugs: A Theoretical Study” 59
S65 Hüsnü GERENGİ, Ertuğrul KAYA, Fatima ERMAN BAĞCI
“Etilen Glikolün Korozyon İnhibitörü Olarak %3.5 NaCl Ortamında AA7075 Alaşımı
İçin Kullanılabilme Potansiyelinin Araştırılması” 60
S66 Mesut YILDIZ, Ayhan YILDIRIM, Serkan ÖZTÜRK, Hana LAHBIB, Kadir GÖKŞEN,
Gözen BEREKET, Hüsnü GERENGİ
“St37 Çeliğinin 1 M HCl Ortamındaki Korozyon Mekanizmasına İyonik Olmayan Yüzey
Aktif Maddenin Etkisinin Araştırılması” 62
S67 Serkan ÖZTÜRK, Ayhan YILDIRIM
“Semi-Crown Ether Linked Symmetric Cationic Gemini Surfactants, Synthesis and
Their Corrosion Inhibition Effects on Carbon Steel in 1 M HCl Solution” 64
S69 Yassine KOUMYA, Rachid IDOUHLI, Mohyeddine KHADIRI, Abdelaaziz Ait YOUB,
Abdesselam ABOUELFIDA, Abdelaziz BENYAICH
“Mott Schottky Analysis and Chronoamperometric Measurements for the Passivation
of the AISI 321 Stainless Steel” 65
S71 Rasiha Nefise MUTLU, Mehmet Burak KOCA, Gülfeza KARDAŞ, Birgül YAZICI
“Fabrication and Characterization of the Ni-based Superalloy, Investigation of Hot
Corrosion Behaviour” 66
S72 Gül ÖZYILMAZ, Çağla Sürmelioğlu, İbrahim FİLAZİ, Ali Tuncay ÖZYILMAZ
“ZnNiMo Alaşım Kaplı Bakır Yüzeyinde Polipirol Film Sentezi için Yanıt Yüzey
Yönteminin Uygulaması” 67
S73 Ali Tuncay ÖZYILMAZ, Çağla Sürmelioğlu, İbrahim FİLAZİ, Cumali ÇELİK
“Organik Madde Varlığında Sentezlenen Poli(N-Etil Anilin) Kaplamanın Korozyon
Performansı” 69
S74 Mustafa KAPTANOĞLU
“Effect of Welding Current on Wear and Hardness Properties of Coatings” 71
S75 Mustafa KAPTANOĞLU
“Welding Current Effect on Chemical Compositon and Microstructure of Coatings” 72
S76 Duygu KADAIFCILER, Duygu ARSLAN, Nurhan CANSEVER, Esra ILHAN-SUNGUR
“Influences of Glucose and Starch on Corrosion Behavior of Galvanized Steel” 73
S77 Gökmen SIĞIRCIK
“Inhibitor Effect of 1-Benzyl-3-Methylimidazolium Tetrafluoroborate on Mild Steel” 74
S80 Tuğba Gürmen ÖZÇELİK, Canan URAZ
“Investigation of the Operating Conditions on Electroless Nickel Plating Over ABS
Plastic” 75
S81 Canan URAZ, Tuğba Gürmen ÖZÇELİK
“Electroless Metal Plating Over ABS Plastic” 76
S82 Seda GUNESDOGDU SAGDİNC, Sibel ZOR
“Corrosion Inhibition Efficiency and Theoretical Studies of Benzamide and
Thioacetamide” 77
S84 Fatma KAYA, Ibrahim Halil GECİBESLER, Ramazan SOLMAZ
“Corrosion Inhibition of Mild Steel in 1M HCI Solution by Rheum Ribes L. (Işgın)
Flower Extracts” 78
S85 Ali GÜNEN, Erdoğan KANCA, Mehmet DEMİR
“Farklı Difüzyonel Kaplamaların Nitrik Asit Çözeltisi İçerisindeki Korozyon
Davranışları” 79
S86 Ali GÜNEN, Zeki AYDIN, İsmail Hakkı KARAHAN
“Borlama, Titanyumlama ve Vanadyumlama Uygulanmış AISI 1060 Çeliğinin Sülfürik
Asit Çözeltisi İçerisindeki Korozyon” 80
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S87 Ali GÜNEN, Erdoğan KANCA, Vedat YEĞİN
“Farklı Difüzyonel Kaplamalar Uygulanmış AISI 1060 Çeliğinin Hidroflorik Asit
Çözeltisi İçerisindeki Korozyon Davranışlarının İncelenmesi” 81
S88 Ali TOZAR, İsmail Hakkı KARAHAN
“Ti6Al4V Biyomedikal İmplantlar Üzerine Elektroforetik Olarak Depolanan HA / CTS
Biyokompozit Kaplamaların Korozyon Direncinin İncelenmesi” 82
S89 Burçak AVCI, Dilan ER, Mustafa ÜRGEN
“Galvanic Coupling Behavior Between Titanium Based Nitride Coatings and Steel” 83
S90 Fadime AKPINAR, Furkan KALAN, Taha Çağrı ŞENOCAK, Burak DİKİCİ, Kadri Vefa
EZİRMİK
“Eloksal İşlemi Uygulanan Alüminyum Alaşımlarının Asidik ve Alkali Ortamlarda
Korozyon Özelliklerinin İncelenmesi” 84
S91 Kağan YURDAL, İsmail Hakkı KARAHAN
“Effect of Current Density on Materials and Corrosion Properties of Films Pulse
Electrodeposited from Pyrophosphate Solutions Containing Cu and Zn Ions” 85
S94 Ece Altunbaş ŞAHİN, Ramazan SOLMAZ, İbrahim Halil GEÇİBESLER, Gülfeza KARDAŞ
“Phoenix Dactylifera Çekirdeğinin (Hurma Çekirdeği) Asidik Ortamda Korozyon
İnhibitörü Olarak Değerlendirilmesi” 86
S95 Ali Tuncay ÖZYILMAZ, Veysel Soydal ATASEVEN, Alpay DEMİRAL, Çağla
SÜRMELİOĞLU
“The Corrosive Effect of Iodine Solution in Different Concentrations Used For
Disinfection of Surgical Instruments” 87
S96 Recep ARICI
“Robotik Tandem Gazaltı Ark Kaynağında Kaynak İlerleme Hız Değişiminin Mekanik
ve Korozyon Davranışlarına Olan Etkisinin İncelenmesi” 88
S97 Zahra AKOUNACH, Mohammed BENMESSAOUD, Ahmed Al MOFARI, Souad El HAJJAJI
“Inhibition of the Corrosion of Aluminum in 1M HCl Solution by Two Extract of Plants” 89
S100 Ali Tuncay ÖZYILMAZ, İbrahim FİLAZİ, A. Ebru AYDIN, Çağla SÜRMELİOĞLU, Gül
ÖZYILMAZ
“Investigation of the Effect of Additive and Electrolyte Concentrations on Corrosion
and Electrical Resistance of Polypyrrole Coating by Statistical Experimental Design
Techniques” 90
S101 Ali Tuncay ÖZYILMAZ, İbrahim FİLAZİ, Çağla SÜRMELİOĞLU, Gül ÖZYILMAZ
“Investigation of Corrosion Performance of Poly(o-Anisidine) Films Synthesized on
ZnNi and ZnNiMo Coated Copper Surface” 92
S102 Elif Sena KIRMIZIYAKA, İnci ÇINAR
“Corrosive Effect in Food Industry (Gıda Endüstrisinde Korozyonun Etkisi)” 94
S103 Ayşe Nur ACAR, Rasiha Nefise MUTLU, Abdul Kadir EKŞİ, Ahmet EKİCİBİL, Birgül
YAZICI
“Corrosion Properties of Austenitic and Martensitic Stainless Steels Produced by
Powder Metallurgy Method” 95
S104 İrem Cemre TÜRÜ, Seda Aysel TEPE, Ahmet YAYLI, Nurhan CANSEVER,
“Electrochemical Behavior of Ti6Al4V Alloy in Salt Water and Simulated Body Fluid” 97
S105 Emine Feyza ŞÜKÜR, Halil Burak KAYBAL, Hasan ULUS, Ahmet AVCI
“Asidik Ortamın Bor Nitrür (BN) Nano Takviyeli Epoksi Kompozit Malzemenin Aşınma
Davranışına Etkisinin İncelenmesi” 98
S106 Emine Feyza ŞÜKÜR, Gürol ÖNAL, Ahmet AVCI
“Korozif Ortamın Bazalt Elyaf Takviyeli Epoksi Kompozitlerin Tribolojik Özellikleri
Üzerine Etkisi” 99
S107 Recep ÇATAR, Hikmet ALTUN
“Investigation of The Corrosion Properties of Anodized AZ31 Magnesium Alloys” 100
P2 Okay ÖZÜPEK, Ömer Faruk ÖZKAN, Mümin ÇITAK
“Çinko Kaplı Çelik Tellerin Kromatlama İşlemi İle Korozyon Dayanımının Arttırılması” 101
P4 Burak AY, Başak DOĞRU MERT, Emel YILDIZ, Birgül YAZICI
“The Inhibition of 2,6-Pyridinedicarboxylic Acid on Mild Steel: Experimental and
Computational Investigations” 102
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P5 Aysel BÜYÜKSAĞİŞ, Meltem DİLEK
“The Use of Papaver Somniferum L. Plant Extract as Corrosion Inhibitor” 103
P8 Fatiha CHELGHAM, Souheyla BOUDJEMA, Noureddine BOUZID, Mokhetar SAIDI,
Abdecharif BOUMAZA
“Effect of Potassium Dichromate on the Corrosion Inhibition of N80 Steel In Albien
Water” 104
P11 Nurettin Mete KALELİ, Mesutcan ŞAHİN, Kaan Cebesoy EMREGÜL
“Asidik Ortam Korozyon İnhibitörü Olarak İki Yeni Schiff Bazı; Deneysel ve Teorik
Değerlendirme” 105
P13 Yasmina ELAOUFIR, Y. KERROUM, Siham SKAL, Hassane LGAZ, Abdellah GUENBOUR
“Electrochemical and Theoretical Studies on Inhibition of Carbon Steel Corrosion by
Novel Derived Thiazole” 106
P14 Sibel ZOR, Nargiz ILMIEVA
“Synthesis and Characterization of PANi/EPOXY/METAL Oxide Nanocomposite Using
TiO2 and ZnO Nanoparticles, Investigation of Its Corrosion Protection Behavior on
L304 Steel” 108
P18 Fatih TEZCAN, Gurbet YERLİKAYA, Asad MAHMOOD, Gülfeza KARDAŞ
“Electrochemical Studies of 4-((4-Bromobenzylidene)Amino) Benzamide (4-BAB) as
an Efficient Corrosion Inhibitor for Mild Steel in 1.0 M HCl” 109
P22 Evrim BARAN, Zeynep BAZ, Ramazan ESEN, Birgül YAZICI
“Corrosion Behaviour of DLC Film Deposited on TiO2-NT by MW ECR in a Simulated
Body Fluid Solution” 111
P23 Siham SKAL, Younes KERROUM, Yasmina El AOUFIR, Abdellah GUENBOUR, Abdelkbir
BELLAOUCHOU, Hassane IDRISSI
“Role of Ecological Inhibitor on Abrasion Corrosion of Stainless Steel in Polluted
Phosphoric Acid” 112
P25 Fatima ERMAN BAĞCI, Hüsnü GERENGİ, Ertuğrul KAYA
“Etilen Glikolün %3,5 NaCl Ortamında St37 Çeliğinin Korozyon Mekanizmasına
Etkisinin Araştırılması” 113
P26 Ramazan SOLMAZ, Ece ALTUNBAŞ ŞAHİN, İbrahim Halil GEÇİBESLER, Gülfeza
KARDAŞ
“Cucurbita Maschole (Balkabağı) Kabuğunun Yumuşak Çeliğin Korozyonuna
İnhibisyon Etkisinin İncelenmesi” 115
P27 Mohy Eddine KHADIRI, Mesbah ELYAAGOUBI, Rachid IDOUHLI, Yassine KOUMYA,
Abdesselam ABOUELFIDA, Othmane ZAKIR, Abdelaziz BENYAICH, Abdelkader
OUTZOURHIT
“Passive Film Obtained by Anodization on Ti-Cu (2%) Alloy in Phosphoric Acid” 116
P29 Süleyman YALÇINKAYA, Didem ÇAKMAK
“Paslanmaz Çeliğe Kaplanmış Poli(Pirol-ko-o-Anisidin)Kitosan Kompozit Filminin
Korozyon Performansının Belirlenmesi” 117
P31 A. Cem BAŞKARACA, A. Yücel SÖNMEZ, E. Deniz UZ, Can ASLAN, Burçak AVCI,
Mustafa ÜRGEN
“A Novel Method of Improved Corrosion Resistance for Steel: Artificial
Superhydrophobic Surfaces Produced by Nickel Electroplating, Anodic Oxidation and
Stearic Acid Treatment” 118
P32 Ali Tuncay ÖZYILMAZ, İbrahim FİLAZİ, Ersen GÖKTÜRK, Yusuf REYHANOĞLU, Çağla
SÜRMELİOĞLU
“Investigation of Corrosion Resistance of Polypyrrole Film Synthesized with Limonene
Additive on AISI 316L Steel” 119
P33 İpek ÖZTÜRK, Sebahat TOPAL, Turan ÖZTÜRK, Esma SEZER
“Corrosion Inhibition of Mild Steel with Green Inhibitors in Cooling Water Systems 121
P34 Siham SKAL, Manassé Nihorimbere, Abdellah GUENBOUR, Abdelkbir BELLAOUCHOU,
Mohamed Halim, Mohamed Tabyaoui
“The Chloride Effect on the Behavior of Brass in Artificial Drinking Water” 123
P35 Deniz Özge ÇOLAK, Erhan KARACA, Merve UĞUR, Kadir PEKMEZ, Nuran ÖZÇİÇEK PEKMEZ
“Corrosion Inhibition of Brass Alloy in NaCl and HCl Solutions by Bis-Benzimidazole” 124
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P36 Gizem Gümüşgöz ÇELİK, Mehmet Burak KOCA, Selahattin SERİN, Birgül YAZICI,
Gülfeza KARDAŞ
“Investigation of the Inhibitive Effect of Water-soluble Schiff Base on Mild Steel in 1
M HCl” 125
P38 Ayşe ERKAN, Ümmihan T. YILMAZ, Gökhan SAĞLAM, Şerife HELVACIOGLU
“Krank Millerine Uygulanacak Östemperleme Isıl İşlemi Prosesinin Geliştirilmesi” 127
P39 Fatima Zahra HAFIANE, Latifa TAHRI, Karim ARIFI, Hind ELBOUZAIDI, Rajaa
ROCHDI, Mohammed FEKHAOUI
“Biocorrosion-Biofilms Action on Water Wells in Irrigated Zone (Middle Atlas-
Morocco)” 129
P40 Abdurrahman AKDAĞ, Ali Tuncay ÖZYILMAZ
“Corrosion Behaviour of Poly(N-Methylaniline) Film on ZnNi Plated Carbon Steel” 131
P41 Latifa TAHRI, Fatima Zahra HAFIANE, Abdellah ELABIDI, Amal SAIDI, Ilham NASSRI,
Mohammed FEKHAOUI
“Bacterial Contribution to Corrosion: C. Perfringens Case in Water Wells in Irrigated
Zone (Middle Atlas-Morocco)” 132
P42 Esin Ateş GÜVEL, Nilgün KIZILCAN, Belkıs USTAMEHMETOĞLU, Esma SEZER
“Pirol ve Tiyofen Sonlu Siklohekzanon Formaldehit Reçinesi Kopolimerlerinin Çeliğin
Korozyonunu Önlemedeki Etkileri” 134
P44 Esin Ateş GÜVEL, Nilgün KIZILCAN, Belkıs USTAMEHMETOĞLU, Esma SEZER
“Polipirolün NaCl ve H2SO4 Ortamında Çeliğin Korozyonunu Önlemedeki Etkilerinin
Karşılaştırmalı İncelenmesi” 135
P48 Yusuf NUR, Gizem E. BAYOL
“The Synthesis of Silicon Carbide Film on Alumina Ceramics” 136
XVth International Corrosion Symposium
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ORAL PRESENTATIONS
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S1
SOLID STATE REFERENCE ELECTRODE & INDUSTRIAL BEST PRACTICES
Abed Sneineh*1 1 Borin Manufacturing Inc., UNITED STATES
Reference electrodes is the sensing elements used to measure CP system parameters, and by
choosing the right reference electrode for your application, the more accurate your measurements are, to
enable you to determine how effective the CP system works and protecting your assets.
The purpose of this study is to discuss and identify the challenges and difficulties facing CP
engineers and CP system designers and to help them to choose the right reference electrode, during the
CP system design stage and during the service life of the CP system, also to provide some knowledge on
how to trouble shoot defects can occur on the reference electrodes, during the installation and during
service life of the reference electrode, and finally, the industry best practice and reference electrode
installation procedure.
This study discusses exclusively the Solid state reference electrodes with the most commonly used
chemistry in buried applications:
• Cu-CuSO4 Copper-Copper Sulfate
• Zn-ZnSO4 Zinc-Zinc Sulfate
• Ag-AgCl Silver-Silver Chloride
• Pd-PdCl2 Palladium-Palladium Chloride
It is hoped this study will provide a reference for CP engineers and CP system designers, during the
process of choosing an installing the right reference electrode for their specs and requirements.
Key Words: Solid state reference electrode , Industrial best practices.
* Corresponding Author
E-Mail: [email protected]
Phone: +971 55 7427 318
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S4
TOWARDS UNDERSTANDING ATMOSPHERIC AND AQUEOUS LOCALISED
CORROSION OF AA6063-T5 ALUMINIUM ALLOY – A COMPREHENSIVE
STUDY USING TIME-LAPSE SKPFM, IN-SITU AFM AND CONVENTIONAL
ELECTROCHEMISTRY
Cem ÖRNEK*1,2, Christofer LEYGRAF1, Jinshan PAN1
1Division of Surface and Corrosion Science, Department of Chemical Science and Engineering,
KTH Royal Institute of Technology, Drottning Kristinas Väg 51, 100 44 Stockholm / Sweden 2Department of Corrosion in Energy and Process Industry, Swerea KIMAB AB, Isafjordsgatan 28A, 164
40 Kista / Sweden
Aluminum alloy AA6063 has been widely used as structural and functional materials and found
versatile usage in various industries. Exposure to indoor and outdoor can lead to various corrosion
scenarios, requiring the need for a thorough understanding of the corrosion behaviour in aqueous as well
as atmospheric conditions. The corrosion resistance under immersed, aqueous conditions have been well
studied, but exposures to humid-air, atmospheric conditions remained by far less studied and understood.
Localised corrosion under aqueous conditions can lead to totally different corrosion degradation scenarios
as contrasted to atmospheric exposures and may even not be compared with each other, necessitating the
examination of the material with scrutiny.
Localised corrosion of aluminium alloys is highly complex and has remained less understood due to
multi-scale structural and chemical heterogeneities in the microstructure. The latter is due to galvanic
inter-coupling among microstructural constituents, often leading to intergranular or pitting corrosion. It
has vital importance to know which sites in the microstructure have most susceptibility to localised
corrosion in order to assess the structural integrity of the alloy. There is further need to know the
corrosion process to understand if there is a corrosion (reiterative) sequence existing among
microstructural constituents which may be impeded or slowed down by countermeasures.
In this work, the susceptibility to localised corrosion of a commercial aluminium alloy AA6063-T5
has been studied under both immersed aqueous and atmospheric thin-film electrolyte exposure conditions.
The aqueous corrosion behaviour was studied by conventional electrochemistry and in-situ atomic force
microscopy (AFM) using exposure to chloride-containing solutions. Atmospheric corrosion
measurements were carried out by the contamination of chloride producing corrosive electrolytes at
elevated humidities at room temperature.
* Corresponding Author
E-Mail: [email protected]
Phone: +46725660302
XVth International Corrosion Symposium
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The scanning Kelvin probe force microscopy (SKPFM) was used to characterise the microstructure
for local susceptible sites to corrosion in both dry and humid environments with and without the presence
of chloride. In-situ AFM was used to monitor the onset and propagation of localised corrosion.
Comprehensive microstructure characterisation using scanning electron microscopy (SEM) and X-ray
diffraction (XRD) enabled, hence, understanding of susceptible sites to corrosion. SKPFM revealed large
and multi-scale Volta potential heterogeneities associated with sensitised regions next to intermetallic
phases, indicating enhanced electrochemical susceptibility. SKPFM further demonstrated nobility
inversion of microstructural components during exposure to corrosion, changing the localised corrosion
scenario. Dissolution was found to initiate around interphase boundaries adjacent to cathodic
intermetallics on anodic phases, being influenced by the local electrochemical conditions, being in good
correlation with SKPFM data. Post-corrosion SEM/EDX analysis revealed de-alloying of corrosion-
active sites. The results are discussed in light of better understanding localised corrosion behaviour of
6xxx-series aluminium alloys.
XVth International Corrosion Symposium
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S5
PASSIVITY BREAKDOWN ON DUPLEX STAINLESS STEEL INVESTIGATED
BY IN-SITU SYNCHROTRON SURFACE X-RAY ANALYSES
Cem ÖRNEK*1, Marie LÅNGBERG1,2, Jonas EVERTSSON3, Gary HARLOW3, Weronica LINPÉ3, Lisa
RULLIK3, Francesco CARLÀ4, Roberto FELICI5, Eleonora BETTINI6, Ulf KIVISÄKK6, Edvin
LUNDGREN3, Jinshan PAN1
1Division of Surface and Corrosion Science, School of Engineering Sciences in Chemistry, Biotechnology and
Health, KTH Royal Institute of Technology, SE-100 44 STOCKHOLM / SWEDEN 2Swerea KIMAB, SE-16407 KISTA / SWEDEN
3Division of Synchrotron Radiation Research, Lund University, SE-221 00 LUND / SWEDEN 4European Synchrotron Radiation Facility, 38000 GRENOBLE/ FRANCE
5SPINCNR, Area della Ricerca di Roma 2 − Tor Vergata, 00133 ROMA / ITALY 6Sandvik Materials Technology, SE-81181 SANDVIKEN / SWEDEN
The quality of passive films on metals determine their corrosion resistance, and therefore it has
paramount importance to understand the reasons for local breakdown in corrosive environments. The
passive film on duplex stainless steels is complex due to locally varying chemical and structural
heterogeneities. The nature of the passive film on austenitic and ferritic grains remained less understood,
and little is known about its interaction with corrosive electrolytes. Monitoring the passive film behaviour
during corrosion reactions in real time would be beneficial in order to understand structural and chemical
changes of the surface to associate with degradation mechanisms.
This work presents new findings about the passive film formed on super duplex stainless steel in
ambient air and corrosive environments, studied by synchrotron grazing-incidence X-ray diffraction
(GIXRD), X-ray reflectivity (XRR), and X-ray fluorescence (XRF). The passive film, formed in air, was
seen to be a nano-crystalline mixed-oxide. Electrochemical polarisation to the passive region in aqueous 1
M NaCl at room temperature resulted in an increase of the passive film thickness, de-alloying of Fe, and
partial loss of crystallinity. The thickness of the passive film reaches maximum prior to the onset of the
transition to the transpassive state of the steel, whereas a reduction of its density occurred due to the
generation of defects mainly caused by de-alloying phenomena. The passive film thickness as well as
density were seen to decrease during transpassive corrosion, with the extent increasing with the time and
magnitude of anodic polarisation. After termination of polarization to the transpassive regime,
reformation of the mixed-oxides was observed, showing a thicker, semi-crystalline, and more defective
nature with further new oxides/hydroxides. The onset of corrosion was seen to begin with dissolution of
Fe with its compounds, followed by Cr, Mo, and Ni. The alloy surface layer beneath the passive film was
seen to increase in thickness and density, suggesting enrichment of Ni and Mo during transpassive
corrosion. The passive film evolution in corrosive environment is discussed in light of better
understanding localised corrosion of super duplex stainless steel.
* Corresponding Author
E-Mail: [email protected]
Phone: +46 8 790 99 26
XVth International Corrosion Symposium
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S6
ZAMAK-2 ALLOY PREPARED by POWDER METALLURGY and
INVESTIGATION of CORROSION BEHAVIOR in 3.5% NACI
Mehmet Burak Koca*1, Rasiha Nefise Mutlu1, Gülfeza Kardaş1, Birgül Yazıcı1 1Çukurova Üniversitesi, Kimya Bölümü, Sarıçam / ADANA / TÜRKİYE
Powder metallurgy (PM) is a technique for making metal and metal alloy melt-free, with help of
pressure and temperature. Powder metallurgy technology includes various operations after the production
of metal powders, mixing of powders, shaping by pressing in the mold and sintering. The main purpose of
PM is; to obtain the metals as powders and to produce the machine parts by sintering them in the furnaces
after pressing these powders. Pressing is usually done at room temperature, sometimes at high
temperatures. The sintering heat treatment maintains the position of the melt and is carried out at a
temperature [1-3].
The ZAMAK obtained by powder metallurgy is a base metal zinc and an alloy with aluminum,
magnesium and copper alloy elements and is given in Table 1. Since 1991, zinc and its alloys have been
widely used in automotive components such as engine, gearbox systems.
The purpose of this work is to investigate the corrosion behavior of pressed, sintered zinc-based
material that ZAMAK-2 with the addition of titanium and iron. The homogenized powder mixtures were
pressed under high pressure and then sintered at 350 oC under nitrogen atmosphere for 2 hours. Corrosion
behavior of sintered and non-sintered alloys was investigated with electrochemical impedance
spectroscopy (EIS), anodic and cathodic polarization curves, linear polarization resistance (LPR) in 3.5%
NaCl solution. Materials prepared for this purpose was connected as anode and measurements were taken
with three electrode technique. The Pt plate and Ag/AgCl electrode were used as counter electrode and
reference electrode respectively. The surface morphology and chemical composition of the electrodes
were investigated by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX)
and X-ray powder diffraction (XRD) techniques.
Table 1. Compositions of prepared electrodes.
Al Cu Mg Zn Ti Fe
ZAMAK2 3,8 0,7 0,035 95,465
ZAMAK2/Ti 3,8 0,7 0,035 90,465 5
ZAMAK2/TiFe 3,8 0,7 0,035 85,965 5 5
Key Words: Powder Metallurgy, ZAMAK, Corrosion, Zinc
KAYNAKLAR
[1].A. Azizi, G.G. Haghighi, Fabrication of ZAMAK 2 alloys by powder metallurgy process, The International
Journal of Advanced Manufacturing Technology, 77 (2014) 2059-2065.
[2].F. Costa da Silva, K. Kazmierczak, C. Edil da Costa, J.C.G. Milan, J.M. Torralba, Zamak 2 Alloy Produced by
Mechanical Alloying and Consolidated by Sintering and Hot Pressing, Journal of Manufacturing Science and
Engineering, 139 (2017).
[3].L. Chen, G.-s. Huang, C. Zhang, D.-b. Xia, Y.-c. Zhao, F.-s. Pan, Corrosion behaviours and mechanical
properties of Fe/Mg–8Al–1Zn matrix composite, Materials Science and Technology, 33 (2017) 1312-1318.
* Corresponding Author
E-Posta: [email protected]
Telefon: +90 539 249 3003
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S8
NANO YAPILI İMPLANT YÜZEYLERİNİN KOROZYON DAVRANIŞLARI
Ahmet ÇAKIR*1
1Dokuz Eylül Üniversitesi, Müh. Fakültesi, Metalurji ve Malzeme Müh. Bölümü, İZMİR / TÜRKİYE
Nanometre seviyesindeki yüzeylerin yapısı, medikal teknoloji alanındaki ileri düzey uygulamalarda,
malzemelerin fiziksel ve kimyasal özelliklerini geliştirmek için önemli bir potansiyele sahiptir.
Biyomalzemelerin biyolojik ortamlarla etkileşimi büyük ölçüde yüzey özelliklerine bağlıdır. Yeni
dokuların vücuda yerleştirilen implant yüzeyi ile bağlantısı hücresel ve moleküler seviyede
gerçekleşeceği için nanometre boyutundaki yüzey özelliklerinin ayrı bir önemi vardır. Bu öneme binaen
implantın iyileşmesinde kararlı bir kemik-implant teması büyük bir öneme sahiptir ve nano yapılı
yüzeyler özellikle iyi bir osseointegrasyon, protein ve hücre bağlanması için son derece uygundur. Nano
parçacıkların özgül yüzey alanının çok büyük olması sebebiyle bu tip yüzeyler çok büyük bir kimyasal
reaktiviteye sahiptir. Bu artan yüzey aktivitesi, fizyolojik ortamlarda yeni kalsiyum fosfat tabakasını
oluşturmak için değerlendirilebilir.
Yüksek yüzey aktivitesi biyomalzemelerin tanıtıldıkları fizyolojik ortamlarda kolayca
bütünleşmesine sebep olur. Bunun yanında inflamasyona bağlı olarak fizyolojik ortamlarda meydana
gelen değişiklikler sonucu implant yüzeyini koruyan pasif filmler tahrip olabilirler. Pasif filmlerdeki bu
tahribat aşırı yükleme, yorulma ve tribolojik etkilerle de ortaya çıkabilir. İmplatın sağlığı açısından bu
tahribatın kısa zamanda giderilmesi gerekir. Aksi halde protez ömrünün kısalması veya sonlanması söz
konusu olabileceği gibi, aktif hale gelen yüzey gerek vücuda metalik iyon salınımı gerekse korozyon
bakımından faal hale gelecektir. Bunun için de implant yüzeyindeki pasif filmin kısa zamanda kendini
yenileyebilmesi, yüzeyin yeniden pasif hale gelmesi (repassivation) son derece önemlidir. Bu çalışmada
özellikle metalik biyomalzemelerde yüzeyin gerek nano boyuttaki kaplamalarla gerekse malzemenin ana
yapısının nano mikroyapılı olarak üretilmesi ile korozyon davranışlarında sağlanan gelişmeler kapsamlı
olarak ele alınacaktır.
Anahtar Kelimeler: Biyomalzeme, Nanoyapılı kaplamalar, kimasal yüzey aktivitesi, Pasif film, Yeniden
pasifleşme.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S9
INVESTIGATION OF ATTRITION-CORROSION BEHAVIOUR OF NANO-
FILLED DENTAL COMPOSITE MATERIALS
Efe Çetin YILMAZ*1
1Department of Technical Science of Pasinler Vocational School Ataturk University/ ERZURUM /
TURKEY
The aim of this work is to investigation of attrition-corrosion wear behaviour of nano- structured
dental composite materials under in vitro chewing tests. In the conditions recommended by the
manufacturer 10 pieces (12 mm diameter X 2 mm height) were produced from each composite material
(n=5). All test specimens were kept in distill water for 1 week and determined Vicker’s hardness and
surface roughness values before attrition-corrosion wear tests. Then attrition-corrosion wear tests were
performed using a dual-axis computer-controlled chewing simulation (50N, 360.000 chewing cycles 1.0
Hz frequency and 37 °C temperature). For each attrition-corrosion wear test, Al2O3 ball with a diameter
of 6 mm was used as antagonist material. Half of the specimens of each test group were immersed distill
water (about pH=7) and citric acid solution (about pH=3.2). The mean volume loss of all specimens after
the attrition-corrosion wear tests was determined with use non-contact 3D profilometer. In addition to a
random specimen was selected from each test group and Scanning Electron Microscope (SEM) images
were taken for analysis of wear tracks. The surface morphology of both composite material was severely
damaged in immersed citric acid solution under chewing tests. This can be explained by the more damage
to the organic matrix structure of the composite material in citric acid solution than immersed distill
water. Among the composite materials used in this study suggested correlations between Vickers
hardness and attrition-corrosion wear resistance are not significant. The results obtained in this study will
help to understand the effect of the pH value of the third abrasive surface on the composite material in the
three-body wear mechanism.
Key Words: attrition-corrosion wear, composite biomaterial, chewing simulation, hardness.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 542 764 50 18
XVth International Corrosion Symposium
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S10
EFFECT OF THERMAL CYCLING ON CONTACT-WEAR BEHAVIOUR OF
COMPOSITE MATERIALS IN CHEMICAL CORROSION ENVIRONMENT
Efe Çetin YILMAZ*1 1Department of Technical Science of Pasinler Vocational School Ataturk University/ ERZURUM /
TURKEY
The aim of this work is to effect of thermal cycling on contact-wear behaviour of different
composite materials in chemical corrosion environment under in vitro chewing tests. Five specimens of
each composite materials were exposed contact-wear tests using a computer-controlled chewing simulator
(1.2 Hz 50 N bite force loads, 120.000 mechanical cycles, constantly 37 °C temperature and thermal
cycling between 5 and 55°C 5min/cycle 3000 cycles) immersed in artificial saliva. Steatite balls of 6 mm
in diameter were used for each chewing test. All test samples were kept in distill water for 1 week and
determined Vicker’s hardness before contact wear tests. Half of the specimens of each test group were
loaded with a thermal cycle, the other half remaining without thermal cycle loading (n=5). The mean
volume loss of all specimens after the contact-wear tests was determined with use 3D profilometer. In
addition to a random specimen was selected from each test group and Scanning Electron Microscope
(SEM) images were taken for analysis of wear tracks. In this study, all composite materials showed
significantly more volume loss when occurred thermal cycle loading than without thermal cycle contact
wear tests. The result of this study is that the content of the monomer and harder glass structure contained
in the composite material caused more volume loss of the material under in vitro chewing tests.
Key Words: thermal cycle, artificial saliva, chemical corrosion, composite biomaterial, chewing simulation.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 542 764 50 18
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S11
INVESTIGATION OF THE CORROSION BEHAVİOURS OF DLC COATINGS
PRODUCED BY PVD TECHNIQUE
Şengül DANIŞMAN1, Tuba DEMİREL*1 1Department of Mechanical Engineering, Engineering Faculty, Erciyes University, KAYSERİ / TURKEY
The biomedical materials used in the body are in contact with living tissues in the human body. In liquid
media in the body, corrosive effects can occur on biomedical material. For this reason, it is necessary to
improve the corrosion properties of biomedical materials such as prostheses and implants used in the
health field and to increase the life expectancy of biomedical materials in the body. Diamond-like carbon
(DLC) coatings used in coating implants and prostheses have gained an important place in other types of
coated materials used in the healthcare sector in recent years. DLC coatings have been found to have high
corrosion resistance, low friction coefficient and good wear resistance. It is important for such coatings
that the coating adheres to the base material.
In this study, properties of DLC coatings obtained by PVD (Physical Vapor Deposition) method
were investigated and corrosion behavior was investigated. The greatest advantage of DLC coatings is
that they are not affected by corrosion and are in harmony with living tissue.
Key Wods: Diamond like coatings (DLC), Corrosion, Adhesion, Biocompatibility, PVD method, Biomedical
materials.
* Corresponding Author
E-Mail: [email protected]
Phone:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S13
YUMUŞAK ÇELİĞİN KLORÜRLÜ ÇÖZELTİLERDEKİ KOROZYON
DAVRANIŞLARINA KANTARON’UN (HYPERICUM PERFORATUM L.)
ETKİSİ
Güray Kılınççeker1*, Kayhan Karateke1, Atilla Çekiç2, Mustafa Kemal Sangün2, 1Department of Chemistry, Faculty of Sciences and Letters, Çukurova University,
01330, Balcalı, Sarıçam, Adana, Turkey 2Department of Chemistry, Faculty of Sciences and Letters, Mustafa Kemal University,
31060 Hatay, Turkey
Bu çalışmada, yumuşak çeliğin korozyon davranışlarına kantaron (Hypericum perforatum)'un,
inhibisyon etkisi, % 3.5 NaCl çözeltisinde (pH=6.0), potansiyodinamik polarizasyon, açık devre
potansiyeli ve elektrokimyasal empedans spektroskopisi (EIS) kullanılarak araştırılmıştır. Sabit sıcaklıkta
(298 K), en etkin inhibisyonu gösteren optimum derişim belirlenmiştir. İnhibisyon etkisinin, Hypericum
perforatum konsantrasyonundaki artışla arttığı bulunmuştur. Adsorpsiyon işlemi için termodinamik
parametre belirlenmiştir. Yumuşak çeliğin taramalı elektron mikroskobu (SEM) ile yüzey görüntüleri
alınmıştır. SEM görüntülerinden, metal yüzeyinde bir tabakanın oluştuğu saptanmıştır.
(a) %3,5 NaCl (b) % 3,5 NaCI + % 60 Kantaron
Şekil 1. Yumuşak çeliğin, Kantaron (HYPERICUM PERFORATUM L.) içeren ve içermeyen ortamlardaki SEM görüntüleri
Anahtar Kelimeler: yumuşak çelik; elektrokimyasal teknikler; korozyon; adsorpsiyon izotermi; hypericum
perforatum
TEŞEKKÜR
Bu çalışma Çukurova Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimince
Desteklenmiştir Proje Kodu: FYL-2017-7989
KAYNAKLAR [1]. G. Kılınççeker, C. Menekşe, “The Effect of Acetate Ions on the Corrosion of Reinforcing Steel in Chloride
Environments”. Protection of Metals and Physical Chemistry of Surfaces, 51, No. 4, pp. 659–666, 2015.
[2]. Kılınççeker G.and Çelik, S., AKU. J. Sci. Eng. 17., 2017,p. 192‐202.
[3]. Kılınççeker G., and Çelik, S., Pamukkale Univ.Sci.Eng. 23(7), 2017, p. 861-869.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 322 338 60 81-2494
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S14
MESALAZİNDEN SENTEZLENEN SCHİFF BAZININ HİDROKLORİK ASİT
İÇEREN ORTAMDA BAKIRIN KOROZYONUNA İNHİBİTÖR OLARAK
ETKİSİ
Güray Kılınççeker*1, Mahmut BAŞ1, Ahmet Murat GİZİR2, Mustafa Kemal Sangün3
1Department of Chemistry, Faculty of Sciences and Letters, Çukurova University, 01330, Balcalı,
Sarıçam, Adana, Turkey 2Department of Chemistry, Faculty of Sciences and Letters, Mersin University,
33343 Yenişehir, Mersin, Turkey 3Department of Chemistry, Faculty of Sciences and Letters, Mustafa Kemal University,
31060 Hatay, Turkey
Bu çalışmada, Mesalazin ve 2-hidroksi-benzaldehitin kondenzasyon tepkimesi ile sentezlenen (E)2-
hidroksi-5-((2-hidroksibenziliden)amino benzoik asit olan Hha’nın 1.0 M HCl ortamındaki bakırın
korozyon davranışına inhibitör etkileri potansiyodinamik polarizasyon, elektrokimyasal impedans
spektroskopisi teknikleri kullanılarak 298 K’de araştırılmıştır. Polarizasyon eğrilerinden, inhibitörlerin
karma inhibitör olarak davrandıkları belirlenmiştir. Bakırın yüzey morfolojileri taramalı elektron
mikroskobu, atomik ile görüntülenmiş, metalin yüzey temas açıcı (CA) ölçülmüştür. Elde edilen veriler
doğrultusunda, inhibitör moleküllerinin bakırın korozyonunun kontrolünde kullanılabileceği sonucuna
varılmıştır.
Şekil 1. 1.0 M HCl içerisinde 4 x10–2 M Hha içermeyen (a) ve içeren (b) asidik ortamlarda 120 saat süreyle bekletilmiş bakır
elektrotların 200 kat ve 150 kat büyütülmüş yüzey mikrografları
Anahtar Kelimeler:Korozyon, Elektrokimyasal impedans spektroskopisi, Schiff bazı, Taramalı elektron
mikroskobu, Atomik kuvvet mikroskobu, Yüzey temas açısı
TEŞEKKÜR
“Bu çalışma Çukurova Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimince
Desteklenmiştir Proje Kodu: FDK-2017-8458”.
KAYNAKLAR [1]. G. Kılınççeker, C. Menekşe, “The Effect of Acetate Ions on the Corrosion of Reinforcing Steel in Chloride
Environments”, Protection of Metals and Physical Chemistry of Surfaces, vol. 51. no. 4. pp. 659–666, 2015.
[2].H.J. Habeeb, H.M. Luaibi, R.M. Dakhil, A.A.H. Kadhum, A.A. Al-Amiery, T.S. Gaaz, “Development of new corrosion
inhibitor tested on mild steel supported by electrochemical study,” Results Phys., vol. 8, pp. 1260–1267, 2018.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 322 338 60 81-2494
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S15
ROLE OF AMOKLAVIN ON CORROSION INHIBITION OF MILD STEEL IN
0.5 M HCl
Başak DOĞRU MERT *1, Mehmet Erman MERT2, Gülfeza KARDAŞ2, Birgül YAZICI2 1Adana Science and Technology University, Energy Systems Engineering, Sarıçam / ADANA / TURKEY
2Çukurova University, Chemistry Department, Sarıçam / ADANA / TURKEY
The household drug-related waste and pharmaceutical waste drugs amounted to about 362,000
tones in Green Pharmacist Coop.’s 2017 Turkey report [1]. According to report, a large part of the gross
national income goes to waste. Therefore, the recovery of waste medicines has crucial importance for not
only economy but also for environment. Most of the waste drugs are antibiotics. In order to reduce the
waste disposal-cost indirectly, the compatibility of antibiotic drugs as corrosion inhibitor was studied.
The inhibition effect of antibiotic drug which is entitled “Amoklavin” on the corrosion behavior of mild
steel (MS) was investigated in acidic medium. Amoklavin includes amoxicillin trihydrate
(C16H19N3O5S.3H2O), (AM) and potassium clavulanate (C8H8NO5K) (PC) as a main ingredient. Each
vial contains 1000 mg amoxicillin and 200 mg potassium clavulanate. In this study 5, 10, 25 and 50 ppm
“total AM - PC” concentrations were used.
In order to determine corrosion behavior of MS in absence and presence of AM – PC,
electrochemical impedance spectroscopy and polarization measurements were obtained. Surface
morphology was monitored by scanning electron microscope (SEM). The quantum chemical calculations
were achieved via DFT with the B3LYP/6-311++G (d, p) basis set. The results showed that; inhibition
efficiency (η) increased with increasing concentration. After 1 h immersion, η values were 85.4, 93.5,
95.5 and 96.1% in 0.5 M HCl in the presence of 5, 10, 25 and 50 ppm AM – PC, respectively. The η
decreased with increasing immersion time, for 50 ppm AM – PC, values were 92.9, 92.3, 80.2 and 62.6%
after 24, 72, 120 and 168 hours respectively. Adsorption mechanism of AM – PC molecules on MS
surface obeyed the Langmuir isotherm. According to polarization measurements, AM-PC retard both
anodic and cathodic reactions. The EHOMO and ELUMO were -0.048 and 0.025 eV for AM, -5.025 and
0.107 eV for PC. The higher negative NBO charges were located on N (amine subs.) and S atoms.
Therefore, adsorption may be occurred on amine, and/or S terminal of molecules.
Key Words: Green inhibitor, mild steel, corrosion.
REFERENCES
[1]. http://www.haberturk.com/saglik/haber/1436979-turkiyenin-atik-ilac-raporunda-carpici-rakamlar.
[Accessed: 21- May- 2018].
* Corresponding Author
E-Mail: [email protected]
Phone: +90 322 455 00 00 (2404)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S16
AZ91 Mg ALAŞIMLARINDA Fe TOLERANS LİMİT DEĞERLERİNİN
ARAŞTIRILMASI
Şennur CANDAN*, Serdar ÇİM, Seren EMİR, Ercan CANDAN
Bilecik Şeyh Edebali Üniversitesi, Makine Mühendisliği Bölümü, BİLECİK / TÜRKİYE
Magnezyum (Mg) günümüzde kullanılan metalik malzemeler içinde en hafif olanıdır. Ancak, saf
Mg’un dayanımının düşük olması nedeniyle kullanım alanındaki sınırlamalar değişik alaşımların
üretilmesine yol açmıştır. Mg’un önemli alaşım grupları Mg-Al, Mg-Zn ve Mg-toprak alkali metalleri
(RE) olarak gruplandırılır. Diğer Mg alaşımlar ile karşılaştırıldığında, AZ serisi (Al ve Zn ile
alaşımlandırılan grup) özellikle AZ91 Mg alaşımı (Mg-%9Al-%1Zn) sahip olduğu iyi döküm ve yüksek
mekanik özellikleri sayesinde öne çıkmaktadır.
Magnezyum alaşımlarının korozyon dayanımını olumsuz etkileyen Fe, Si, Cu ve Ni gibi empürite
elementleri her zaman bulunur [1,2]. Fe empürite elementi, küçük bir miktar bile olsa, Mg alaşımlarının
korozyon direncini önemli ölçüde azaltabilir [1]. Özellikle, endüstriyel uygulamalar için Fe’nin tolerans
limit değerlerinin bilinmesi maliyet/kalite oranı açısından son derece önemlidir. Literatürde Fe’nin
olumsuz etkisi ile ilgili tolerans limit değerleri saf Mg için bulunmasına rağmen [3,4], AZ91 alaşımları
için bu bilgi sınırlıdır [5]. Diğer taraftan, alaşım elementlerinin [6-8] yanısıra katılaşma hızının [9-11] ve
üretim yöntemlerinin [12] de mikroyapıyı önemli ölçüde etkilediği ve bunlara bağlı alaşımın korozyon
davranışları üzerinde ciddi etkiler yaptığı bilinmektedir .
Bu çalışmada, aynı şartlarda üretilmiş (benzer katılaşma hızı ve benzer kimyasal bileşimde) farklı
Fe içeriğine sahip AZ91 alaşımlarının korozyon davranışları - Fe tolerans limit değeri arasındaki ilişki
değerlendirilmiştir. Korozyon davranışları %3,5 NaCl çözeltisinde, ağırlık kaybı ve potansiyodinamik
polarizasyon test yöntemleri kullanılarak değerlendirilmiştir. Sonuçlar, AZ91 alaşımı Fe limit değerinin
% 0,05 olduğunu bu değerden sonra korozyon kaybının eksponansiyel olarak arttığını göstermiştir.
Anahtar Kelimeler: AZ91Mg alaşımı, Mikroyapı, Korozyon.
KAYNAKLAR [1]. F. Pan, M. Yang and X. Chen, “A REVIEW ON CASTING MAGNESIUM ALLOYS: MODIFICATION
OF COMMERCIAL ALLOYS AND DEVELOPMENT OF NEW ALLOYS”, Journal of Materials
Science & Technology, vol. 32, pp.1211-1221, 2016.
[2]. F. Pan, X. Chen, T. Yan, T. Liu, J. Mao, W. Luo, Q. Wang, J. Peng, A. Tang and B. Jiang “A NOVEL
APPROACH TO MELT PURIFICATION OF MAGNESIUM ALLOYS” Journal of Magnesium and
Alloys, vol. 4, pp. 8–14, 2016.
[3]. I. J. Polmear: “Light alloy”’, 3rd (Ed.) edn; London, UK, Arnold, 1995.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 228 2141539
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | 14
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[4]. H. E. Friedrich and B. L. Mordike: “Magnesium technology – metallurgy, design data, applications”;
Germany, Springer-Verlag, 2006.
[5]. G. L. Song and A. Atrens “CORROSION MECHANISMS OF MAGNESIUM ALLOYS”, Adv. Eng.
Mater., vol. 1, pp. 11-33, 1999.
[6]. S. Candan, M. Unal, M. Turkmen, E. Koc, Y. Turen and E. Candan, “IMPROVEMENT OF
MECHANICAL AND CORROSıON PROPERTIES OF MAGNESIUM ALLOY BY LEAD
ADDITION,” Materials Science & Engineering A, vol. 501, no. 1-2, pp. 115-118, 2009.
[7]. S. Candan, M. Unal, E. Koc, Y. Turen and E. Candan, “EFFECT OF TITANIUM ADDITIONS ON
MECHANICAL AND CORROSION BEHAVIOURS OF AZ91 MAGNESIUM ALLOY,” Journal of
Alloys and Compounds, vol. 672, pp. 197-203, 2011.
[8]. K. Gusieva, C.H.J. Davies, J.R. Scully and N. Birbilis, “CORROSION OF MAGNESIUM ALLOYS: THE
ROLE OF ALLOYING,” J. International Materials Reviews, vol. 60, no. 3, pp. 169-194, 2015.
[9]. J. Wang, S. Huang, S. Guo, Y. Wei, F. Pan, “EFFECTS OF COOLING RATE ON MICROSTRUCTURE,
MECHANICAL AND CORROSION PROPERTIES OF Mg-Zn-Ca ALLOY,” Transactions of Nonferrous
Metals Society of China, vol. 23, pp.1930-1935, 2013.
[10]. S. Candan, M. Celik and E. Candan, “EFFECTIVENESS OF Ti-MICRO ALLOYING IN RELATION TO
COOLING RATE ON CORROSION OF AZ91 MG ALLOY,” Journal of Alloys and Compounds, vol.
672, pp. 197-203, 2016.
[11]. A. Tanverdi, “MAGNEZYUM ALAŞIMI AZ91’İN KOROZYON DAVRANIŞINA KATILAŞMA HIZI
İLE Sİ VE Y KATKI ELEMENTLERİNİN ETKİSİ,”Yüksek Lisans Tezi, Metalurji Mühendisliği Anabilim
Dalı, Osmangazi Üniversitesi, Eskişehir, Turkiye, 2005.
[12]. G. Song, A. Atrens and M. Dargusch “INFLUENCE OF MICROSTRUCTURE ON THE CORROSION
OF DIE CAST AZ91D,” Corrosion Science, vol. 41, no. 2, pp. 249-273, 1999.
XVth International Corrosion Symposium
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S17
AZ91 Mg ALAŞIMININ KOROZYONUNDA Fe’nin ZARARLI ETKİSİNİN
AZALTILMASINDA YENİ BİR YAKLAŞIM
Şennur CANDAN, Serdar ÇİM, Seren EMİR, Ercan CANDAN*
Bilecik Şeyh Edebali Üniversitesi, Makine Mühendisliği Bölümü, BİLECİK / TÜRKİYE
Magnezyumun (Mg) sahip olduğu en önemli özelliği ağırlık olarak alüminyumdan %35 ve
demirden %75 daha hafif olmasıdır. Ancak, saf Mg’un dayanımının düşük olması nedeniyle kullanım
alanındaki sınırlamalar değişik alaşımların üretilmesine yol açmıştır. Mg’un önemli alaşım grupları Mg-
Al, Mg-Zn ve Mg-toprak alkali metalleri (RE) olarak gruplandırılır. Diğer Mg alaşımlar ile
karşılaştırıldığında, AZ serisi (Al ve Zn ile alaşımlandırılan grup) özellikle AZ91 Mg alaşımı (Mg-%9Al-
%1Zn) sahip olduğu iyi döküm ve yüksek mekanik özellikleri sayesinde öne çıkmaktadır. Özgül
mukavemet değerlerinin yüksek olmasından dolayı AZ serisi Mg alaşımları otomotiv endüstrisinden
elektronik ve uzay endüstrisi gibi birçok mühendislik alanında kullanım alanlarına sahip olmakla birlikte
düşük toksik özelliği nedeniyle biyo-uyumlu ve biyo-bozunur bir metalik biyomalzeme olarak, ortopedik
implant uygulamalarında plaka ve vida yapımında potansiyel implant malzemeler olarak kullanılması da
son yıllarda ilgi çekmektedir [1-10].
Mg alaşımlarının korozyon direnci, Fe empürite oranınına oldukça duyarlıdır [11-15]. Çok küçük
değerler dahi alaşımın korozyon direncini azaltmaktadır [11,15]. Literatür araştırmaları [16-19] AZ serisi
Mg alaşımına Ti ilavesi ile alaşımın mekanik dayanım ve korozyon direncinin etkin bir biçimde
artırdığını göstermiştir. Mekanik dayanım ve korozyon direncindeki artış, mikroyapıdaki β fazının Ti
ilavesi ile parçalı ayrışmış ötektikten tam ayrışmış ötektiğe dönüşmesine dayandırılmıştır [16,17]. Ancak,
Fe’nin AZ91 Mg alaşımlarının korozyonu üzerindeki zararlı etkisini azaltmada Ti’un rolü ile ilgili
çalışma bulunmamaktadır.
Bu çalışmada farklı Fe içeriğine sahip Ti ile mikro alaşımlandırılmış AZ91 alaşımlarının korozyon
dayanımlarında Ti’nin rolü araştırılmıştır. Korozyon davranışları %3.5 NaCl çözeltisinde, ağırlık kaybı ve
potansiyodinamik polarizasyon test yöntemleri kullanılarak değerlendirilmiştir. Sonuçlar, Ti’nin AZ91
alaşımlarında çok yüksek Fe empürite oranlarında (% 0.1 Fe) dahi korozyon direncini kayda değer oranda
arttırdığını göstermiştir.
Anahtar Kelimeler: AZ91 Mg alaşımı, Mikroyapı, Korozyon.
KAYNAKLAR [1]. A.A. Luo and A.K. Sachdev “Applications of magnesium alloys in automotive engineering,” Advances in
Wrought Magnesium Alloys, Cambridge, UK: Woodhead Publishing, 2012.
[2]. M.Ö. Pekgüleryüz, K.U. Kainer and A.A. Kaya, “Fundamentals of magnesium alloy metallurgy,”
Philadelpia: Woodhead Publishing, 2013.
[3]. M.V. Manuel, A. Singh, M. Alderman and N.R. Neelameggham, Magnesium Technology 2015, 1. Baskı,
USA: Wiley Publishing, 2015.
* Sorumlu Yazar
E-Posta: [email protected]
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | 16
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[4]. F. Witte, V. Kaese, H. Haferkamp, E. Switzer, A. Meyer-Lindenberg, C.J. Wirth and H. Windhagen, “In
vivo corrosion of four magnesium alloys and the associated bone response,” Biomaterials, vol. 26, no. 17,
pp. 3557-3563, 2005.
[5]. M.P. Staiger, A.M. Pietak, J. Huadmai and G. Dias, “Magnesium and its alloys as orthopedic
biomaterials: a review,” Biomaterials, vol. 27, no. 9, pp. 1728-1734, 2006.
[6]. G.E.J. Poinern, S. Brundavanam and D. Fawcett, “BIOMEDICAL MAGNESIUM ALLOYS: A
REVIEW OF MATERIAL PROPERTIES, SURFACE MODIFICATIONS AND POTENTIAL AS A
BIOGRADABLE ORTHOPAEDIC IMPLANT,” American Journal of Biomedical Engineering, vol. 2,
no. 6, pp. 218-240, 2012.
[7]. H. Waizy, J.M. Seitz and J. Reifenrath, “BIODEGRADABLE MAGNESIUM IMPLANTS FOR
ORTHOPEDIC APPLICATIONS,” American Journal of Biomedical Engineering,” vol. 48, no. 1, pp. 39-
50, 2013.
[8]. S. Agarwal, J. Curtin, B. Duffy and S. Jaiswal, “BIODEGRADABLE MAGNESIUM ALLOYS FOR
ORTHOPAEDIC APPLICATIONS: A REVIEW ON CORROSION, BIOCOMPATIBILITY AND
SURFACE MODIFICATIONS,” Materials Science and Engineering, vol. 68, pp. 948-963, 2016.
[9]. H. Gerengi, E. Kaya, M. Cabrini, “SAF MAGNEZYUMUN BİYOBOZUNUR MALZEME OLARAK
KULLANILMA POTANSİYELİ,” İleri Teknoloji Bilimleri Dergisi, c. 6, ss. 9-25, 2017.
[10]. C. Blawert, N. Hort and K.U. Kainer, “AUTOMOTIVE APPLICATIONS OF MAGNESIUM AND ITS
ALLOYS,” Transactions of the Indian of Metals, vol. 57, no. 4, pp. 397-408, 2004.
[11]. F. Pan, M. Yang and X. Chen, “A REVIEW ON CASTING MAGNESIUM ALLOYS: MODIFICATION
OF COMMERCIAL ALLOYS AND DEVELOPMENT OF NEW ALLOYS”, Journal of Materials
Science & Technology, vol. 32, pp.1211-1221, 2016.
[12]. F. Pan, X. Chen, T. Yan, T. Liu, J. Mao, W. Luo, Q. Wang, J. Peng, A. Tang and B. Jiang “A NOVEL
APPROACH TO MELT PURIFICATION OF MAGNESIUM ALLOYS” Journal of Magnesium and
Alloys, vol. 4, pp. 8–14, 2016.
[13]. I. J. Polmear: “Light alloy”’, 3rd (Ed.) edn; London, UK, Arnold, 1995.
[14]. H. E. Friedrich and B. L. Mordike: “Magnesium technology – metallurgy, design data, applications”;
Germany, Springer-Verlag, 2006.
[15]. G. L. Song and A. Atrens “CORROSION MECHANISMS OF MAGNESIUM ALLOYS”, Adv. Eng.
Mater., vol. 1, pp. 11-33, 1999.
[16]. S. Candan, M. Unal, E. Koc, Y. Turen and E. Candan, “EFFECT OF TITANIUM ADDITIONS ON
MECHANICAL AND CORROSION BEHAVIOURS OF AZ91 MAGNESIUM ALLOY,” Journal of
Alloys and Compounds, vol. 672, pp. 197-203, 2011.
[17]. S. Candan, M. Celik and E. Candan, “EFFECTIVENESS OF Ti-MICRO ALLOYING IN RELATION
TO COOLING RATE ON CORROSION OF AZ91 MG ALLOY,” Journal of Alloys and Compounds,
vol. 672, pp. 197-203, 2016.
[18]. H.Y. Choi and W.J. Kim, “THE IMPROVEMENT OF CORROSION RESISTANCE OF AZ91
MAGNESIUM ALLOY THROUGH DEVELOPMENT OF DENSE AND TIGHT NETWORK
STRUCTURE OF AL-RICH Α PHASE BY ADDITION OF A TRACE AMOUNT OF Ti,” Journal of
Alloys and Compounds, vol. 696, pp. 736-745, 2017.
[19]. X. Ai and G. Quan, “EFFECT OF Ti ON THE MECHANICAL PROPERTIES AND CORROSION OF
CAST AZ91 MAGNESIUM ALLOY,” The Open Materials Science Journal, vol. 6, pp. 6-13, 2012.
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S18
INFLUENCE OF TEMPERATURE ON MICROSTRUCTURE AND CORROSION
RATE OF API N80 CARBON STEEL
F. CHELGHAM1, S. BOUDJEMA*2, N. BOUZID3, M. SAIDI1, A. BOUMAZA3 1Laboratoire de Valorisation et Promotion des Ressources Sahariennes, Université Kasdi Merbah, 30000
Ouargla, Algeria 2Laboratoire de Catalyse et Synthèse en Chimie Organique, Faculté des sciences, University of Tlemcen
1300, Algeria 3Structures, Properties and Inter Atomic Interactions Laboratory (LASPI2A), Faculty of Science and
technology, Unversity of Abbes Laghrour, Khenchela 40000, Algeria
Recently, Pipeline corrosion is a major problem facing many oil and gas industries today because of
the enormous downtime associated with corrosion related failures. In this study, the effect of tempering
temperature (200, 400 and 500 °C) on the corrosion behavior of American Petroleum Institute (API) N80
steel in albian water at different gradient temperatures (0, 3, 9 and 16 °C) were investigated using X-ray
diffraction (XRD), the electrochemical measurements combined with hardness test. XRD patterns have
shown that the API N80 steel samples crystallize in ferrite type structure with a strong (110) orientation.
We remarked that all samples the N80 are a nanometric grain size, the values of grain sizes given in the
range from 211 to 450 Å. Corrosion rates of samples are correlated with structural changes (grain size,
strain) in samples with increasing tempering temperature. Steel N80 with higher tempering temperature
exhibited excellent corrosion resistance with lower corrosion current density. The distinction of corrosion
resistance can be attributed to increased grain sizes and decreased residual stress and hardness.
Key Words: API N80, residual stresses, tempering temperature, corrosion, hardness
* Corresponding author:
E-Mail: [email protected]
Phone:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S19
CORROSION PERFORMANCE OF CRYOGENIC TREATED AZ91
MAGNESIUM ALLOYS IN THE SIMULATED HUMAN BODY FLUID
Bassady GASSAMA*1, Mustafa Özgür ÖTEYAKA2 1Eskişehir Osmangazi University, Mechanical Department, ESKIŞEHIR / TURKEY
2Eskişehir Osmangazi University, Eskişehir Vocational School, Mechatronic Department, ESKIŞEHIR / TURKEY
Recently, magnesium alloys become very attractive biomaterials as using biodegradable stent [1].
However, the corrosion rapid of magnesium limit their function [2-4]. In this study, AZ91 alloy was
cryogenic treated at -196oC for 48h and corrosion performance was evaluated versus AZ91 untreated. The
samples were immerged in 0.9% NaCl solution (simulating a human body fluid) and were tested by
electrochemical methods such as the open circuit potential measurement (OCP), the potentiodynamic
polarization, the electrochemical impedance spectroscopy (EIS) and the cyclic voltammetry (CV). In
general, the results obtained for the electrochemical studies shows that the cryogenic treated AZ91 sample
hold superior corrosion resistance when compared to the former sample. After 2 hours of OCP test,
treated AZ91 was slightly more noble than untreated AZ91 (figure 1). The slopes at the passivation zones
were steeper for the cryogenic treated sample and the corrosion potential of the cryogenic sample was
also lower than that of the former sample as determined by using the polarization method. A more aced
loop was displayed for the cryogenic treated sample when the EIS was carried out at a higher frequency,
also indicating that the later sample possess higher corrosion resistance compared to the former sample.
Figure 1. OCP behavior of cryogenic treated AZ91 alloy versus untreated AZ91.
Key Words: Magnesium Alloys, Corrosion, Cryogenic treatment, Impedance Spectroscopy,
REFERENCES
[1] Y. Gao, L. Wang, X. Gu, Z. Chu, M. Guo, and Y. Fan, “A quantitative study on magnesium alloy stent
biodegradation,” Journal of Biomechanics, vol. 74, pp. 98-105, 2018/06/06/, 2018.
[2] M. Esmaily, J. E. Svensson, S. Fajardo, N. Birbilis, G. S. Frankel, S. Virtanen, R. Arrabal, S. Thomas, and
L. G. Johansson, “Fundamentals and advances in magnesium alloy corrosion,” Progress in Materials
Science, vol. 89, pp. 92-193, 2017/08/01/, 2017.
[3] J. Wang, Y. Zhou, Z. Yang, S. Zhu, L. Wang, and S. Guan, “Processing and properties of magnesium alloy
micro-tubes for biodegradable vascular stents,” Materials Science and Engineering: C, vol. 90, pp. 504-
513, 2018/09/01/, 2018.
[4] L.-C. Zhang, M. Xu, Y.-D. Hu, F. Gao, T. Gong, T. Liu, X. Li, and C.-J. Pan, “Biofunctionization of
biodegradable magnesium alloy to improve the in vitro corrosion resistance and biocompatibility,” Applied
Surface Science, vol. 451, pp. 20-31, 2018/09/01/, 2018.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 537 373 3270
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S20
Mg/NiTi METAL MATRİSLİ KOMPOZİTLERİN KOROZYON
DUYARLILIKLARI
Fevzi KELEN*1, Tarık AYDOĞMUŞ2, Mehmet GAVGALI3, Burak DİKİCİ4 1Yüzüncü Yıl Üniversitesi, Motorlu Araçlar ve Ulaştırma Teknolojileri Bölümü, VAN / TÜRKİYE
2Yüzüncü Yıl Üniversitesi, Makine Mühendisliği Bölümü, VAN / TÜRKİYE 3Atatürk Üniversitesi, Makine Mühendisliği Bölümü, ERZURUM / TÜRKİYE
4Atatürk Üniversitesi, Metalürji ve Malzeme Mühendisliği Bölümü, ERZURUM / TÜRKİYE
İyi bilindiği üzere; magnezyum (Mg) ve alaşımlarının günümüz mühendislik uygulamalarında
yaygın olarak kullanılamamasının başlıca iki sebebi bulunmaktadır. Bunlar; pek çok durumda arzu edilen
mekanik özellikleri karşılayamaması ve korozyona karşı yüksek duyarlılıklarıdır. Mekanik özelliklerin
artımı için Mg’nin seramik partiküller ile takviye edilmesi günümüzde en sık kullanılan yöntemlerin
başında gelmektedir. Ancak, özellikle üretimde çoğu zaman döküm tekniklerinin tercih edilmesi nedeni
ile bileşenlerin maruz kaldığı yüksek sıcaklıklar istenmeyen arayüzey reaksiyonlarının oluşmasına ve sert
seramik takviyeler nedeniyle de sünekliliğin arzu edilen seviyelerin altında kalmasına neden olmuştur. Bu
problemlerin üstesinden gelmek için alternatif olarak TiNi alaşımının kullanılması dikkat çekicidir [1].
Yapılan çalışmalar Mg’un üretim yöntemine, metalürjik ve alaşım yapısına bağlı olarak tane boyutunun
ve faz dağılımının korozyon özelliklerini büyük ölçüde değiştirdiğini göstermiştir [2], [3]. Bu çalışmada;
hacimce %5-25 arası değişik oranlarda TiNi ile takviye edilmiş saf Mg matrisli kompozitler sıcak
presleme tekniği ile başarılı bir şekilde üretilmişlerdir. Özellikle otomotiv endüstrisi için aday bu yeni
malzemelerde yukarıda sayılan sebeplerden dolayı korozyon davranışının bilinmesi büyük önem arz
etmektedir. Bu amaçla, üretilen kompozitlerin korozyon duyarlılıkları üzerine takviye fazı hacim oranının
etkisi %3.5 NaCl çözeltisi içerisinde potansiyodinamik polarizasyon (PDS) tekniği ile araştırılmıştır.
Elektrokimyasal değerlendirmeler ise Tafel ekstrapolasyon yöntemi ile yapılmıştır. Kompozitlerin
korozyon öncesi/sonrası metalografik incelemeleri, taramalı elektron mikroskobu (SEM) ve optik
mikroskop (OM) kullanılarak gerçekleştirilmiştir. Elde edilen bulgular karşılaştırmalı ve sistematik bir
yaklaşımla bildiri detaylarında irdelenmiştir.
Anahtar Kelimeler: Magnezyum matrisli kompozit, toz metalürjisi (TM), TiNi, korozyon, polarizasyon (PDS).
TEŞEKKÜR
Bu çalışma TÜBİTAK tarafından finansal olarak desteklenmiştir (Proje No: 215M808).
KAYNAKLAR [1]. T. Aydogmus, “Processing of interpenetrating Mg–TiNi composites by spark plasma sintering,” Mater. Sci. Eng. A,
vol. 624, pp. 261–270, Jan. 2015.
[2]. G. Song and A. Atrens, “Understanding Magnesium Corrosion—A Framework for Improved Alloy Performance,”
Adv. Eng. Mater., vol. 5, no. 12, pp. 837–858, Dec. 2003.
[3]. Z. Esen, B. Dikici, O. Duygulu, and A. F. Dericioglu, “Titanium-magnesium based composites: Mechanical
properties and in-vitro corrosion response in Ringer’s solution,” Mater. Sci. Eng. A, vol. 573, pp. 119–126, 2013.
* Sorumlu Yazar
E-Posta: [email protected]
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S21
TiNi İLE TAKVİYE EDİLMİŞ AZ91D MATRİSLİ KOMPOZİTLERİN
KOROZYON DAVRANIŞI
Fevzi KELEN*1, Tarık AYDOĞMUŞ2, Mehmet GAVGALI3, Burak DİKİCİ4 1Van Yüzüncü Yıl Üniversitesi, Motorlu Araçlar ve Ulaştırma Teknolojileri Bölümü, VAN / TÜRKİYE
2Van Yüzüncü Yıl Üniversitesi, Makine Mühendisliği Bölümü, VAN / TÜRKİYE 3Atatürk Üniversitesi, Makine Mühendisliği Bölümü, ERZURUM / TÜRKİYE
4Atatürk Üniversitesi, Metalürji ve Malzeme Mühendisliği Bölümü, ERZURUM / TÜRKİYE
Magnezyum ve alaşımlarının otomotiv endüstrisindeki kullanımı her geçen gün artmaktadır. Taşıt
ağırlığının önemli bir kısmını oluşturan motor bloğu, silindir kapağı, vites kutusu ve diferansiyel kutusu
gibi güç aktarma organlarında önemli miktarda kullanım alanı bulacağı bileşenleri olacağı
öngörülmektedir [1]. Fakat magnezyum ve alaşımlarının yüksek sıcaklık mekanik özelliklerinin ve
korozyon dayanımlarının düşük olması bu alanlardaki kullanımlarını sınırlamaktadır. Seramik partikül ve
fiberler ile güçlendirilmiş magnezyum matrisli kompozitlerde mukavemette belirgin bir artış gözlemlense
de matris takviye ara yüzeyinde kimyasal reaksiyonlar sonucu oluşan ikincil fazlar ve yetersiz
ıslatılabilirlik sünekliğin önemli oranda düşmesine neden olmaktadır [2]. Bu olumsuzluklardan dolayı
magnezyum ile benzer fiziksel özelliklere sahip metalik malzemeler takviye materyali olarak
kullanılmaktadır. Bunlar arasında TiNi alaşımları sahip oldukları üstün özellikler nedeniyle ön plana
çıkmaktadır. Bu çalışmada AZ91D magnezyum alaşımı TiNi ile farklı oranlarda takviye edilerek belirli
süre ve sıcaklıklarda sinterlendi (tek eksenli sıcak presleme tekniği kullanıldı). Üretilen kompozitlerin
korozyon davranışı % 3.5 NaCl çözeltisi içerisinde potansiyodinamik polarizasyon (PDS) yöntemi ile
belirlendi. Korozyon akımı ve potansiyeli Tafel ekstrapolasyonu metodu ile tespit edildi. Kompozit
malzemelerin elektrokimyasal deneyler sonucu elde edilen korozif özellikleri korozyon öncesi ve sonrası
yapılan taramalı elektron mikroskobu (SEM) ve optik mikroskop (OM) görüntüleri ile desteklendi.
Anahtar Kelimeler: Magnezyum, Kompozit malzemeler, TiNi şekil bellekli alaşımlar, Toz metalürjisi, Korozyon.
TEŞEKKÜR
Bu çalışmayı maddi olarak destekleyen Türkiye Bilimsel ve Teknolojik Araştırma Kurumu’na
(TÜBİTAK, Proje No: 215M808) teşekkürlerimizi sunarız.
KAYNAKLAR [1]. Kelen, F., Aydoğmuş, T., Gavgali, M., 2016. Shape Memory Meterials for Improvement of the high
Temperature Strenght of Magnesium and Its Alloys, International Conference on Material Science and
Technology in Cappadocia, Nevşehir, http://www.imstec2016.org [Accessed: 20 July 2016].
[2]. Aydogmus, T., Processing of interpenetrating Mg–TiNi composites by spark plasma sintering, Materials
Science and Engineering, A, 624, 261-270, 2015.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S22
THE EFFECTS OF CORROSION ON YARN QUALITY THAT ARISED ON
DRUMS AT RING SPINNING MACHINES
Pınar PARLAKYİĞİT*1, Hakan YAYKAŞLI2 1Adıyaman University, Textile Engineering, ADIYAMAN / TURKEY
2 Kahramanmaraş Sütçü İmam University, Material Science and Engineering, KAHRAMANMARAŞ / TURKEY
In this study, quality of the yarns against the drum corrosion behavior was studied. Drum is a
machine element in the ring spinning unit.
In ring spinning machines operating at high speeds of production, corrosion between machine parts
and the fiber-yarn is inevitable. Regarding this reason, some problems arised at the quality values of
produced yarns such as low strength values, hairiness and yarn unevenness.
Unevenness, hairiness and strength tests of these yarns were performed. It was found that the
unevenness, strength and hairiness test values of the yarns that are produced with new drums were higher
than the yarns that are produced with corroded drums.
In addition, the changes of the physical corrosion on the drums in these machines were examined
morphologically at scanning electron microscope. Qualitative and quantitative analysis were carried out
on an EDX spectrometer. When the new drum and the corroded drum were examined by Scanning
Electron Microscope, it was seen that the structures are similar and contain carbon, nickel, oxygen and
phosphorus but at the corroded parts of the drums, nickel-plated structures were turned to iron.
Key Words: Ringspinning, friction, abrasion, corrosion, SEM-EDX, yarn quality parameters.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 344 3001864
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S23
%3 NaCl ÇÖZELTİSİNDE 304 ÇELİĞİNİN ÇUKURCUK KOROZYONUNA
KARŞI 3-AMİNO-5-METİLTİYO-1H-1,2,4-TRİAZOL ve SODYUM
MOLİBDATIN İNHİBİSYON ETKİSİ
Gözde TANSUĞ*
Çukurova Üniversitesi, Ceyhan Mühendislik Fakültesi, Kimya Mühendisliği Bölümü, Ceyhan / ADANA
/ TÜRKİYE
Endüstriyel uygulamalarda yaygın olarak kullanılan östenit çeliklerin yüksek korozyon dayanımı
sulu çözeltilerde yüzeyinde oluşan pasif oksit filmine bağlıdır. Yüksek kararlılığa sahip oksitler ve oksi-,
hidroksit bileşikleri pasif filmin en dış yüzeyinde yer alırlar. Pasif filmin direnci paslanmaz çeliğin maruz
kaldığı ortamlara ve çeliğin bileşimine göre değişmektedir. Klorür gibi agresif iyonlar, bölgesel olarak
pasif tabakaya zarar vererek çukurcuk korozyonuna neden olmakta ve korozyonu hızlandırmaktadırlar.
Yaygın olarak kullanılan azol ve tiol gibi organik inhibitörler metal yüzeyinde film oluşturarak korozyonu
yavaşlatmaktadırlar. Ayrıca molibdat, tungstat gibi anodik inhibitörler, pasif filmin hasar görmesi ile
oluşan metasatable çukurcukların süratle onarılmasını sağlarlar.
Bu çalışmada 3-Amino-5-metiltiyo-1H-1,2,4-triazol (AMTA) organik bileşiğinin, sodyum molibdat
ile uygun kombinasyonu yapılarak %3 NaCl çözeltisi içinde 304 çeliğinin korozyonuna karşı inhibisyon
etkinlikleri incelenmiştir. Triazol türevlerinin metal üzerinde oluşturduğu adsorpsiyon tabakası agresif
iyonların yüzeye ulaşmasını önlerken, molibdat katkısı başlangıç aşamasındaki çukurcukların tamir
edilmesini sağlamaktadır. Metal yüzeyinde oluşan koruyucu tabakanın dayanımı elektrokimyasal
teknikler ve yüzey analiz yöntemleriyle araştırılmıştır.
Anahtar Kelimeler: 304 çelik, çukurcuk korozyonu, sodyum molibdat, 3-Amino-5-metiltiyo-1H-1,2,4-triazol.
TEŞEKKÜR
Yazar çalışmaya sağladığı destekten dolayı ÇÜBAP (Çukurova Üniversitesi Rektörlüğü Bilimsel
Araştırma Projeleri Koordinasyon Birimi, FBA-2018-10725)’a teşekkür eder.
KAYNAKLAR
[1]. G.O. Ilevbare, G.T. Burstein, The inhibition of pitting corrosion of stainless steels by chromate and
molybdate ions. Corrosion Science 45 (2003) 1545-1569.
[2]. S.A.M. Refaey, F.Taha, A.M. Abd El-Malak, Inhibition of stainless steel pitting corrosion in acidic
medium by 2- mercaptobenzoxazole. Applied Surface Science 236 (2004) 175-185.
[3]. M.A. Deyab, S.S. Abd El-Rehim, Inhibitory effect of tungstate, molybdate and nitrite ions on the carbon
steel pitting corrosion in alkaline formation water containing Cl- ion. Electrochimica Acta 53 (2007) 1754-
1760.
[4]. M. Guzman, R. Lara, Inhibition pitting corrosion of A-890-1B stainless steel in NaCl solution by 5-amino-
1,3,4-thiadiazole-2-thiol. International Journal of Electrochemical Science 9 (2014) 3491-3500.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 533 614 06 09
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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TİTANYUM BİYOMALZEMELERİN TRİBOKOROZYON ÖZELLİKLERİNİN
ARAŞTIRILMASI
Ebru Emine ŞÜKÜROĞLU*1, Süleyman ŞÜKÜROĞLU2, Yaşar TOTİK3, İhsan EFEOĞLU3, Ayşenur
ARMAĞAN4
1Gümüşhane Üniversitesi, Makine Mühendisliği Bölümü, GÜMÜŞHANE / TÜRKİYE 2 Gümüşhane Üniversitesi, İş Sağlığı ve Güvenliği Bölümü, GÜMÜŞHANE / TÜRKİYE
3Atatürk Üniversitesi, Makine Mühendisliği Bölümü, ERZURUM / TÜRKİYE 4 Gümüşhane Üniversitesi, Biyoteknoloji Anabilim Dalı, GÜMÜŞHANE / TÜRKİYE
Titanyum ve alaşımları sahip oldukları mükemmel mekanik özelliklerden dolayı sanayi ve
endüstrinin hemen hemen tüm alalarında kullanılmaktadır. Biyomalzeme olarak ise vücut içerisinde
implante edilebilmektedir. Ancak yüzeylerinde bulunan pasif oksit tabakası aşırı agrasif ortamlarda bu
malzemeyi koruyamaz ve hızla korozyona uğramasına sebep olmaktadır. Bu dezavantajının minimize
edilmesi adına yüzey işlemleri uygulanabilmektedir. Son yıllarda özellikle hafif malzemeler üzerine
Mikro ark oksidasyon (MAO) yöntemiyle büyütülen oksit tabakalar bu malzemeler üzerinde de
büyütülmekte ve onları korozyon, aşınma ve bu iki mekanizmanın sinerjisi olan tribokorozyon
mekanizmasına karşı korumaktadır. Bu çalışmada Ti6Al4V alaşımı üzerine MAO yöntemiyle büyütülen
oksit tabakasının vücut sıvıları içerisindeki tribokorozyon özellikleri incelenmiş ve büyütülen kaplamanın
etkisi vurgulanmıştır.
Anahtar Kelimeler: Biyomalzeme, MAO yöntemi, Korozyon, Tribokorozyon ve Aşınma.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 533 243 22 21- 0456 233 10 00 (1642)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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TİTANYUM ALAŞIMLARININ DLC KAPLAMA SONRASI TRİBOKOROZYON
ÖZELLİKLERİNİN İNCELENMESİ
Süleyman ŞÜKÜROĞLU*1, Ebru Emine ŞÜKÜROĞLU2, Yaşar TOTİK3, İhsan EFEOĞLU3, Ayşenur
ARMAĞAN4
1Gümüşhane Üniversitesi, İş Sağlığı ve Güvenliği Bölümü, GÜMÜŞHANE / TÜRKİYE 2 Gümüşhane Üniversitesi, Makine Mühendisliği Bölümü, GÜMÜŞHANE / TÜRKİYE
3Atatürk Üniversitesi, Makine Mühendisliği Bölümü, ERZURUM / TÜRKİYE 4 Gümüşhane Üniversitesi, Biyoteknoloji Anabilim Dalı, GÜMÜŞHANE / TÜRKİYE
Titanyum ve alaşımlarının, sahip oldukları düşük ağırlık ve yüksek mukavemet onların gerek
endüstriyel alanda gerekse dekoratif uygulamalar gibi birçok alanda kullanımını giderek artırmaktadır.
Bununla birlikte bu alaşımların aşınma ve korozyona karşı zayıf yüzey özellikleri göstermeleri onların
agresif alanlardaki kullanımını sınırlandırmaktadır.
Günümüz şartları ve teknolojisinin bir gereksinimi olarak; ağır şartlar altında çalışan makine
elemanlarının sürtünme ve aşınmaya dirençlerini daha da artırılması ihtiyacı duyulmuştur. Bu bağlamda
ise DLC (elmas benzeri karbon) gibi yeni tür kaplamaların gelişmesi ve sanayide uygulamaya girmesi söz
konusu olmuştur.
Bu çalışmada ise Ti6Al4V alaşımı üzerine CFUBMS (kapalı alan manyetik alanda sıçratma)
yöntemi ile Ti-DLC kaplaması büyütülmüştür. DLC kaplanmış Ti6Al4V alaşımlarının yapısal, mekanik,
aşınma, korozyon ve tribokorozyon davranışları SEM, XRD, Pin-on-Disk, potansiyostat ve çizme test
cihazları kullanılarak analiz edilmiştir.
Anahtar Kelimeler: DLC kaplamalar, Ti 6Al4V alaşımı, tribokorozyon.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 533 243 22 21- 0456 233 10 00 (1642)
XVth International Corrosion Symposium
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S26
630 KALİTE PASLANMAZ ÇELİĞİN ANTİADHESİV ÖZELLİKLERİNE
YÜZEY MORFOLOJİSİNİN ETKİSİ
Simge ARKAN*1, 2, Nurhan CANSEVER3, Esra İLHAN SUNGUR2 1İstanbul Üniversitesi, Fen Fakültesi, Biyoloji Bölümü, Vezneciler / İSTANBUL / TÜRKİYE
2İstanbul Bilim Üniversitesi, Sağlık Hizmetleri Meslek Yüksekokulu, Şişli / İSTANBUL / TÜRKİYE
3Yıldız Teknik Üniversitesi, Kimya-Metalurji Fakültesi, Metalurji ve Malzeme Mühendisliği Bölümü, Esenler /
İSTANBUL / TÜRKİYE
Birçok yerde geniş kullanım alanına sahip olan paslanmaz çeliklerin yüzeylerinin ıslanabilme
özelliklerini değiştirerek onlara fonksiyonel özellik kazandırmak, son yıllarda çok yaygınlaşmıştır.
Özellikle implant malzemelerde, doku-protez arayüz stabilitesinde yüzey topografisinin önemli
olduğunun belirlenmesi, bu konudaki çalışmaları arttırmıştır. Yüzey topografisini istenilen yönde
değiştirerek ortamdaki mikroorganizmaların yüzeye yapışma ve yapışamama kabiliyetleri de
geliştirilmektedir. Lazer yüzey tekstürleme, yüzey ıslanabilirliğinin modifikasyonu için yeni kullanılmaya
başlayan bir teknik olup, farklı mikro/nano ölçekli yüzey yapılarının oluşturulmasına olanak
sağlamaktadır.
630 kalite paslanmaz çelikler, cerrahi makas üretiminde kullanılmaktadır. Cerrahi operasyonlar
sırasında, uzun süre vücut sıvılarıyla temas halinde bulunan kontamine tıbbi cihazlar ve/veya cerrahi
aletler ile bu materyallerin yüzeylerine tutunan mikroorganizmalar arasındaki etkileşimler, bireyler için
ciddi enfeksiyon riski taşımaktadırlar. Cerrahi operasyonlarda kullanılan cihaz ve aletlerin yüzeylerinin
kontaminasyonunda yaygın olarak rapor edilen bakterilerden Escherichia coli, insan vücudu veya
hayvanlar için her zaman zararlı olmasa da, virülans faktörleri sebebiyle çeşitli enfeksiyonlara yol
açabilmektedir [1, 2]. Bu nedenledir ki son yıllarda, cerrahi aletlerde tutunmayı engelleyici anti-bakteriyel
yüzey özelliklerine sahip metallerin kullanımına odaklanan çalışmalar artmıştır. Yapılan araştırmalar,
mikron, mikronaltı ve nano özellikler ile yapılandırılan yüzeylerin, aynı ortamdaki pürüzsüz yüzeyi ile
karşılaştırıldığında %90'a varan oranlarda bakteri yapışmasını önemli ölçüde azalttığı bildirilmiştir [3].
Bu çalışmada, lazer ile desen kazandırılmış 630 kalite paslanmaz çeliğin yüzeyine (LY), E. coli
bakterisinin tutunma yeteneği incelenmiş ve lazerle işlem görmemiş düz yüzey (DY) ile karşılaştırması
yapılmıştır. LY’nin ıslatma açısı sesil damla yöntemi ile ölçülmüş ve taramalı elektron mikroskobu
(SEM) ile incelenmiştir. Bakterinin yüzeylerle ilişkilerinin araştırılması amacıyla, hem LY hem de DY
kuponlar laboratuvar ölçekli bir test sisteminde 48 saat boyunca E. coli kültürüne maruz bırakılmıştır. LY
ve DY kuponlardan elde edilen biyofilm tabakalarından E. coli sayımı yapılmış ve hücre dışı polimerik
madde (EPS) içeriğindeki toplam karbonhidrat miktarı değerlendirilmiştir. LY ve DY kuponların
yüzeylerindeki biyofilm oluşumlarındaki farklılıklar SEM ile araştırılmıştır. Ayrıca, metalin korozyon
davranışı potansiyodinamik eğriler ile incelenmiştir.
* Simge ARKAN
E-Posta: [email protected]
Telefon: +90 212 455 5700 (15072)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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Deney sonucunda E. coli’nin, LY kuponlarına, DY kuponlarından daha geç tutunduğu ve sesil
bakteri sayısının daha düşük olduğu belirlenmiştir. Ayrıca, LY kuponlarındaki karbonhidrat miktarının
DY kuponlarından anlamlı derecede daha yüksek olduğu saptanmıştır (p <0.01). Aynı zamanda SEM
mikrograflarında, LY kuponların yüzeyinde daha farklı bir tabakalaşmanın olduğu gözlenmiştir. Bu
veriler, bakterinin hidrofobik yüzeye tutunabilmek için daha fazla EPS salgıladığının ve strese bağlı
olarak tabakalaştığının bir göstergesi olarak değerlendirilebilmektedir.
Anahtar Kelimeler: 630 paslanmaz çelik, antiadhesiv yüzey, lazer desenleme, E. coli
TEŞEKKÜR
Bu çalışma, İstanbul Üniversitesi Bilimsel Araştırma Projeleri Birimi (Proje numarası: 25621)
tarafından desteklenmiştir.
KAYNAKLAR
[1]. C. J. Sanchez, K. Mende, M. L. Beckius, K. S. Akers, D. R. Romano, J. C. Wenke ve C. K. Murray,
“Biofilm formation by clinical isolates and the implications in chronic infections”, BMC Infectious
Diseases, vol. 13, no. 47, 2013.
[2]. L. C. Xu ve C. A. Siedlecki, “Submicron-textured biomaterial surface reduces staphylococcal bacterial
adhesion and biofilm formation” Acta Biomaterialia, vol. 8, no. 1, pp. 72-81, 2012.
[3]. J. B. Kaper, J. P. Nataro ve H. L. T. Mobley, “Pathogenic Escherichia coli”, Nature Reviews
Microbiology, vol. 2, no. 2, pp. 123-140, 2004.
XVth International Corrosion Symposium
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S27
MICROBIOLOGICALLY INDUCED CORROSION BEHAVIOR OF N-80 STEEL
BY GRAVIMETRIC METHOD
Duygu ARSLAN*1, Nurhan CANSEVER2, Esra ILHAN-SUNGUR1 1Istanbul University, Faculty of Science, Department of Biology, 34134 Vezneciler, ISTANBUL/
TURKEY. 2Yıldız Technical University, Faculty of Chemistry-Metallurgy, Metallurgical and Materials Engineering
Department, 34210 Esenler, ISTANBUL/TURKEY
Several microbial communities with diverse metabolic activities have been found to live
underground, including a large number of petroleum deposits. Microorganisms found in petroleum
reservoirs can cause microbiologically induced corrosion (MIC) by inducing localized changes in
aqueous media (such as changing electrolyte concentration, components, pH and oxygen concentration).
MIC is known to cause corrosion of oil pipelines and storage tanks leading to serious economic loses. It
has been reported that about 20% of all corrosion problems in the oil and gas industry are formed by
microorganisms.
It was aimed to detect microbiological corrosion behavior of N80 steel, which is often used as
tubing material in oil wells, in produced water by weight loss method. In order to detect MIC, two
separate laboratory scale systems were established, one for testing and the other for control. In the test
system, N80 steel coupons were exposed to the produced water taken from Adıyaman oil field over 120 d.
The control system was established with sterile produced water simultaneously with the test system. Both
of the systems were set up in duplicate. For the weight loss measurement, the coupons were removed
from the systems at specific time intervals and the weight loss was calculated. The surface of coupons
was investigated by scanning electron microscopy (SEM).
The results indicate that N-80 steel was microbiologically corroded. As matter of fact, SEM
photographs validated the presence of microorganisms among the corrosion products.
Key Words: N80 mild steel, Microbiologically induced corrosion (MIC), Weight loss measurements.
ACKNOWLEDGMENT
This study was supported by Research Fund of Istanbul University (28699).
REFERENCES
[1]. S.D. Zhu, A.Q. Fu, J. Miao, Z.F. Yin, G.S. Zhou, J.F. Wei, “CORROSION OF N80 CARBON STEEL IN
OIL FIELD FORMATION WATER CONTAINING CO2 IN THE ABSENCE AND PRESENCE OF
ACETIC ACID,” Corrosion Science, vol. 53, pp. 3156–3165, 2011.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 554 942 59 26
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S28
2,4-DIAMINO-6- PHENYL-1,3,5 TRIAZINE AS EFFICIENT CORROSION
INHIBITOR FOR MILD STEEL IN HCl SOLUTION
Serap TOPRAK DÖŞLÜ*1,2 1Mardin Artuklu University, School of Health, TR- 47100, Mardin / TURKEY
2Mardin Artuklu University, Central Research Laboratory, TR- 47100, Mardin / TURKEY
Mild steel is an illustrious material used in different industries and highly predisposed to corrosion
in acid medium. As a result the biggest problem that we face in using of these kinds of materials is
corrosion. Inhibitor application is both economical method and one of the most practical ways [1-4].
Electrochemical measurements were performed in 0.5 mol L-1 HCI solution in the inhibitor free
and in the presence of various 2,4-Diamino-6- Phenyl-1,3,5 triazine (DPT) concentrations. The different
concentrations of inhibitor were obtained by diluting the correct amounts of this solution to obtain 10.0,
5.0, 1.0, and 0.5 mmol L-1 solutions. Corrosion tests were performed in a three-electrode cell closed to air
under stagnant conditions at 25○C, which was controlled by a thermostat. An Ag/AgCl electrode was
used as a reference electrode, along with a platinum sheet as a counter electrode.
In the present work, the corrosion inhibition efficiency of a newly DPT, on the mild steel in
hydrochloric acid solution was investigated utilizing linear polarization resistance, electrochemical
techniques and SEM method. DPT exhibits good inhibitive properties for mild steel corrosion in 0.5 M
HCl solution and the efficiency of inhibition increased with increasing inhibitor concentration. The results
indicated that DPT had good inhibition efficiency.
Figure 1. 2,4-Diamino-6- Phenyl-1,3,5 triazine
Key Words: Corrosion inhibitor; Electrochemical techniques; Mild Steel; Adsorption.
REFERENCES [1]. M. Erbil, Corrosion Inhibitors, SEGEM Press, Ankara, 1984.
[2]. R. Yıldız., “An electrochemical and theoretical evaluation of 4,6-diamino-2-pyrimidinethiol as a
corrosion inhibitor for mild steel in HCl solutions,” Corrosion Science, vol. 90, pp.544-553, 2015.
[3]. Y. Feng, K. S. Slow, W. K. Teo, and A. K. Hsieh, “The synergistic effects of propargyl alcohol and
potassium iodide on the inhibition of mild steel in 0.5 M sulfuric acid solution,” Corrosion Science, vol.
41, pp. 829–852, 1999.
[4]. R.Yıldız, T.Doğan, İ.Dehri, “Evaluation of Corrosion Inhibition of Mild Steel in 0.1 M HCl by 4-Amino-
3-Hydroxynaphthalene-1-Sulphonic Acid,” Corrosion Science, vol. 85, pp. 215-221, 2014.
[5]. "15th International Corrosion Symposium (KORSEM'18) Main Page", Korsem18, 2018. [Online].
Avaible: http://korsem18.mku.edu.tr. [Accessed: 06- Feb- 2018].
* Corresponding Author
E-Mail: [email protected]
Phone: +90 482 212 1395 (7251)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S29
ELECTROCHEMICAL BEHAVIOUR OF POLY (INDOLE-CO-METHYL
ACRYLATE) COATING ON STAINLESS STEEL
Serap TOPRAK DÖŞLÜ*1, Reşit YILDIZ2, İlyas DEHRI3 1Mardin Artuklu University, School of Health, Department of Nutrition and Dietetics, Mardin, Turkey
2Mardin Artuklu University, School of Health, Nursing Department, 47100, Mardin, Türkiye
3Çukurova University, Science&Letter Faculty, Chem. Dept., 01330, Adana, Turkey
Stainless steel (AISI 304) is easily accessible, easily shaped and easy to produce. These advantages
allow the AISI 304 steel to be used in a wide variety of applications. For this reason, it is the most
commonly used type of stainless steel in the world. From the food industry to the petroleum industry,
from kitchenware to heat exchangers, it has many uses. However, like other stainless steels, it is
inevitable to experience corrosion in AISI 304 stainless steel. There are many methods for corrosion
prevention studies. However, the electrochemical coating method is very highly preferred method of all
of them in recent years, since the desired coating thickness can be achieved and the monomer solutions
can be prepared in desired amounts and in a rapid manner. Polymers prepared by this method are used in
many areas from corrosion protection to rechargeable batteries to prevent corrosion [1].
In this study, poly (indole-co-methyl acrylate) was coated on AISI 304 stainless steel by cyclic
voltammetry technique. Copolymer was synthesized on stainless steel electrode surface in 0.1 M
monomer containing LiClO4-acetonitrile. The copolymer films were characterized by FT-IR, SEM and
EDX. Corrosion performance studies of the electrodes were made in 3.5% NaCl solution.
Figure 1. The red curve of SS in monomer free solution, the blue curve of SS in solution with 9-1 indole-methyl acrylate.
Key Words: Corrosion;Stainless steel; indole.
ACKNOWLEDGMENT
The authors are greatly thankful to Mardin Artuklu Üniversity Research fund for has been
financially supported. (Project Number: MAÜ-BAP-16-SYO-25).
REFERENCES [1]. A. T. Özyılmaz, N. Colak, M.K. Sangün, M. Erbil, B. Yazıcı,” The electrochemical synthesis of poly(aniline-co-o-
anisidine) on copper and their corrosion performances”, Progress in Organic Coatings, vol. 54, no. 4, pp. 353-359,
2005.
* Corresponding Author
E-Mail: [email protected].
Phone: +90 482 212 1395 (7251)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S30
THE USE OF SULFANILAMIDE AS CORROSION INHIBITOR FOR MILD
STEEL PROTECTION
Reşit YILDIZ*1,2, S. TOPRAK DÖŞLÜ1,2, İlyas DEHRİ3 1Mardin Artuklu University, School of Health, TR- 47100, MARDIN / TURKEY
2Mardin Artuklu University, Central Research Laboratory, TR- 47100, MARDIN / TURKEY 3Çukurova University, Science & Letter Faculty, Chem. Dept., 01330, ADANA / TURKEY
Corrosion is one of the main problems of industrial process which used acid solution such as the
pickling and industrial acid cleaning. Corrosion leads to great losses as financial losses and environmental
pollution [1]. Protection of metals such as mild steel (MS) against the corrosion is important for
economic, security and resource conservation. It is impossible to completely prevent corrosion although it
is possible to reduce losses significantly. One of the simplest methods is inhibitors for protection of metal
against the corrosive media. Inhibitors can slow down the reaction between metal and corrosive
environment [2].
Adsorption of an inhibitor on the metal surface can be explained with the different ways. First of
them is defined as electrostatic force that consist of between ionic charges on the adsorbed species and the
electric charge at metal/ solution interface. Others can be indicated as interaction of unshared electron
pairs in the molecule with the metal, interaction π-electrons with the metal and combination of
electrostatic force and interaction of π-electrons with the metal [3, 4].
In this study, the effect of Sulfanilamide was studied on the MS corrosion in 0.5 M HCl by
electrochemical impedance spectroscopy (EIS), linear polarization resistance (LPR) and potentiodynamic
polarization measurements. The electrochemical measurements showed that the inhibitor compounds
form a good protective film on the mild steel surface.
Figure 1. Sulfanilamide
Key Words: Corrosion inhibitor, Electrochemical techniques, Quantum Chemical Calculation, Adsorption.
REFERENCES [1]. R. Yıldız., “An electrochemical and theoretical evaluation of 4,6-diamino-2-pyrimidinethiol as a corrosion
inhibitor for mild steel in HCl solutions,” Corrosion Science, vol. 90, pp.544-553, 2015.
[2]. Y. Feng, K. S. Slow, W. K. Teo, and A. K. Hsieh, “The synergistic effects of propargyl alcohol and
potassium iodide on the inhibition of mild steel in 0.5 M sulfuric acid solution,” Corrosion Science, vol.
41, pp. 829–852, 1999.
[3]. R.Yıldız, T.Doğan, İ.Dehri, “Evaluation of Corrosion Inhibition of Mild Steel in 0.1 M HCl by 4-Amino-3-
Hydroxynaphthalene-1-Sulphonic Acid,” Corrosion Science, vol. 85, pp. 215-221, 2014.
[4]. R.Yıldız, A.Döner, T.Doğan, İ.Dehri, “Experimental studies of 2-pyridinecarbonitrile as corrosion inhibitor
for mild steel in hydrochloric acid solution,” Corrosion Science, vol. 82, pp. 125–132, 2014.
* Corresponding Author
E-Mail: [email protected].
Phone: +90 482 212 1395 (7289)
XVth International Corrosion Symposium
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S31
ADSORPTION AND INHIBITION BEHAVIOR OF 4,6-DIAMINO-2-HYDROXY-
1,3,5-TRIAZINE ON MILD STEEL
Reşit YILDIZ *1, Başak DOĞRU MERT2, İlyas DEHRİ3, Birgül YAZICI3 1Mardin Artuklu University, School of Health, MARDIN / TURKEY
2Adana Science and Technology University, Energy Systems Engineering, ADANA / TURKEY 3Çukurova University, Chemistry Department, ADANA / TURKEY
Corrosion is known as a serious and challenging problem faced by various industries. The organic
inhibitors are widely used for prevention of acid corrosion in various industrial processes such as
pickling, descaling, oil well acidizing, and cleaning, etc. Most well-known acid inhibitors are organic
compounds containing nitrogen (N-heterocyclic) ‚ sulfur‚ oxygen atoms, long carbon chain or aromatic
groups. Using of organic inhibitor is an economical and practical method to prevent the metal corrosion
[1-4].
In this study, effect of 4,6-diamino-2-hydroxy-1,3,5-triazine (DHT) on mild steel corrosion was
studied in 0.5 M HCI solution by means of linear polarization resistance, electrochemical impedance
spectroscopy (EIS) and polarization measurements. The surface morphology of mild steel was examined
with scanning electron microscopy (SEM) in the absence and presence inhibitor. DHT exhibits good
inhibitive properties for mild steel corrosion in 0.5 M HCl solution and the efficiency of inhibition
increased with increasing inhibitor concentration. The adsorption of DHT on the mild steel surface obeys
the Langmuir isotherm.
Figure 1. 4,6-diamino-2-hydroxy-1,3,5-triazine
Key Words: Corrosion inhibitor; Electrochemical techniques; Quantum Chemical Calculation.
ACKNOWLEDGMENT
The authors are thankful to Çukurova University Physicochemistry Research Lab and also Mardin
Artuklu University Research fund for financial support. (Project Number: MAÜ-BAP-16-SYO-06).
REFERENCES
[1]. B. D. Mert, A. O. Yüce, G. Kardaş, B. Yazıcı, “Inhibition effect of 2-amino-4-methylpyridine on mild steel corrosion:
Experimental and theoretical investigation, ” Corrosion Science, Vol. 85, pp. 287–295, 2014.
[2]. R. Yıldız., “An electrochemical and theoretical evaluation of 4,6-diamino-2-pyrimidinethiol as a corrosion inhibitor
for mild steel in HCl solutions,” Corrosion Science, vol. 90, pp.544-553, 2015.
[3]. R. Solmaz, G. Kardas, M. Çulha, B. Yazıcı, M. Erbil, “Investigation of adsorption and inhibitive effect of 2-mercapto
thiazoline on corrosion of mild steel in hydrochloric acid media, ” Electrochim Acta, Vol. 53, pp. 41–52, 2008..
[4]. A. Doner, G. Kardas, “N-aminorhodanine as an effective corrosion inhibitor for mild steel in 0.5 M H2SO4,”
Corrosion Science, vol. 53, pp. 4223–4232, 2011
* Corresponding Author
E-Mail: [email protected].
Phone: +90 482 212 1395 (7289)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S32
YUMUŞAK BETONARME ÇELİĞİNİN BETON BOŞLUK SUYU ve NaCl
ÇÖZELTİSİ İÇERİSİNDE KOROZYON DAVRANIŞININ İNCELENMESİ
Hadaan PEHLİVAN1, Mahmut AYTEKİN*2, 1Kilis 7 Aralık Üniversitesi, İnşaat Mühendisliği Bölümü, Merkez / KİLİS / TÜRKİYE
2Kilis 7 Aralık Üniversitesi, İnşaat Teknolojisi Bölümü, Merkez / KİLİS / TÜRKİYE
Betonarme yapı sistemi, çok farklı çevresel etkiler altında kullanılabilmesi ile birlikte, beton ve
donatı açısından önemli dayanıklılık sorunlarını da beraberinde getirmektedir. Gerek betonun bozulma
sürecinin, gerekse içindeki donatının korozyon sürecinin doğru bir şekilde değerlendirilmesi, yapıların
emniyetli servis ömürleri açısından büyük önem arz etmektedir [1].
Korozyon çelik konstrüksiyonlu tüm yapılarda kaçınılmazdır. Ancak etkileri ve korozyon sonucu
oluşan maddi kayıplar önceden alınacak tedbirlerle en aza indirilebilir. Yatırım maliyetini artıran bu
tedbirler, yapının işletme ömrünü artırarak ve bakım aralığını azaltır ve uzun vadede yapının ekonomik
olmasını sağlar. Korozyondan korunmak için korozyonu tanımak önemlidir. Etkin bir koruma sağlayarak
korozyon kayıplarını mümkün olduğu kadar azaltmak için; mühendislerin korozyonu tanıması,
nedenlerini incelemesi, mevcut denetim tekniklerini bilmesi gerekir [2].
Çalışmada beton boşluk suyu içerisine sırasıyla %0.06; %0.09; %0.12; %0.15’lik
konsantrasyonlarında NaCl eklenerek hazırlanan çözelti içerisinde yumuşak betonarme çeliğinin
korozyon davranışı incelenmiştir. Bu inceleme 3 elektrot yöntemi kullanılarak elektrokimyasal ölçümlerle
yapılmıştır. Bu ölçümler ile yumuşak çelik numunenin açık devre potansiyelleri, Nyquist eğrileri ve Tafel
eğrileri elde edilerek incelenmiş ve sonuçları oransal olarak kıyaslanmıştır.
Beton boşluk suyu ve beton boşluk suyuna farklı konsantrasyonlarda sırasıyla eklenen %0.06;
%0.09; %0.12; %0.15’lik NaCl ‘nin yumuşak betonarme çeliği üzerindeki etkisi elektrokimyasal
yöntemlerle incelendiğinde; beton boşluk suyu içerisindeki NaCl miktarı arttıkça çeliğinde korozyon
akım yoğunluğunun da arttığı görülmüştür.
Anahtar Kelimeler: Beton, Beton boşluk suyu, Korozyon.
KAYNAKLAR [1]. H. Yiğiter, “Betonarme Donatısında Klorid Korozyonu Gelişiminin Elektrokimyasal Yöntemlerle
Belirlenmesi.” Doktora Tezi, Dokuz Eylül Üniversitesi, Fen Bilimleri Enstitüsü, İzmir, 2008.
[2]. M. A. Kaftan, “Çelik Yapılarda Korozyon Oluşumu ve Korozyondan Korunma Yöntemlerinin Maliyet
Açısından Karşılaştırılması.” Yüksek Lisans Tezi, Pamukkale Üniversitesi, Fen Bilimleri Enstitüsü,
Denizli, 2006.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 348 814 26 66 (1628) – 0506 555 12 41
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S33
ANALYTICAL STUDY ON THE EFFECT OF CORROSION TO THE
CONSTRUCTION PERFORMANCE
Mustafa KOÇER *1, Murat ÖZTÜRK1, A. Raif BOĞA2 1Selcuk University, Engineering Faculty, Department of Civil Engineering, KONYA / TURKEY
2Afyon Kocatepe University, Engineering Faculty, Department of Civil Engineering,
AFYONKARAHİSAR / TURKEY
Corrosion, is one of the most important factor to achieve in completing the service life of reinforced
concrete structures, also cause significant losses in energy damping capacities of structures. This loss is
related with corrosion level of structure. Depending on the level of corrosion, cracks in the concrete cause
significant reductions in concrete strength and the adherence between concrete and reinforcement.
Therefore, it is very important to detect the loss in the strength and stiffness of the structures for the
structure close to end of its services life. In this study, the reinforced concrete column designed in ½
geometrical scale was subjected to accelerated corrosion test for 26.5 days under 1 ampere constant
current (Figure 1). As a result of the experiment, weight loss and strength reductions was obtained. Loss
of strength in reinforcement due to corrosion damage was obtained with experimental procedure. Loss of
cross section and reduction of compressive strength of concrete were obtained with empirical formulas in
the literature [1]. Thanks to this data, 3 different scenarios applied on a sample building in Hatay
province. Static pushover analyzes of the sample building designed in accordance with the regulations
were carried out with Sap 2000 program under the specified corrosion scenarios . The load-displacement
curves obtained by the scenarios are compared with the curves of the reference building. As a result of the
comparisons, it was observed that corrosion damage caused significant loss in horizontal load carrying
capacity of the building (Figure 2). The corrosion scenarios show that corrosion in columns or beams
changes collapse modes of the structure.
Figure 1. Electrolysis cell diagram of the column sample Figure 2. Static pushover curves for corrosion scenarios
Key Words: Corrosion, Static Pushover Analysis, Accelerated Corrosion, Reinforced Concrete Column.
REFERENCES [1]. Yuksel, Isa, and Seda Coskan. "EARTHQUAKE RESPONSE OF REİNFORCED CONCRETE FRAME
STRUCTURES SUBJECTED TO REBAR CORROSİON." Earthquakes and Structures 5.3 (2013): 321-341.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 3322232016
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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TANE İNCELTİCİ (TİB) VE MODİFİYE EDİCİ (SR) İLAVESİNİN ETİAL 177
ALÜMİNYUM DÖKÜM ALAŞIMININ KOROZYON DİRENCİNE ETKİSİNİN
İNCELENMESİ
Recep ÇATAR*1, Murat ÇOLAK1 1Bayburt Üniversitesi, Makine Mühendisliği Bölümü, BAYBURT / TÜRKİYE
Alüminyum döküm alaşımları yüksek korozyon dayanımı, yüksek termal iletkenlik, iyi
işlenebilirlik süneklik gibi birçok avantajlı özelliği sahip olmasından dolayı birçok endüstriyel alanda
kullanılmaktadır. Ancak gelişen teknoloji ve artan kalite beklentilerine bağlı olarak alüminyum döküm
alaşımlarının çeşitli özelliklerinin geliştirilmesi gerekmektedir. Bu kapsamda dökümhaneler alaşımlara
tane inceltici (TiB), Modifiye edici (Sr) ilavesi uygulamaları oldukça yaygındır. Bu çalışmada özellikle
yağmur ve deniz suyu gibi oksidasyona açık korozif ortamlarda yaygınca kullanım bulan 3xxx serisi Al-
Si alaşımlarından Etial 177 alüminyum alaşımına TİB ve Sr ilavesinin korozyon özelliklerine etkisi
incelenmiştir. Çalışmada Etial 177 alaşımına ilavesiz olarak, %0,2 Ti etki edecek şekilde AL5Ti1B
alaşımı ilavesi ve %0,15 Sr etki edecek şekilde Al10Sr alaşımı ilavesi ile kum kalıplara dökülmüştür.
Elde edilen numunelerin %3,5 NaCl çözeltisindeki elektrokimyasal davranışları potansiyodinamik
polarizasyon ve elektrokimyasal empedans spektroskopisi yöntemleri ile araştırılmıştır. Ayrıca
spektrometro ile kimyasal bileşim belirlenmiş ve mikro yapı görüntüleri SEM’de incelenmiştir. Sonuçlar
incelendiğinde alaşımda silisyum morfolojisinin değişimine bağlı olarak tane inceltici ve modifiye edici
master alaşım ilavelerinin korozyon direncini artırdığı tespit edilmiştir.
Anahtar Kelimeler: Al-Si döküm alaşımı, Etial 177, Korozyon, Tane İnceltme, Modifikasyon.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 458 211 1177 (1664)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S35
SURFACE CORROSION OF AUSTENITIC STAINLESS STEEL IN THE
CONTAMINATED PHOSPHORIC ACID
Y. Kerroum*1, A. Guenbour1, A. Bellaouchou1, M. Tabyaoui1 1Mohammed V University, Chemistry Department, Rabat / Rabat / MOROCCO
The phosphoric acid manufacturing is an essential industry for many application domains. The
stainless steels are widely used in this industry for their good properties against the destructive
environment, but the presence of various impurities as halides increase the corrosion of the material [1-2].
In this sense, the investigation of austenitic stainless steel corrosion behavior was evaluated in the
presence of the fluoride ions.
This research is carried out by the use of stationary and transient electrochemical methods, and
Mott-Schottky analysis. The electrochemical methods revealed a change in the anodic parameters and the
protection of the material was provided by the formation of inner and outer layers become less protecting.
The curves of the Mott-Schottky analysis explained that in the presence of fluoride ions, the
semiconductor of the barrier film consists of an n-type (Figure 1).
Figure 1. The Mott-Schottky plots of passive films formed on stainless steel in polluted phosphoric acid solution
without and with the fluoride ions.
Regarding the Mott-Schottky diagram, the addition of 2 % of fluoride ions decreases the
capacitance values and exhibits a disappearance of p-type capacitance response.
Key Words: Corrosion, phosphoric acid, stainless steels, fluoride ions, semiconductor film.
REFERENCES [1]. M. Deyab, “Effect of Halides Ions and Temperature on the Electrochemical Behavior and Corrosion of
Carbon Steel in Organic Acid,” Austin Chem. Eng., vol. 1, no. 2, p. 6, 204AD.
[2]. A. ALON, J. YAHALOM, and M. SCHORR, “Influence of Halides in Phosphoric Acid on the Corrosion
Behavior of Stainless Steels,” CORROSION, vol. 31, no. 9, pp. 315–319, Sep. 1975.
* Corresponding Author
E-Mail: [email protected]
Phone:
-600 -400 -200 0 200 400 600 800
0
2
4
6
8
10
(C-2 / 1
09)
/ F
-2cm
4
E (mV/SCE)
Blank
2% HF
XVth International Corrosion Symposium
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S36
CORROSION BEHAVIOR OF DUAL-PHASE 600 AND 800 STEELS IN %3.5
NaCl ENVİRONMENT
Nuri SEN1, Hüsnü GERENGI1, İlyas UYGUR*1, Ertuğrul KAYA1 1Düzce University, Engineering Faculty, Corrosion Research Laboratory, DUZCE / TURKEY
Improved engine efficiency, weight reduction, minimized frictional losses and renewable energy
use in the automotive and transport industries can have a significant effect on CO2 and NOx emissions.
One way of achieving a lighter vehicle by using Ultra High Strength Steels (UHSS) in vehicle body
structures there are lower in thickness or by using lightweight materials such as aluminium, magnesium
or polymer matrix composites. Some UHSS steels like DP 600 and DP 800 are often used for car bodies,
LPG tanks, door beams, reinforcement components, crash structures and longitudinal cross members as
well as for light weight seat structures in cars and trains [1-3].
In this study, corrosion properties of dual-phase 600 and 800 steels in a 3.5% NaCl environment
were evaluated using Electrochemical Impedance Spectroscopy (EIS) and weight loss methods. Although
the samples were quite similar to each other in their compositions it was observed that the very small
differences had changed the corrosion mechanism. For this reason, the calculated charge transfer
resistance (Rct) of the DP 800 in 3.5% NaCl environment was 51% greater than that of the DP 600
sample. This finding was confirmed by weight loss method results and SEM-EDAX analysis.
Figure 1. EDAX results of DP 600 and 800 steel samples after EIS measurements
Anahtar Kelimeler: Corrosion, Dual-phase steel, NaCl.
KAYNAKLAR [1]. S. Keeler, M. Kimchi, and P. J. Mooney, “Advanced High-Strength Steels Aplication Guidelines Version 6.0,” World
Auto Steel, pp. 1-314, 2017.
[2]. J. Venezuela, J. Blanch, A. Zulkiply, Q. Liu, Q. Zhou, M. Zhang, and A. Atrens, “Further study of the hydrogen
embrittlement of martensitic advanced high-strength steel in simulated auto service conditions,” Corrosion Science,
vol. 135, pp. 120-135, 2018.
[3]. Q. Liu, Q. Zhou, J. Venezuela, M. Zhang, and A. Atrens, “Hydrogen influence on some advanced high-strength
steels,” Corrosion Science., vol. 125, pp. 114–138, 2017.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 380 542 1100 (1925)
XVth International Corrosion Symposium
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S37
FARKLI HALAT TİPLERİNİN KOROZYON HIZLARININ TAFEL
EKSTRAPOLASYON YÖNTEMİ İLE DENEYSEL OLARAK ELDE EDİLMESİ
Haşim Fırat KARASU*1, Mine DEMİRSOY1 1Dokuz Eylül Üniversitesi, Makine Mühendisliği Bölümü, Buca / İZMİR / TÜRKİYE
Çelik tel halatlar, yüksek neme ve deniz tuzuna maruz kalan limanlardaki krenlerde, gemilerde, açık
denizlerdeki petrol platformlarında sıklıkla kullanılmaktadır. Eğer bu ortamlarda oluşan korozyonun halat
üzerindeki etkisi göz ardı edilirse yüksek yük taşıma kapasitelerindeki bu elemanlar için ciddi derecede
bir risk faktörü ortaya çıkmaktadır. Bunun önlenmesi için öncelikle korozyonun halatta meydana getirdiği
etkileri iyi bir şekilde gözlemlemek gerekmektedir.
Literatür incelendiğinde yük taşıma halatlarının korozyon davranışlarının incelenmesinde korozyon
sonucunda malzemedeki kayba veya çaptaki azalmaya bakıldığı gibi mekanik deneylere, elektrokimyasal
yöntemlere veya yüzey karakterizasyonuna başvurulmuştur. Bu çalışmada bunlardan elektrokimyasal bir
yöntem olan Tafel eksrapolasyon yöntemi incelenmiştir.
Tafel ekstrapolasyon yönteminde amaç, malzemelerin korozyon hızının gerçeğe en yakın şekilde
belirlenmesidir. Elektrokimyasal korozyon deneyleri için liman ve gemilerde sıklıkla kullanılan Standart,
Seale ve Warrington Seale tipleri belirlenmiş ve bunlar kendir ve çelik özlü olmak üzere ayrı ayrı
incelenmiştir. Solüsyon olarak %3,5 NaCl çözeltisi ve üçlü elektrot sistemi kullanılarak hazırlanan
deneyler sonucunda 6 farklı halatın Tafel eğrileri bulunarak buradan korozyon akım yoğunluğu (Icorr),
korozyon potansiyeli (Ecorr) ve korozyon hızı değerleri tespit edilmiştir.
Yapılan çalışma ile halatların korozyon hızı değerlerine bağlı olarak korozyon dayanımları
karşılaştırılmıştır. Sonuç olarak, korozyon potansiyelinin yüksek olduğu açık deniz, deniz kenarları gibi
yerlerde kullanılan yük taşıma sistemlerinde kendir ve çelik özlü olarak kullanılması uygun olan halatlar
belirlenmiştir.
Anahtar Kelimeler: yük taşıma halatları, tafel ekstrapolasyon yöntemi, korozyon hızı, üçlü elektrot sistemi.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 232 301 9269
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S38
MICROBIALLY INDUCED CORROSION BY MANGANESE OXIDIZING
BACTERIA
Polen YILMAZ*1, Esra ILHAN-SUNGUR1, Nurhan CANSEVER2 1İstanbul University, Fundamental and Industrial Microbiology, Beyazit / ISTANBUL / TURKEY
2 Yildiz Technical Univesity, Metallurgical and Materials Engineering, Esenler / ISTANBUL / TURKEY
Manganese (Mn) is an abundant transition metal that can be readily transformed into different forms
under physical-chemical conditions and plays important roles in elemental biogeochemical cycles. The
oxidized form of Mn, manganese oxidies, are some of the strongest oxidants naturally found in the
environment. Bacteria and some fungi are known to enzymatically catalyze the oxidation of soluble Mn
to Mn oxide minerals faster than abiotic Mn-oxidization in nature [1]. Recently, gaps in literature on
manganese oxidizing bacteria (MOB), their manganese oxidation mechanisms and the potential corrosion
risk on metalic materials have gained in importance. It was suggested that Mn oxides produced by MOB
promote pitting and crevice corrosion through a combination of electrochemical effects caused by
galvanic coupling between Mn oxide deposits and the metallic surface in industrial water systems such as
water distribution systems of refining plants, cooling water lines of sewage treatment plants and
hydroelectric power plants. It was reported that the most common corrosion issues for hydroelectric
power plants have been seen in the components such as turbine blades, runner rings and wicket gates [2].
As a matter of fact, it was informed that there was severe corrosion problem in wicket gates made
of martenzitic stainless steel in a hydroelectic power plant located in Elazığ/Turkey. Also it was claimed
that MOB were the main reason of this corrosion formation. To validate this prediction, biofilm from
wicket gates` surface and water samples from spiral casing and lake were taken from the hdyroelectic
power plant and, the presence and density of MOB were investigated in the samples.
MOB were detected in all samples which were obtained. The number of the MOB in biofilm and
the water samples from spiral casing and lake were determinated as 5.5x105 cfu/cm2, 5.5x103 cfu/ml and
2.2x103 cfu/ml, respectively. In fact, presence of MOB and detecting them in high number may not be the
evidence of that MOB is the only responsible bacterial group from the present corrosion. As a matter of
fact, during sampling procedure, morphologically dissimilar corrosion products that can belong to other
bacterial groups responsible from corrosion were also observed. Therefore, corrosion effect of MOB on
martensitic stainless steel needs to be detected under standart laboratory conditions.
Key Words: Manganese oxidation bacteria, microbial corrosion, stainless steel, industrial systems
ACKNOWLEDGMENT
This study was supported by the Research Fund of İstanbul University (Project No: 30367).
REFERENCES [1]. B.M. Tebo, J.R. Bargar, BG Clement, et al. Biogenic Manganese Oxides: Properties and Mechanisms of
Formation, Annual Review of Earth and Planetary Sciences, vol. 32, no. 1, pp. 287-328, 2004.
[2]. P. Linhardt, Microbially Influenced Corrosion of Stainless Steel by Manganese Oxidizing
Microorganisms, Materials and Corrosion, vol. 55, no. 3, pp. 158-163, 2004.
* Corresponding Author
E-Mail: [email protected]
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S39
MARINE MICROBIOLOGICALLY INFLUENCED CORROSION (MMIC): AN
OVERVIEW
Douâae OU-YAHIA*1,2, Nurhan CANSEVER3, Saad IBNSOUDA KORAICHI2, Esra ILHAN-
SUNGUR1 1Istanbul University, Faculty of Science, Department of Biology, 34134 Vezneciler, ISTANBUL/ TURKEY
2 Sidi Mohamed Ben Abdellah University, Faculty of Science and Technology Saïss, Laboratory of Microbial
Biotechnology,P.O. Box 2202, FEZ /MOROCCO 3 Yıldız Technical University, Faculty of Chemistry-Metallurgy, Metallurgical and Materials Engineering
Department, 34210 Esenler, ISTANBUL/TURKEY
It is well known that surfaces immersed in natural seawater become colonized by microorganisms
and cause biofilm formation that leads to the modification of local chemistry at the metal interface [1]. It
causes corrosion termed as Microbiologically Influenced Corrosion (MIC) [2], particularly local
corrosion such as pitting corrosion, crevice corrosion and de-alloying corrosion [3].
It has been reported that besides Sulfate Reducing Bacteria (SRB) which are the most bacterial
group involved in Marine Microbiologically Influenced Corrosion (MMIC), sulphur-oxidising bacteria,
iron-oxidising/reducing bacteria, manganese-oxidising bacteria and bacteria secreting organic acids and
exopolymers are also associated with metal corrosion in marine environment using complicated
mechanisms [4].
Thus, this paper provides an overview of the literature that examines the relationships between
these bacterial groups and electrochemical reactions occurring at the metal-environment interface and
implicated in the MMIC processes. Furthermore, as the seawater is considered to be one of the most
complex chemical system, the physico-chemical parameters of seawater ( temperature, dissolved oxygen
content, salinity, water chemistry, pH, time of wetness, high atmospheric contaminants, pollution and
fluid velocity) that are involved in MIMC mechanisms and influence corrosion severity in marine
environment [5] will also be touched upon.
Key Words: Microbiologically Influenced Corrosion, Biofilm, Sulphate Reducing Bacteria, pitting
corrosion, marine corrosion mechanisms
REFERENCES
[1]. S.Chongdar, G. Gunasekaran, and P. Kumar, “CORROSION INHIBITION OF MILD STEEL BY AEROBIC
BIOFILM”. Electrochimica Acta, vol. 50, no. 24, pp. 4655-4665, 2005.
[2]. C. C. Gaylarde, and H. A. Videla , “BIOEXTRACTION AND BIODETERIORTION OF METALS”, Cambridge:
Cambridge University Press, 1995.
[3]. W. B. Beech, and J. Sunner, Curr Opin Biotech, vol. 15, no. 3, pp. 181–186, 2004.
[4]. I. B. Beech, and C. C. Gaylarde, “RECENT ADVANCES IN THE STUDY OF BIOCORROSION – AN
OVERVIEW”, Revista de Microbiologia, vol. 30, pp. 177-190, 1999.
[5]. H. Moller, E.T. Boshoff, and H. Froneman, “THE CORROSION BEHAVIOUR OF A LOW CARBON STEEL IN
NATURAL AND SYNTHETIC SEAWATERS”, The Journal of The South African Institute of Mining and
Metallurgy, vol. 106, pp. 585 – 592, 2006.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 5443 620 963
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S40
GROWTH RATE AND HEAT TREATMENT EFFECT ON THE CORROSION
BEHAVIOR OF A DIRECTIONALLY SOLIDIFIED Al-13wt.% Mg2Si PSEUDO
EUTECTIC ALLOY
Yusuf KAYGISIZ*1, Didem BALUN KAYAN2 1Aksaray University, Electricity and Energy Department, AKSARAY/ TURKEY
2Aksaray University, Chemistry Department, AKSARAY/ TURKEY
The aim of this study was to investigate the effect of the growth rate and heat treatment on the
corrosion behavior of directionally solidified Al–13wt.%Mg2Si pseudo eutectic alloy. The composition of
Al–13wt.%Mg2Si pseudo eutectic alloy was chosen to be Al–8.25wt.%Mg–4.756wt.%Si to the Mg2Si
solid phase within an aluminum matrix (-Al) from its melts. Al–13wt.%Mg2Si pseudo eutectic alloy was
directionally solidified at a constant temperature gradient with different growth rates, 8.3 and 175.0 µm s-
1 by using a Bridgman-type furnace.
The Samples of Al–13wt.%Mg2Si pseudo eutectic alloy were treated at 540oC for 2 h for heat
treatment, followed by quenching in cold water and subsequently aged at 180oC for 4 h (T6 heat
treatment).
The directionally solidified and heat treated samples were removed from the graphite crucible and
typically cut into lengths of 80 mm. After moulded each sample, it was sanded and polished. The polished
samples were etched with 2ml of hydrofluoric acid, 3ml of hydrochloric acid and 5ml of nitric acid in 190
ml of distilled water for 25-30 s in order to reveal their microstructures. The microstructure of the
samples was photographed by a ZEISS Gemini 500 model field emission scanning electron microscopy
(FE-SEM).
The corrosion studies of the samples were investigated by Tafel polarization curves and
electrochemical impedance spectroscopy (EIS) techniques. The all measurements were carried out using
an electrochemical workstation system (Gamry, Interface 1000), and a conventional three-electrode cell
in 3.5% NaCl solution at 25 °C.
Key Word: Aluminum Alloy; Heat Treatment; Corrosion Test; Electrochemical impedance spectroscopy; Tafel
polarization curves.
*Corresponding Author
E-Mail: [email protected]
Phone: +90 543 575 7660
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S41
EXPERIMENTAL AND THEORETICAL STUDIES OF CUMINALDEHYDE AS
GREEN CORROSION INHIBITORS FOR S300 STEEL
R. IDOUHLI*1; Y. KOUMYA1; M. KHADIRI1; A. AITYOUB1; A. ABOUELFIDA1; A. BENYAICH1 1Laboratory of Physical Chemistry of Materials and Environment, University Cadi Ayyad, Faculty of
Science Semlalia, BP 2390 MARRAKECH / MOROCCO
Corrosion processes are responsible for considerable costs. Among the various techniques to stop or
prevent destruction or degradation of metal surface and alloys, the corrosion inhibitor is one of the best
known options of corrosion protection and the most useful in the industry [1,2].The environmental
toxicity of organic and inorganic corrosion inhibitors have encouraged researchers for green corrosion
inhibitors with the economic benefits as they are low cost, biodegradable, without heavy metals [2, 3]. In
addition, they are ecofriendly, ecologically acceptable and renewable source [5]. The present work
proposes the study of the cuminaldehyde as a green inhibitor extracted from the essential oil of cumin
against the corrosion of steel in 1M HCl. This inhibitor has been investigated by using potentiodynamic
polarization and Electrochemical impedance spectroscopy (EIS) techniques with the intention of
determining the corrosion inhibition efficiency. The thermodynamic studies show that the adsorption of
inhibitor on steel was mixed adsorption and exothermic in nature. The adsorption process shows that the
inhibitor follows Langmuir isotherm. The morphological analysis of steel was checked before and after
adding inhibitor by Fourier transform infrared (FTIR) and the changes of contact angles were determined,
scanning electron microscopy (SEM) and the surface composition was analyzed using energy dispersive
X-ray (EDX). This study was completed with theoretical studies using DFT and QSAR..
Key Words: Corrosion, Green Inhibitor, DFT-QSAR, Steel, Adsorption..
REFERENCES [1]. C. G. Dariva and A. F. Galio, Dev. Corros. Prot. 16 (2014).
[2]. R. Idouhli, A. Oukhrib, Y. Koumya, A. Abouelfida, A. Benyaich, and A. Benharref, Corros. Rev. (2018).
[3]. R. Souli, E. Triki, M. Rezrazi, B. Jaouad, A. Derja, and L. Dhouibi, J. Mater. Env. 6, 2729 (2015).
[4]. J. Halambek, K. Berković, and J. Vorkapić-Furač, Mater. Chem. Phys. 137, 788 (2013).
[5]. K. Boumhara, M. Tabyaoui, C. Jama, and F. Bentiss, J. Ind. Eng. Chem. 29, 146 (2015).
* Corresponding Author
E-Mail: [email protected]
Phone: +212 671784699
XVth International Corrosion Symposium
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S42
A COMPARATIVE STUDY ON THE CORROSION BEHAVIOR OF MILD
STEEL AND ALUMINUM ALLOY IN ACIDIC MEDIUM USING GREEN
CORROSION INHIBITOR
A. BERRISSOUL*1, A. DAFALI1, K. CHERRAK1, A. ROMANE2, A. OUARHACH2 1Mohamed the first University, Chemistry Department, Oujda /OUJDA ANGAD/ MOROCCO
2 Cadi Ayyad University, Chemistry Department, Marrakesh / MOROCCO
Steel and aluminum alloys are the two most popular materials used in industries. Each material has
a defined and distinct set of characteristics that make it the right material for the right application.
However, cost and price are not the only characteristics that industrials take into consideration. In fact,
corrosion resistance is one of the most important properties. Therefore, a comparative study on the
corrosion behavior of mild steel and aluminum in hydrochloric acid will be presented in this work. In
order to minimize corrosion rate of those metals in HCL medium, plant extract, as ecofriendly way, is
used in this study to avoid toxicity of organic compounds.[1-2].
Moreover, corrosion inhibition effect of Lavandula marocanna extract was also investigated using
electrochemical measurements. LM Extract was added to the acidic medium in different concentrations
50,100,200,400 ppm.
The main electrochemical method that has been used is electrochemical impedance spectroscopy
method was investigated at 35°C using a potentiostat device controlled by a software. The high inhibition
efficiency is 89% for mild steel in 1M HCl using 400ppm of LM extract. For aluminum alloy used in this
study, the high inhibition efficiency reached 65%. Weight loss method was used to evaluate the
concentration effect and adsorption isotherm of this green inhibitor on the corrosion behavior of both
aluminum and mild steel metal. LM aqueous extract is used as green inhibitor for mild steel and
aluminum corrosion
Figure 1. Lavandula marocanna plant
Key Words: Corrosion; Inhibitor; Mild steel; Hydrochloric acid; Potentiostat; Inhibition efficiency.
REFERENCES [1]. K. Xhanari et al., “Green corrosion inhibitors for aluminium and its alloys: a review.”
[2]. T. Y. Soror, “SAFFRON EXTRACTS AS ENVIRONMENTALLY SAFE CORROSION INHIBITOR
FOR ALUMINIUM DISSOLUTION IN 2M HCl SOLUTION,” Eur. Chem. Bull., vol. 2, no. 4, pp. 191–
196, Jan. 2013.
* Corresponding Author
E-Mail : [email protected]
Phone: +212 671353612
XVth International Corrosion Symposium
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S44
SUSCEPTIBILITY OF ALUMINUM ALLOYS PRODUCED BY DIFFERENT
CASTING TECHNIQUES TO LOCALIZED CORROSION STUDIED BY
ELECTROCHEMICAL NOISE MEASUREMENTS
Levent ORGAN*, Öykü G. ZALOĞLU, Berk H. GAZIOĞLU
Yeditepe University, Chemical Engineering Department, ISTANBUL / TURKEY
Aluminum alloy sheets, AA1050 and AA5005, produced by direct-chill casting (DCC) and hot-
rolling process and the same alloy sheets produced by the twin-roll casting (TRC) are compared for their
susceptibility to localized corrosion by means of electrochemical noise measurements. As a result of
faster solidification, absence of homogenization and significantly less hot working, alloy sheets produced
by the TRC route are known to have structures different than their DCC counterparts [1], [2]. DCC alloys
usually have a more uniform microstructure [3], while the intermetallic particles in the TRC alloys are
generally smaller than those in DCC alloys [2]. Since localized corrosion in aluminum alloys are
generally associated with intermetallic particles [4], the present study was conducted to determine any
differences in susceptibility to localized corrosion of AA1050 and AA5005 produced by the TRC and
DCC.
To determine any differences between the localized corrosion susceptibility of the DCC and TRC
alloys of the same type, electrochemical noise experiments were conducted in naturally aerated 0.1 M and
0.01 M NaCl solutions. Instrumental noise of the measurement set-up was checked as described in the
literature [5]. Electrochemical noise measurements were conducted by the ZRA technique. The galvanic
current between two nominally-identical electrodes were measured. The measurements were done 10
minutes after the immersion for 3 hours to see the differences in the initial corrosion behavior. ZRA
measurements were also performed after 24 hours of immersion of all alloys. The electrochemical noise
data were analyzed with various frequency and time-series analysis methods. The electrochemical noise
measurements revealed differences between TRC and DCC alloys at different exposure times. Key Words: Aluminum Alloy, Localized Corrosion, Electrochemical Noise, Twin-roll Casting, DC casting
ACKNOWLEDGMENT
This study was supported by The Scientific and Technological Research Council of Turkey
(TUBITAK) through Project 315M232.
REFERENCES
[1]. N. S. Barekar and B. K. Dhindaw, “Twin-Roll Casting of Aluminum Alloys – An Overview,” Mater.
Manuf. Process., vol. 29, no. 6, pp. 651–661, Jun. 2014.
[2]. R. E. Sanders, “Continuous Casting for Aluminum Sheet: a Product Perspective,” JOM, vol. 64, no. 2, pp.
291–301, Feb. 2012.
[3]. X. F. Yu, Y. M. Zhao, X. Y. Wen, and T. Zhai, “A study of mechanical isotropy of continuous cast and
direct chill cast AA5182 Al alloys,” Mater. Sci. Eng. A, vol. 394, no. 1–2, pp. 376–384, Mar. 2005.
[4]. G. Frankel, “Pitting corrosion of metals,” J. Electrochem. Soc., vol. 145, no. 6, p. 2186, 1998.
[5]. R. W. Bosch et al., “Reliability of electrochemical noise measurements: Results of round-robin testing on
electrochemical noise,” Electrochim. Acta, vol. 120, pp. 379–389, 2014.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 216 578 0000 (3055)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | 44
BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
S45
SICAK DALDIRMA YÖNTEMİ İLE ALÜMİNYUM KAPLANMIŞ YAPI
ÇELİKLERİNİN KOROZYON ÖZELLİKLERİNİN İNCELENMESİ
Furkan KALAN1, Fadime AKPINAR1, T. Çağrı ŞENOCAK1, K. Vefa EZİRMİK*1 1Atatürk Üniversitesi, Metalurji ve Malzeme Mühendisliği Bölümü, Yakutiye / ERZURUM / TÜRKİYE
Günümüzde korozyon, çelik malzemelerde oluşan en önemli bozunma proseslerinin başında gelmektedir.
Fakat korozyonun çelik üzerinde bırakacağı etkiler ve yol açacağı maddi zararlar önceden alınacak olan
önlemlerle minimuma indirgenebilir. Çelik konstrüksiyonlarda meydana gelen korozyonu ortadan
kaldırmak amacıyla bir takım kaplama prosesleri uygulanmaktadır [1]. Bu prosesler arasında çevresel
koruma, ekonomiklik ve seri üretim için uygunluk faktörleri ve üstün korozyon direnci dikkate
alındığında, sıcak daldırma ile alüminyum kaplama işlemi oldukça pratik ve elverişli bir yöntem olarak
dikkatleri üzerine çekmektedir [2].
Bu çalışmada, düşük korozyon direncine sahip olan genel yapı çeliklerinin yüzeylerine sıcak daldırma
metodu kullanılarak 1XXX, 2XXX ve 5XXX serisi alüminyumla kaplanmıştır. Yüzeyleri hazırlanmış
olan yapı çelikleri, Al/Al alaşımı banyosuna 1,3 ve 5 dakika sürelerde daldırılarak kaplama işlemi
gerçekleştirilmiştir. Kaplama sonucunda çelik yüzeyi ile kaplama arasında intermetalik yapıların oluştuğu
gözlemlenmiştir. Özellikle 1XXX serisi alüminyum kaplamalarda intermetalik yapının kalınlığını ve buna
bağlı olarak kırılganlığını azaltmak amacıyla sıvı alüminyum banyosu içerisine değişen oranlarda metalik
silisyum (Si) ilavesi yapılmıştır. Alüminyumun ve içerisinde ihtiva ettiği alaşım elementlerinin çelik
yüzeyinde oluşturduğu difüzyon tabakasının morfolojisi optik ve taramalı elektron mikroskobu (SEM) ve
X-ışını kırınımı (XRD) cihazları ile incelenmiştir. Alüminyum kaplanmış ve kaplanmamış çelik
numuneler tuzlu su ortamında korozyon testine tabi tutulmuştur. Test sonucunda numunelerin kütle
değişimleri ve metalografik incelemeleri yapılmıştır. Alüminyum kaplanmış çelik numunelerdeki ağırlık
değişimleri ölçülmüş ve önemli bir değişiklik olmadığı belirlenmiştir. Alüminyum kaplanmış çelik
numunelerin tuzlu su ortamında kaplama yapılmamış çeliklere göre korozyona karşı daha yüksek direnç
gösterdiği tespit edilmiştir.
Anahtar Kelimeler: Alüminyum, yapı çeliği, sıcak daldırma, korozyon dayanımı.
KAYNAKLAR
[1]. C.J. Wang and S.M. Chen "THE HIGH-TEMPERATURE OXIDATION BEHAVIOR OF HOT-DIPPING
AL–SI COATING ON LOW CARBON STEEL." Surface and Coatings Technology 200(22): 6601-6605,
2006.
[2]. G.H. Awan and F. U. Hasan "THE MORPHOLOGY OF COATING/SUBSTRATE INTERFACE IN
HOT-DIP-ALUMINIZED STEELS." Materials Science and Engineering, A 472(1): 157-165, 2008.
* Corresponding Author
E-Mail: [email protected]
Telephone: +90 442 231 6040
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | 45
BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
S47
EFFECT OF THIADIAZOLE DERIVATIVE INHIBITOR ON ACID CORROSION
OF MILD STEEL
Gurbet YERLIKAYA1, Abrar AHMAD2, Murat FARSAK3, Gülfeza KARDAŞ*1 1Cukurova University, Chemistry Department, ADANA / TURKEY
2Quaid I Azam University, Chemistry Department, ISLAMABAD / PAKISTAN 3Osmaniye Korkut Ata University, Chemistry Department, OSMANIYE / TURKEY
In industries numbers of corrosion problems mainly arise due to the use of hydrochloric acid (HCl)
for pickling, rescaling and cleaning processes of mild steel surface[1]. No absolute method have been
designed up till now for complete removal of corrosion, but we can take protective measures in order to
control the effect of corrosion. Thus among various methods that have been used for slowing and
monitoring acid corrosion the use of organic inhibitor is the most experienced one [2]. Among these
organic inhibitors, the literature shows that Schiff bases are found to be an as active corrosive inhibitor
for several metals and alloys in acidic media[3]. In the present work, a new sulfur containing Schiff base
(5-(4-(diethylamino)benzylidene)amino)-1,3,4-thiadiazole-2-thiol) (5-DAT) was synthesized. Corrosion
inhibition of S5-DBATT was studied against mild steel in 1.0 M HCl solution using sophisticated
Analytical methods like potentiodynamic polarization, electrochemical impedance spectroscopy, and
linear polarization resistance. Electrochemical impedance spectroscopy results show highest inhibition
efficiency (η%) of 91.8% for 3mM 5-DAT.
Figure 1. Nyquist plot of mild steel in 1.0 M HCl solution in the absence and presence of 5-DATBAt at 298K
Key Words: corrosion inhibitor, mild steel, electrochemical techniques.
ACKNOWLEDGMENT
The authors are greatly thankful to The Scientific and Technological Researh Council of Turkey
(TUBITAK).
REFERENCES [1]. Saha, S. K.; Dutta, A.; Ghosh, P.; Sukul, D.; Banerjee, P., Adsorption and corrosion inhibition effect of
Schiff base molecules on the mild steel surface in 1 M HCl medium: a combined experimental and
theoretical approach. PCCP 2015, 17 (8), 5679-5690.
[2]. Yüce, A. O.; Telli, E.; Mert, B. D.; Kardaş, G., Experimental and quantum chemical studies on corrosion
inhibition effect of 5, 5 diphenyl 2-thiohydantoin on mild steel in HCl solution. J. Mol. Liq. 2016, 218,
384-392.
[3]. Şafak, S.; Duran, B.; Yurt, A.; Türkoğlu, G., Schiff bases as corrosion inhibitor for aluminium in HCl
solution. Corros. Sci. 2012, 54, 251-259
* Corresponding Author
E-Mail: [email protected]
Phone: +90 5053102542
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
S48
SEPİYOLİT KATKILI ÇİMENTO HARÇ NUMUNELERİNİN NaCl ÇÖZELTİSİ
İÇERİSİNDE KOROZYON DAVRANIŞININ POLARİZASYON DİRENCİ
YÖNTEMİ İLE İNCELENMESİ
Hadaan PEHLİVAN1, Mahmut AYTEKİN*2, 1Kilis 7 Aralık Üniversitesi, İnşaat Mühendisliği Bölümü, Merkez / KİLİS / TÜRKİYE
2Kilis 7 Aralık Üniversitesi, İnşaat Teknolojisi Bölümü, Merkez / KİLİS / TÜRKİYE
Beton normal halde betonarme demirleri için hem kimyasal, hem de fiziksel olarak iyi bir koruyucu
ortam oluşturur. Çimento + su reaksiyonu sonucu kalsiyum hidroksit oluşur ve beton oldukça yüksek bir
alkali özellik kazanır. Beton pH derecesinin yüksek oluşu betonarme demiri yüzeylerinde pasif bir oksit
filmi oluşmasına neden olur. Diğer taraftan betonun geçirgenliğinin düşük oluşu, korozyona neden olan
bileşenlerin beton içine girmesini ve betonarme demirleri yüzeyine kadar ulaşmasını güçleştirir. Bir
elektrolit olarak betonun iyonik iletkenliği çok düşüktür. İletkenliğin düşük oluşu betonarme demirleri
yüzeyinde korozyon hücrelerinin gelişmesini güçleştirici bir etki gösterir. Betonarme demirlerinin
korozyonuna genellikle deniz suyu veya deniz atmosferi etkisinde kalan beton yapılarda, klorür tuzlarının
kullanıldığı bazı kimyasal fabrikalarda, karayolu köprüleri ve viyadüklerde rastlanmaktadır [1].
Bu çalışmada, sepiyolit kili katkısının çimento harç özellikleri ve betonarme çeliği korozyonu
üzerine etkileri incelendi. Eskişehir ili Sivrihisar ilçesinde yüzeylenen tabakalardan alınan sepiyolit
kilinin fiziksel ve kimyasal özellikleri araştırıldı. Sepiyolit kili katkısı, CEM I 42,5 R Portland
çimentosuyla ağırlıkça %0, %2.5, %5, %7.5, %10, %12.5 ve %15 oranlarında yer değiştirilmek üzere
kullanılarak silindirik Ø50*100 ebatlarında harç numuneleri üretildi ve üretilen harç numuneleri %3.5
NaCl konsantrasyonuyla hazırlanan suda olgunlaştırıldı.
Harç numuneleri içine gömülü donatı çeliğinin elektrokimyasal korozyon parametrelerinin
belirlenmesinde üç elektrotlu ölçüm yöntemi kullanılmıştır ve voltametrik ölçümler CHI604e programı
ile bilgisayar kontrollü CH Instruments (600E) model potansiyostat cihazı kullanılarak yapılmıştır. Bu
yönteme göre çalışma elektrotu olarak korozyonu ölçülecek betonarme çeliği, karşıt elektrot olarak platin
ve karşılaştırma elektrodu olarak da doygun kalomel elektrot (SCE) kullanıldı. Donatı gömülü harç
numunelere önce korozif ortamdaki bekleme sürelerine bağlı kronoamperometrik ölçümler, polarizasyon
direnci (Rp) gibi tahribatsız elektrokimyasal testler uygulanmıştır.
Bu deneyler sonucunda elde edilen bulgulara ait çeşitli elektrokimyasal parametreler grafik ve
çizelgeler halinde düzenlenerek malzeme korozyon özellikleri karşılaştırılmış ve korozyon mekanizmaları
belirlenmiştir.
145 gün korozif ortamda kalan numunelerden çeşitli günlerde ölçümler alınmış ve bu günlere ait
polarizasyon dirençleri ve korozyon akımları birlikte değerlendirildiğinde %5 sepiyolit ikamesiyle
oluşturulan çimento harç numunesinin korozyona en dirençli koşulları sağladığı görülmüştür. Anahtar Kelimeler: Çimento, Korozyon, Sepiyolit.
KAYNAKLAR
[1]. T. Koç, Ankara - İstanbul Hızlı Tren Projesi (2. Etap), Köseköy- Vezirhan (Kesim-1), 8" Akgıda Doğalgaz
Boru Hattı Koruma Yapısı İşi, Menfez Betonarme Demirleri Korozyonu Önleme ve Koruma Projesi, 2011.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | 47
BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
S49
NiPd ELEKTROKATALİZÖRLERİN ELEKTROLİZ KOŞULLARINDAKİ
KOROZYON DAVRANIŞLARI
Ramazan SOLMAZ*
Bingöl Üniversitesi, Sağlık Bilimleri Fakültesi, İş Sağlığı ve Güvenliği Bölümü, 12000, BİNGÖL / TÜRKİYE
Dünya genelinde kullanılan enerji kaynaklarının büyük çoğunluğunu fosil yakıtlar oluşturmaktadır.
Ancak, rezervlerinin giderek tükenmesi, fiyatlarının sürekli arması, insan ve çevreye olumsuz etkileri gibi
nedenlerle çalışmalar alternatif enerji kaynakları üzerinde yoğunlaşmıştır. Bunların içerisinde hidrojen
gazı geleceğin enerji taşıyıcısı olarak kabul edilen en önemli yakıtlardan biridir. Birçok üretim yöntemi
olmakla birlikte çok miktarda ve en saf hidrojen gazı suyun elektrolizi ile yapılabilmektedir. Hidrojen
üretim reaksiyonunu en iyi katalizleyen metaller Pt, Pd, Ir gibi Pt-grubu metallerdir [1, 2]. Ancak bu
metallerin pahalı olması maliyeti arttırmakta ve pratikte kullanımlarını sınırlamaktadır. Bu
dezavantajların giderilmesi için diğer ucuz geçiş metalleri ile alaşımlarının oluşturularak kullanılmaları
yaygın yöntemlerden bir tanesidir. Bu tür elektrokatalizörlerin geniş yüzey alanına sahip altlıklara
tutturularak kullanılması bir diğer önemli yöntemdir. Daha önceki çalışmalarımızda oldukça hafif, ucuz
ve geniş yüzey alanına sahip karbon keçenin (C) katot yapımında kullanılabileceği önerilmiştir [3].
Bununla birlikte, enerji ve elektroliz sistemlerinde korozyon ile ilgili yeterli çalışmaların yapılmaması son
derece büyük bir eksikliktir. Çünkü oldukça pahalı metallerin korozyona uğramaları verimlerini
düşürmekte ve ömürlerini azaltmaktadır.
Bu çalışmada enerji sistemlerinde elektrot malzemesi olarak kullanılabilecek önceden Ni modifiye
edilmiş C/Ni üzerine çok az miktarda ikili NiPd çöktürülmüş C/Ni-NiPd elektrokatalizörlerin elektroliz
sistemindeki (1 M KOH çözeltisi) korozyon davranışı incelenmiştir. Elektrokatalizörler taramalı elektron
mikroskopu, enerji dağılımlı X ışını spektrospkopisi ve X Işını kırınımı ile karakterize edilmiştir. Bu
amaçla, çok sayıda elektrokimyasal teknik kullanılmıştır. Elde edilen bulgular, elektrokatalizörlerin
özellikle kısa süreli de olsa elektrik kesintilerinin elektroliz sisteminde korozyon dayanımlarının
değiştiğini ve bunun da elektrotun performansına etki edeceğini göstermiştir. Anahtar Kelimeler: Enerji sistemleri, korozyon, elektrokatalizörler.
TEŞEKKÜR
Desteklerinden dolayı Bingöl Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimine
(BÜBAP) ve Bingöl Üniversitesi Merkezi Laboratuvara teşekkür ederiz.
KAYNAKLAR
[1]. P. Paunovic, I. Radev, A.T. Dimitrov, O. Popovski, E.Lefterova, E. Slavcheva, S.H. Jordanov, “New nano-
structured and interactive supported composite electrocatalysts for hydrogen evolution with partially
replaced platinum loading” International Journal of Hydrogen Energy 34, 2866–2873, 2009.
[2]. R. Solmaz, G. Kardaş, “Electrochemical preparation and characterization of C/Ni–NiIr composite
electrodes as novel cathode materials for alkaline water electrolysis” International Journal of Hydrogen
Energy, 38, 2251-2256, 2013.
[3]. J.B. Raoof, R. Ojani, S.A. Esfeden, S.R. Nadimi, “Fabrication of bimetallic CuPt nanoparticles modified
glassy carbon electrode and its catalytic activity toward hydrogen evolution reaction” International Journal
of Hydrogen Energy, 35, 3937–3944, 2010."15. Uluslararası Korozyon Sempozyumu (KORSEM'18) Ana
Sayfası", Korsem18, 2018. [Online]. Avaible: http://korsem18.mku.edu.tr. [Accessed: 06- Feb- 2018].
* Sorumlu Yazar
E-Posta: [email protected]
Telefon:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | 48
BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
S50
METAL ÇÖKTÜRÜLMÜŞ KENDİ KENDİNE BİRİKEN TEK TABAKALI
METİLRODANİN FİLMLER: KOROZYON İNHİBİSYON UYGULAMALARI
Ramazan Solmaz*
Bingöl Üniversitesi, Sağlık Bilimleri Fakültesi, İş Sağlığı ve Güvenliği Bölümü, 12000, BİNGÖL /
TÜRKİYE
Kendi kendine biriken tek tabakalı filmler (SAM) oldukça yoğun, sıkı, iyi düzenlenmiş, ultra ince
organik filmlerdir. Metal yüzeyinde film oluşturma teknikleri arasında sahip oldukları özellikler dolayısı
ile son derece önemli avantajları vardır. Filmlerin çok yaygın kullanılma potansiyelleri olup en
yaygınlarından biri korozyondan korunmadır. Ancak, bu amaçla kullanılan maddelerin çoğu çok pahalı
veya toksittir. İnsan ve çevreye olumsuz etkileri olmayan, sağlıklı yeni filmlerin bu amaçla geliştirilmesi
son derece önemlidir. Rodanin ve türevleri oldukça sağlıklı bileşikler olup antibakteriyel, antiviral,
antimikrobiyal özellikler sahip olup çok sayıda biyokimyasal uygulamaları mevcuttur. Metilrodanin
(MRh) SAM filminin bakırın korozyonuna inhibisyon etkisinin iyi olduğu, ancak film kusurları olduğu
rapor edilmiştir. Filmlerin kalitesinin arttırılması için ilave yöntemler gerekmektedir.
Bu çalışmada etanol içerisinde bakır yüzeyinde MRh-SAM filmleri hazırlanmış ve yüzeyleri metal
çöktürülerek daha da iyileştirilmiştir. Metal modifiye işlemleri elektrokimyasal olarak özel hazırlanmış
kaplama banyolarında elektrokimyasal olarak gerçekleştirilmiştir. Hazırlanan filmler çok sayıda
spektroskopik, mikroskobik ve elektrokimyasal teknik ile karakterize edilmiştir. Filmlerin bakırın
korozyonuna inhibisyon etkileri %3,5 NaCl çözeltisinde elektrokimyasal impedans spektroskopisi, açık
devre potansiyelinin zamanla değişimi, akım-potansiyel eğrileri ve lineer polarizasyon direnci teknikler
ile incelenmiştir. Elektrokimyasal kararlılıkları dönüşümlü voltametri ve kronoamperometri ile
incelenmiştir.
Anahtar Kelimeler: Kendi kendine biriken tek tabakalı filmler, bakır, korozyon, metal çöktürme.
TEŞEKKÜR
MRh-SAM filmleri ile ilgili çalışmalar 115M613 No’lu TÜBİTAK projesi tarafından desteklenmiştir.
Desteklerinden dolayı TÜBİTAK’a, karakterizasyon ölçümleri için Bingöl Üniversitesi Merkezi Laboratuvara ve
Kimya Bölümü’ne teşekkür ederim.
KAYNAKLAR
[1]. E. Kristan Mioč, Z. Hajdari Gretić, H. Otmačić Ćurković, Corros. Sci. 134, 189–198, 2018.
[2]. B.C.C. Contello, D.S. Eggleston, D. Haigh, R.C. Haltiwanger, C.M. Heath, R.M. Hindley, K.R. Jennings,
J.T. Sime, S.R. Woroneicki, J. Chem. Soc. Perkin Trans. 1, 3319, 1994.
[3]. S.Q. Yan, G. Larson, J.Z. Wu, T. Appleby, Y. Ding, R. Hamatake, Z. Hong, NH. Yao, Bioorg. Med.
Chem. Lett. 17, 63 2007.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
Page | 49
BOOK OF ABSTRACTS (http://korsem18.mku.edu.tr/)
S51
CORROSION BEHAVIOR OF SNO2-COATED MILD STEEL IN
HYDROCHLORIC ACID SOLUTION
Sevgi ATEŞ*1, Evrim BARAN2, Birgül YAZICI1 1Çukurova University, Chemistry Department, Balcalı / ADANA / TURKEY
2Kilis 7 Aralık University, Mechanical Engineering Department, KİLİS / TURKEY
The mild steel is an attractive structural material due to its low cost, recyclability, high thermal
conductivity and excellent mechanical strength. But, the corrosion resistance of this material is the most
significant problem [1]. One of the most common methods for extending the life of this material is the
application of protective coatings. SnO2 is one of the most promising metal oxide applied in anti-
corrosion coatings. In this study, SnO2 was synthesized by the sol-gel technique and coated on mild steel
at different coating time (0,15,35 and 45 minutes) by dip-coating method , in order to protect mild steel
against corrosion. The corrosion performances of the uncoated mild steel (Yç) and SnO2 coated mild steel
(Yç-SnO2) were investigated in 0.5 M HCl solution at periodic intervals (2-96 h) by electrochemical
impedance spectroscopy (EIS) and potentiodynamic measurements. The structure and morphology of
electrodes were characterized by field emission scanning electron microscope (FE-SEM), energy-
dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and the contact angle measurements. The
FE-SEM results showed that SnO2 protects the surface against corrosion by forming a protective film on
the surface. The data obtained from the EIS measurements showed that the corrosion resistance of SnO2
coated mild steel increased over time. All parameters reveal that the SnO2 effectively protected on mild
steel against corrosion and reduced its corrosion rate in 0.5 M HCl solution.
Figure 1. The EIS results and SEM images of Yç (a) and Yç-SnO2 (b) obtained in 0.5 M HCl solution after 96 h immersion
time.
Key Words: Mild steel, SnO2, Corrosion, EIS, SEM.
ACKNOWLEDGMENT
The authors thank for financial support of the Scientific and Technological Research Council of
Turkey (TÜBITAK 2211-C program) and Çukurova University Scientific Research Unit (Project No:
FDK-2015-5385).
REFERENCES [1]. O.S.I. Fayomi, A.P.I. Popoola, V.S. Aigbodion, “Investigation on microstructural, anti-corrosion and
mechanical properties of doped Zn–Al–SnO2 metal matrix composite coating on mild steel,1 Journal of
Alloys and Compounds, 623, 328–334, 2015.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 322 338 69 68
0 500 1000 1500 2000
-1000
-500
0
Z'
Z''
15 dk YÇ-SnO2 in 05 M HCl change.2bin.txt30 dk YÇ-SnO2 in 05 M HCl imp2 .txt45 dk YÇ-SnO2 in 05 M HCl imp .txtYÇ in 05 M HCl .txt
Z
Z"
/ Ω
Z"
/ Ω
Z / ohm
5 10 15 20 25
-10
-5
0
Z'
Z''
YÇ in 05 M HCl .txt
Z
(a) (b)
0 dk
15 dk
45 dk 30 dk
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September 26–28, 2018, Hatay Mustafa Kemal University
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S52
KOROZİF ORTAMIN NANO ELYAF KATKILI EPOKSİ İLE YAPIŞTIRILMIŞ
BİNDİRME BAĞLANTILARINDA EKSENEL DARBE DAVRANIŞLARINA
ETKİSİ
Nihat Erdem BERBER*1, Necati ATABERK2, Mürsel EKREM2, Ahmet AVCI 3 1Konya Teknik Üniversitesi, Makine Mühendisliği Bölümü, KONYA / TÜRKİYE
2Necmettin Erbakan Üniversitesi, Makine Mühendisliği Bölümü KONYA / TÜRKİYE 3Necmettin Erbakan Üniversitesi, Biyomedikal Mühendisliği Bölümü KONYA / TÜRKİYE
Gelişen ürün ağı ile birlikte kompozit malzemelerle ilgilenen araştırmacılar hasarlarının çoğunluğu
bağlantı yani eklem bölgelerinden kaynaklı olduğu gözlemlemiştir. Sonuç olarak da çalışma güvenliği
araştırmacıların ilgisini çeken konulardan olmuştur. Geleneksel yöntemlerden uzaklaşıp uygulama
kolaylığı sunan, düşük maliyetli ve hafif olmalarından kaynaklı yapıştırma bağlantıları kullanımı
yaygınlaşmıştır. Epoksi yapıştırıcıların popülerliği mekanik özelliklerinin gelişmesine yol açarak; nano-
kauçuk parçacıkları, karbon nanotüpler, grafen ve gümüş nanoteller, nano-kil, alümina ve silika
nanopartiküller gibi nanoparçacık takviyelerinin uygulamalarının yapılmasını sağlanmıştır.
Çalışma, saf su ortamında şartlandırılmış yapıştırma bağlantılarında N6.6 ile modifiye edilmiş
epoksi yapıştırıcının tek taraflı bindirme bağlantıları hazırlanmış ve eksenel darbe testinin numuneler
üzerindeki etkileri incelenmiştir. Tek taraflı bindirme yoluyla yapıştırılmış bağlantıların eksenel darbe
sonrası etkileşimlerin değerlendirilmesi, mevcut deneysel çalışmanın temel amacı olmuştur. Yapıştırma
işlemlerinin uygulandığı malzemeler; yapıştırılan olarak seçilen Al levha, karşı tarafında karbon elyaf
takviyeli kompozit levha seçilmiştir. Farklı sürelerde saf suda korozif şartlandırılmış numunelere çeşitli
enerji yüklerine sahip eksenel darbeler uygulanmıştır. Böylece numunelerin eksenel darbe sonrası ani
yüklemeye karşı taşıdığı yük incelenmiştir. Modifiye için gerekli naylon 6,6 nano elyaflar elektro-spin
metodu ile üretilmiş ve tek taraflı bindirme bağlantılarının üretiminde kullanılmıştır. Bağlantı yapılmış
numunelerin üretimi tamamlandıktan sonra 0, 1, 7, 14 ve 21 gün süreler ile saf suda şartlandırma
yapılmıştır ve etkileri farklı yükleme koşulları altında eksenel darbe testi yapılarak incelenmiştir. Naylon
6,6 takviyeli yapıştırıcının mekanik özelliklerinin gözlemlenmesi için tek taraflı bindirme bağlantısı
ASTM D1002-10 standardizasyonunda hazırlanmıştır. Epoksi yapıştırıcının özelliklerinin
güçlendirilmesinde kullanılan naylon 6,6 nano elyafların nitelik özellikleri taramalı elektron mikroskopu
(SEM) yardımı ile incelenmiştir.
Anahtar Kelimeler: yapıştırma, naylon 6,6, nanoelyaf, elektro-spin, şartlandırma, saf su, darbe.
TEŞEKKÜR
Bu çalışma Türkiye Bilimsel ve Teknolojik Araştırma Kurumu (TÜBİTAK) tarafından 215M777
numaralı araştırma destek programı projesi ile desteklenmiştir.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 505 461 6618
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S53
YÜKSEK KARBONLU ÇELİK TELİN SOĞUK DEFORMASYONU SIRASINDA
ÇİNKO FOSFAT KAPLAMA İŞLEMİNE ALTERNATİF YENİ NESİL
KAPLAMA YÖNTEMİ
Elvan ARAZ*1, Erkan KARAYİĞİT1 1Güney Çelik Hasır ve Demir Mam. San.Tic. A.Ş / ADANA / TÜRKİYE
Metal yüzeyleri kaplama işlemine tabi tutulmadan önce ön hazırlık basamaklarından geçirilir. Bu
basamaklardan bir tanesi de çinko fosfat kaplamadır. Mevcut proses; basamak sayısının fazla olması,
oluşan çamurlaşmanın bertarafının zor ve yüksek maliyet içermesi, çevreci bir yaklaşım olmaması gibi
dezavantajlara sahiptir. Yapılan çalışma ile çinko fosfat kaplamaya alternatif kaplama olarak
planladığımız bu çalışmada çevreye duyarlı olması açısından stearatlar ile çalışılarak tel üzerindeki
etkileri incelenmiştir. Daldırma yöntemi uygulanarak, farklı pH, süre, sıcaklık ve derişimler de yapılan
çalışmalar sonucu elde edilen kaplamanın çinko fosfat kaplama ile kıyaslaması yapılmıştır. Alternatif
kaplama ile kaplama süresi azaltılabilmektedir. Kaplama prosesi; yüzey temizleme ile birlikte 7
kademede sonlandırılırken, alternatif kaplama yöntemi ile 3 kademede tamamlanabilmektedir. Ayrıca
alternatif kaplama ile korozyon direncinin arttığı, maliyetin %70-80 arası azaldığı görülmüştür. Böylece
alternatif kaplamanın çinko fosfat kaplamaya üstünlük sağlayan bir kaplama türü olduğu anlaşılmıştır.
Anahtar Kelimeler: korozyon, kaplama, çelik, çinko fosfat,
TEŞEKKÜR
Yapılan deneysel çalışma, Güney Çelik Hasır ve Demir Mam. San. Tic. A. Ş. tarafından
desteklenmektedir.
KAYNAKLAR
[1]. D. R. Pawloski, “Lubricating Chemical Coating For Metal Working “, 2006.
[2]. Z. G. Wang, S. Komiyama, Y. Yoshikawa, T. Suzuki, K. Osakada, “Evaluation of lubricants without zinc
phosphate precoatin multi-stage cold forging”, 2015.
[3]. R. R. Roelofs, “Lubricant for metal cold forming processes and methods of use of the same.”, 2015.
[4]. M. Gariety, G .Ngaile, T. Altan, “Evaluation of new cold forging lubricants without zinc phosphate
precoat”, vol.47, sorunlar 3-4, pp. 673-681, 2007.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: 03223945030
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S54
THE INHIBITION EFFECTS OF PHENOL RED ON CORROSION BEHAVIOUR
OF
COPPER IN CHLORIDE SOLUTION
Guray KILINCCEKER*1, Sema CELIK1, M. Kemal SANGUN2 1Çukurova University, Chemistry Department, Sarıçam/ ADANA / TURKEY
2Mustafa Kemal University, Department of Chemistry, Antakya / HATAY / TURKEY
The corrosion behaviour of copper in 3.5% NaCl solution (pH=3.5) with the absence and presence
of phenol red has been investigated by electrochemical techniques such as potentiodynamic polarization
and electrochemical impedance spectroscopy (EIS). The optimum concentration of the studied inhibitors
showing highest inhibition efficiency was also evaluated at constant temperature (298 K). The inhibition
efficiency was found to increase with increase in concentration of phenol red. Thermodynamic parameter
for the adsorption process were determined. Scanning electron microscopy (SEM) observations of the
mild steel surface confirmed the existence of such an adsorbed film.
Key Words: copper, electrochemical techniques, corrosion, adsorption isotherm, thermodynamic parameter.
ACKNOWLEDGMENT
The authors are greatly thankfull to Çukurova University, Art and Science Faculty, Chemistry Department for
support.
REFERENCES
[1]. G. Kılınççeker, B. Yazıcı , AB. Yılmaz and M.Erbil, “ The effect of phosphate ions on the on
electrochemical behavior of copper in sulphate solutions.” British Corrosion Journal,37,23-30 ,2008.
[2]. G. Kılınççeker, H. Galip, “The effect of acetate ions on electrochemical behavior of copper in chloride
solutions” Mater. Chem. Phys., vol. 110, p. 380,2008
[3]. G. Kılınççeker, H.Galip, “Electrochemical behaviour of zinc in chloride and acetate solutions” Protect
Met. Phys. Chem. Surf., 2009, vol. 45, p. 232.
[4]. G. Kılınççeker, S. Çelik, “Electrochemical adsorption properties and inhibition of copper corrosionin
chloride solutions by ascorbic acid :experimental and theoretical investigation”. Ionics,19(11),1655-
1662,2013
* Corresponding Author
E-Mail: [email protected]
Phone: +90 322 338 60 81 (2494)
XVth International Corrosion Symposium
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S55
THE EFFECTS OF POLYCARBOXYLATE BASED SUPERPLASTICIZER ON
CORROSION RESISTANCE OF STEEL REINFORCEMENT IN CONCRETE
Güray KILINÇÇEKER*1, Nida YEŞİLYURT1, Mustafa Kemal SANGÜN2 1Department of Chemistry, Faculty of Sciences and Letters, Çukurova University,
01330 Balcalı, Sarıçam, Adana, Turkey 2Department of Chemistry, Faculty of Sciences and Letters, Mustafa Kemal University,
31060 Hatay, Turkey
The corrosion behavior of reinforcing steel was investigated in chloride solutions, in the presence of
0.5% polycarboxylate based superplasticizer of cement weight. Electrochemical impedance spectroscopy
(EIS) and potentiodynamic polarization measurements were used for this purpose. The pH of the solution
was adjusted to 8.0 at constant temperature (298 °K). The polycarboxylate based superplasticizer could be
inhibited anodic dissolution of reinforcing steel in aggressive chloride media. Due to the chloride
penetration is reduced with polycarboxylate based super plasticizer. The inhibition effect of
polycarboxylate based superplasticizer was resulted from complex formations (between polycarboxylate
plasticizer and corrosion products).
Key Words: Reinforcing steel, Concrete, Corrosion, Inhibition, Polycarboxylate based superplasticizer.
ACKNOWLEDGMENT
The authors are greatly thankful to Çukurova University, Art and Science Faculty, Chemistry
Department for support.
REFERENCES
[1]. G. Kılınççeker, N. Taze, H. Galip, B. Yazıcı, The effect of sulfur dioxide on iron, copper and brass , Anti-
Corros. Meth. Mater. 58 (2011) 4-12
[2]. G. Kılınççeker, M. Erbil, The effect of phosphate ions on the electrochemical behaviour of brass in
sulphate solutions, Mater. Chem. Phys.119 (2010) 30-39
[3]. G. Kılınççeker, H. Galip, Electrochemical Behaviour of Zinc in Chloride and Acetate Solutions, Protect.
Met. Phys. Chem. Surf. 45 (2009) 232-240.
[4]. G. Kılınççeker, The effects of acetate ionson electrochemical behaviour of brass in chloride solutions,
Colloids Surf. A: Phys. Eng. Asp. 329 (2008) 112-118.
[5]. T. Doğan, G. Kılınççeker, The effects of glucose, maltose and starch on electrochemical behaviour of
copper in chloride solutions, Corrosion (TR). 14 (2006)
[6]. H. Kahyaoğlu, M. Erbil, B. Yazıcı, A.B. Yılmaz, Corrosion of reinforcing steel in concrete immersed in
chloride solution and the effects of detergent additions on diffusion and concrete porosity. Turk J Chem. 26
(2002)
* Corresponding author
E-mail: [email protected]
Phone: +90 322 338 60 81 (2494)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S56
PANI/NiO ve PANI/TiO2 KOMPOZİTLERİN ELEKTROKİMYASAL OLARAK
L304 ÇELİK YÜZEYİNE KAPLANMASI VE KOROZYON DAVRANIŞLARININ
İNCELENMESİ
Buket BOZKURT*1, Sibel ZOR1 1Kocaeli Üniversitesi Fen Edebiyat Fakültesi Kimya Bölümü, Kocaeli/TÜRKİYE
İletken polimerler, çok yönlü ve kullanışlı karakteristik özelikleri içermesinden dolayı, geniş bir
uygulama potansiyeline sahiptir. Bu uygulama alanlarından biri de, metal korozyonunun önlenmesinde
organik kaplama malzemesi olarak kullanılmasıdır. Ancak iletken polimerlerin antikorozif kaplamaları
sırasındaki temel sorun, gözenekli yapıda su tutulmasına bağlı olarak dayanıklılığın azalmasıdır. Bu
amaçla, polimerik kaplamaların uzun süre dayanımını arttırmak için, yarı iletken karakterli (TiO2, ZnO,
Sb2O3 gibi) metal nano oksit katkı maddesi olarak kullanılmaktadır [1]. Bu amaçla çalışmamızda, 0,5 M
okzalik asit ve 0,2 M anilin içeren elektrolit çözeltisi içerisine farklı miktarlardaki (0,1 g ,0,3 g , 0,5 g)
NiO , TiO2 inorganik nano metal oksit içeren ve içermeyen ortamlarda dönüşümlü voltametri yöntemi ile
elektrokimyasal olarak L304 çelik elektrot yüzeyine polimerik kompozit (PANI, PANI/nano metal oksit)
kaplama yapılmıştır. Elektrokimyasal polimerizasyon yöntemiyle kaplanmış olan L304 Çeliğin klorür
içeren çözeltilerdeki korozyona karşı dayanıklılığı, Tafel polarizasyon ve empedans spektroskopi
yöntemleri kullanılarak araştırılmıştır. Metal yüzeyine kaplanan polimerik kompozitlerin yapı
karakterizasyonları Taramalı elektron mikroskobu (SEM), Fourier dönüşümlü kızılötesi (FTIR) ile termal
davranışları ise Diferensiyel tarama kalorimetrisi DSC analizleriyle karakterize edilmiştir. PANI ve
PANI/nanometal oksit (NiO, TiO2) ile kaplanan çeliğin 2,0 M NaCl çözeltisindeki korozyon davranışı
Tafel polarizasyon ve empedans spektroskopisi ölçümleri ile belirlenmiştir. Kaplamanın zamana bağlı
etkisi, kaplanmış çelik plakaların 7 gün içerisinde 2,0 M NaCl çözeltisinde bekletilerek SEM
görüntüleriyle incelenmiştir. Çalışma sonunda, L304 Çeliğin korozyonunu önlemede, sade PANI’nin
nano metal oksit içeren PANI’ ye göre fazla etkili olmadığı belirlenmiştir. Polimerik nano metal oksit
kompozitlerinden de 0,5 gr nano metal oksit (NiO, TiO2) içeren polimerik kompozitin metal yüzeyi
üzerinde diğerlerine kıyasla daha etkili olduğu belirlenmiştir.
Anahtar Kelimeler: elektrokimyasal polimerizasyon, PANI/nanometal oksit, iletken polimer.
TEŞEKKÜR
Bu çalışma, Kocaeli Üniversitesi Bilimsel Araştırmalar Proje Birimi (BAP) tarafından (KOU-BAP-
2016/065 nolu proje ile desteklenmiştir. KOU BAP birimine desteğinden dolayı teşekkür ederiz.
KAYNAKLAR
[1]. P. P. Deshpande, N. G. Jadhac,V.J.Gelling , D.Sazou , ‘‘CONDUNTING POLYMER FOR
CORROSION PROTECTION’’ .Coat.Technol.Res., vol.11, no. 4, pp. 473-494, 2014.
* Corresponding Author
E-Mail: [email protected]
Phone:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S57
CORROSION BEHAVIOR OF PANI/EPOXY/NANO SnO2 POLYMERIC
NANOCOMPOSITE COATED STAINLESS STEEL IN 3.5 % NaCl
Sibel ZOR, Nargiz ILMIEVA*
Kocaeli University Science-Art Faculty Chemistry Department, Kocaeli/TURKEY
Epoxy resin materials have been used as a matrix of anticorrosive coatings of polymeric nanocomposites
obtained by chemical polymerization due to outstanding processability, good electrical insulating properties of the
final material even at high temperatures [1], strong adhesion, high mechanical strength and good thermal properties
[2], excellent chemical resistance, better design flexibility and ease of application [3].
The present paper reports an approach to develop anticorrosion performance of PANI and
PANI/Epoxy/metal oxide polymeric nanocomposites on the surface of stainless steel L304. For this purpose, at
first, polyaniline nanocomposites containing metal oxide nanoparticles such as SnO2 with different ratios (0.1 g,
0.25 g, 0.5 g, and 1.0 g) were successfully synthesized by in-situ polymerization for improving the corrosion
efficiency of polyaniline. The synthesized polymeric nanocomposites have been characterized by Fourier transform
infrared (FTIR) spectroscopy, X-ray diffraction pattern (XRD), scanning electron microscopy (SEM), thermal
gravimetric analysis (TGA) and differential scanning calorimetry (DSC) analysis techniques. At the same time, to
enhance the mechanical and barrier properties of PANI matrix, polyaniline nanocomposites in the presence of
metal oxide nanoparticles were mixed with epoxy resin such as polyvinyl butyral (PVB) through a solution mixing
method and applied as additives in the polyaniline matrix. PANI/epoxy/metal oxide polymeric nanocomposites
were prepared as a thin layer coating and applied on polished AISI 304 stainless steel substrates and its corrosion
protection efficiency was investigated by potentiodynamic polarization and electrochemical impedance
spectroscopy (EIS) in 3.5 wt% NaCl as aggressive media. The surface morphology and the structure of the film
were evaluated by scanning electron microscopy (SEM). Finally, the obtained results revealed that
PANI/epoxy/SnO2 metal oxide nanocomposite coatings provided a significant protection against corrosive
environment.
Keywords: Conducting polymers, Corrosion, Epoxy resin, Nanocomposite, Stainless steel.
ACKNOWLEDGMENT
This research was supported by Scientific Research Projects Unit of Kocaeli University for
supporting this present study under grant number 2016/065.
REFERENCES [1]. X. Shi, T.A. Nguyen, Z. Suo, Y. Liu, R. Avci, ‘‘Effect of Nanoparticles on the Anticorrosion and
Mechanical Properties of Epoxy Coating’’, Surface & Coatings Technology, 204, 237-245, 2009.
[2]. S. Pour-Ali, Ch. Dehghanian, A. Kosari, ‘‘In-situ Synthesis of Polyaniline-Camphorsulfonate Particles in
an Epoxy Matrix for Corrosion Protection of Mild Steel in NaCl Solution’’, Corrosion Science, 85, 204-
214, 2014.
[3]. A. Olad, B. Mohammad, B. Sepideh, ‘‘Preparation of PANI/Epoxy/Zn Nanocomposite using Zn
Nanoparticles and Epoxy Resin as Additives and Investigation of Its Corrosion Protection Behavior on
Iron’’, Progress in Organic Coatings, 74, 221-227, 2012.
* Corresponding Author
E-Mail: [email protected]
Phone:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S58
ANODİZE ALÜMİNYUM YÜZEYLERDEKİ BOR NİTRÜR TAKVİYELİ
AKIMSIZ NİKEL KAPLAMANIN ÖZELLİKLERİNE ISIL İŞLEMİN ETKİSİ
Mustafa KOCABAŞ*1,2, Nurhan CANSEVER2 1Selçuk Üniversitesi, Metalurji ve Malzeme Mühendisliği Bölümü, Selçuklu / KONYA / TÜRKİYE
2Yıldız Teknik Üniversitesi, Metalurji ve Malzeme Mühendisliği Bölümü, Esenler / İSTANBUL /
TÜRKİYE
Alüminyum ve alaşımları, en yaygın olarak kullanılan demir dışı metal gurubudur. Yaygın
kullanımındaki üstünlüğünü onlarca yıldır devam ettirmesinin nedeni sahip olduğu hafiflik, uygun
koşullarda yapılan ısıl işlem ile elde edilen yüksek mukavemet ve yüksek korozyon direnci gibi
özellikleridir. Yüzey özelliklerinde yapılan iyileştirmeler, alüminyum ve alaşımlarının mevcut
avantajlarına yeni avantajlar ilave etmektedir.
Bu çalışmada, bor nitrür takviyeli akımsız nikel kompozit kaplamalar, anodize 1050 Al numunesine
uygulanmıştır. Al numuneler, önce sülfürik asit (H2SO4) çözeltisinde 5 dk süreyle anodize edilmiş, daha
sonra nikel florür çözeltisi kullanılarak aktifleştirilmiştir. Aktifleştirilmiş anodize yüzeye sahip olan
numuneler, standart akımsız nikel-fosfor (Ni-P) banyosunda (pH: 4.4-4.8), 85°C sıcaklıkta, farklı
miktarlarda (1, 5 ve 10 g/l) 0.5 µm boyutlu hekzagonal bor nitrür (h-BN) ilave edilerek kaplanmıştır.
Parçacık yüzeylerini aktifleştirmek ve toplanmalarını önlemek için kompozit kaplama çözeltisine yüzey
aktifleştirici madde olarak sodyum dodesil sülfat (SDS) ilave edilmiştir. Yapılan inceleme ve
hesaplamaların sonucunda kaplama içerisine giren hacimce h-BN miktarları, 1 g/l h-BN ilave edilen
numune için %0.94, 5 g/l numune için %4.34 ve 10 g/l numune için ise %7.56 bulunmuştur.
Kompozit kaplamanın yüzey morfolojisinin, klasik akımsız nikel kaplama yüzey morfolojisi olan
nodüler karnabahar yapısında olduğu yapılan mikroskobik incelemelerle tespit edilmiştir. Kompozit
kaplamalara 400°C’de kontrollü atmosferde (%100 Ar) 1 sa süreyle ısıl işlem yapılmıştır. XRD (X Işını
Kırınım Ölçer) analizi, amorf yapıdaki nikel matrisin ısıl işlem ile kristalin yapıya dönüştüğünü
göstermiştir. Isıl işlem ile ayrıca sertlik değerleri artmış ve en yüksek sertlik değerine 10 g/l ilaveli
numunede (1015 HV0,05) ulaşılmıştır.
Isıl işlemsiz ve işlemli akımsız nikel kompozit kaplamaların korozyon deneyleri %3.5 sodyum
klorür (NaCl) çözeltisinde klasik üç elektrotlu sistem kullanılarak yapılmış, elektrokimyasal impedans
spektroskopisi (EIS) verileri ve potansiyodinamik polarizasyon eğrileri çizdirilmiştir. Yapılan analiz ve
hesaplamalar sonunda, kompozit kaplamalarda ısıl işlemin korozyon direncini azalttığı belirlenmiştir. En
düşük korozyon hızı 1 g/l h-BN parçacık içeren ısıl işlemsiz numunede elde edilmiştir (0.034 mm/yıl).
Anahtar Kelimeler: AA1050, anodik oksidasyon, akımsız nikel kompozit kaplama, h-BN, korozyon.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 332 223 2203
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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AN ELECTROCHEMICAL STUDY EXAMINING THE EFFECT OF A NEWLY
SYNTHESIZED AROMATIC TYPE OF A SCHIFF BASE ON THE BEHAVIOUR
OF THE TEMPERATURE OF MILD STEEL IN HCl SOLUTION
Demet ÖZKIR*1 1Nigde Ömer Halisdemir University, Faculty of Arts & Sciences, Department of Chemistry, NIĞDE / TURKEY
Corrosion is one of the most important and up-to-date issues in both chemistry and engineering that
need to be carefully considered because of direct and indirect damages to the environment. For this
reason, almost half of the mild steel production in the industry is degraded due to corrosion and leads to
wasting. [1]. Recently, substitutional Schiff bases containing aromatic rings and heteroatoms have been
generally used to prevent metal corrosion [2,3]. In this study, the inhibitory effect of new aromatic type
Schiff base (DFMF) synthesized from the condensation reaction of 2,5-dichloroaniline and 2-
hydroxybenzaldehyde to mild steel corrosion in 1.0 M HCl solution was evaluated at 298 K and 328 K
temperatures using the potentiodynamic polarization method. This measurement indicate that DFMF
behaves as a cathodic controlled mixed-type inhibitor in acidic medium and prevents the corrosion of
mild steel even at higher temperature. Different isotherms have been tried to understand the adsorption of
DFMF molecules on the metal surface, and the most compatible of these adsorption isotherms is the
Langmuir isotherm. Temperature-dependent adsorption parameters such as adsorption equilibrium
constant (Kads), adsorption free energy (Gads) and activation energy (Ea) for the two temperatures were
calculated. As a result, the adsorption has come to be that it is spontaneous and strong on the metal
surface. The 3D surface images of the electrodes after 120 h immersion times in 1.0 M HCl were studied
with atomic force microscope (AFM) to obtain more detailed information on how the DFMF protected
the metal surface and the surface roughness. Thus, the result that DFMF is a good inhibitor for mild steel
in acidic medium is supported. Key Words: Aromatic Schiff base, adsorption, Tafel extrapolation, AFM.
ACKNOWLEDGMENT
Author gratefully thanks to Nigde Ömer Halisdemir University Scientific Research Projects Unit (Project
Number: FEB 2013/41) for their financial support during this study.
REFERENCES
[1]. M. Messali, M. Larouj, H. Lgaz, N. Rezki, F. F. Al-Blewi, M. R. Aouad, A. Chaouiki, and R. Salghi, “A NEW
SCHIFF BASE DERIVATIVE AS AN EFFECTIVE CORROSION INHIBITOR FOR MILD STEEL IN
ACIDIC MEDIA: EXPERIMENTAL AND COMPUTER SIMULATIONS STUDIES,” J. Mol. Struct., vol.
1168, pp. 39–48, 2018.
[2]. D. Özkır and Ö. Çifcibaşı, “ASİDİK ORTAMDA YUMUŞAK ÇELİĞİN KOROZYONUNA İNHİBİTÖR
OLARAK 2,5-DİKLOROANİLİN TÜREVLİ BİR SCHIFF BAZININ ADSORPSİYONUNUN
ELEKTROKİMYASAL YÖNTEMLERLE İNCELENMESİ,” Engineering Sciences, vol. 12, no. 2, pp. 97–107,
2017.
[3]. D. Özkır,“YUMUŞAK ÇELİĞİN KOROZYON İNHİBİTÖRLERİNE KLOROANİLİNDEN SENTEZLENEN
YENİ BİR ÖRNEK: 2-[(2,5-DİKLOROFENİLİMİNO)METİL]FENOL,” Omer Halisdemir University Journal
of Engineering Sciences, vol. 7, no. 2, doi: 10.28948/ngumuh.404259, 2018.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 388 225 4053
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S62
5-PHENYL-1H-1, 2, 4-TRİAZOLE-3-THİOL’İN (5-PTT) ASİDİK ORTAMDA
YUMUŞAK ÇELİĞİN KOROZYONUNA İNHİBİSYON ETKİSİNİN TEORİK
OLARAK ARAŞTIRILMASI
Ayşe ONGUN YÜCE*
Çukurova Üniversitesi, Kimya Bölümü, Sarıçam / ADANA / TÜRKİYE
Korozyon inhibitörleri olarak bileşikleri belirlemek ve değerlendirmek için yapılan araştırma
çalışmaları organik bileşikler ve bunların yapıları ile inhibisyon etkileri arasındaki İlişkiyi belirlemeye
yöneliktir [1]. Yapılan araştırmalarda, elektronegatif atomlar (N, S, P, O gibi), fonksiyonel gruplar içeren
heterosiklik yapıların ve doymamış bağlar içeren bileşiklerin inhibisyon etkinliklerinin daha fazla olduğu
belirlenmiştir [2].
Bu çalışmada, asidik ortamda 5-phenyl-1H-1,2,4-triazole-3-thiol’in (5-PTT) yapısı ve yumuşak
çeliğin korozyonuna inhibisyon etkisi arasındaki ilişkiyi açıklamak amacıyla Density Functional Theory
(DFT) kullanarak optimize yapılar, Muliken yükleri, moleküler orbital yoğunlukları ve ilgili parametreler
kuantum kimyasal hesaplamalarla belirlenmiştir.
Şekil 1. 5-phenyl-1H-1,2,4-triazole-3-thiol’in (5-PTT) optimize yapısı.
Anahtar Kelimeler: Yumuşak çelik, korozyon, 5-PTT.
TEŞEKKÜR
Bu çahşmanın yapılmasında destek veren Çukurova Üniversitesi Fen-Edebiyat Fakültesi Kimya
Bölümü Fizikokimya Araştırma Lab.’ına ve değerli katkıları için Prof. Dr. Gülfeza Kardaş’a teşekkür
ederim.
KAYNAKLAR
[1]. H. Lgaz, R. Salghi, I. H. Ali, “CORROSİON INHİBİTİON BEHAVİOR OF 9-
HYDROXYRİSPERİDONE AS A GREEN CORROSİON INHİBİTOR FOR MİLD STEEL İN
HYDROCHLORİC ACİD: ELECTROCHEMİCAL, DFT AND MD SİMULATİONS STUDİES,”
International journal of electrochemical science, vol. 13, no. 1, pp. 250–264, 2018.
[2]. C. Verma, E. E. Ebenso, L. O. Olasunkanmi, M. A. Quraishi, I. B. Obot, “ADSORPTİON BEHAVİOR OF
GLUCOSAMİNE BASED PYRİMİDİNE-FUSED HETEROCYCLES AS GREEN CORROSİON
INHİBİTORS FOR MİLD STEEL: EXPERİMENTAL AND THEORETİCAL STUDİES,” The Journal of
Physical Chemistry, vol. 120, no. 21, pp. 11598–11611, 2016.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 322 3386081 (16)
XVth International Corrosion Symposium
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S63
DISENTANGLING THE RELATIONSHIP BETWEEN INHIBITION EFFECT
AND STRUCTURE OF TWO DRUGS: A THEORETICAL STUDY
Gökhan GECE*1, Semra BİLGİÇ2 1Bursa Technical University, Chemistry Department, Yıldırım / BURSA / TURKEY
2Ankara University, Chemistry Department, Beşevler / ANKARA / TURKEY
Although the compact oxide film on aluminum surface is generally stable in the solutions of pH
ranges of about 4.5 to 8.5, it is subject to dissolution particularly in strong acidic or alkaline solutions [1].
To date, a number of different drugs has been investigated in several corrosive media for aluminum
surfaces, and successful results were obtained [2]. In a very new experimental study by Nathiya et al. [3],
two expired drugs, i.e., moxifloxacin and betamethasone (Figure 1), which are widely used for the
systemic treatment of bacterial infections and inflammation respectively, were considered as effective
corrosion inhibitors for aluminum in sulfuric acid solution. However, very little is known about the
interaction of these compounds with the aluminum surface and a description of inhibition mechanism at
the atomic level.
(a)
(b)
Figure 12. Optimized structures of (a) moxifloxacin and (b) betamethasone
In respect to this, quantum chemical calculations have been used in this study for a better
understanding of the inhibition effects of these drugs on the corrosion of aluminum in acidic media. For
this purpose, the structures and the ground-state energies of two drugs under investigation have been
analyzed employing density functional theory (DFT) as implemented in the Gaussian09 program. The
exchange-correlation functional, M06-2X was selected due to its good performance on ionization
potentials and electron affinities; dispersion-like interactions are also well characterized by this
functional. In addition, the double-zeta basis set, DGDZVP, was applied in order to include an all-
electron description of the different atoms present in the studied compounds. The reported optimized
geometries, molecular properties such as highest occupied molecular orbital energy (EHOMO), the
lowest unoccupied molecular orbital energy (ELUMO) and HOMO–LUMO energy gap (ΔE) as well as
essential global reactivity parameters have also been used to understand the inhibition efficiency of
moxifloxacin and betamethasone. Key Words: corrosion inhibitor, betamethasone, moxifloxacin, DFT.
REFERENCES [1]. J. D. Minford, Handbook of Aluminum Bonding Technology and Data. New York: CRC Press, 1993.
[2]. G. Gece, “DRUGS: A REVIEW OF PROMISING NOVEL CORROSION INHIBITORS,” Corrosion Science, vol.
53, no. 12, pp. 3873-3898, 2011.
[3]. R. S. Nathiya, S. Perumal, V. Murugesan, and V. Raj, “EXPIRED DRUGS: ENVIRONMENTALLY SAFE
INHIBITORS FOR ALUMINIUM CORROSION IN 1 M H2SO4,” Journal of Bio- and Tribo-Corrosion, vol. 4, no.
1, pp. 1-13, 2018.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 224 300 3533
XVth International Corrosion Symposium
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S65
ETİLEN GLİKOLÜN KOROZYON İNHİBİTÖRÜ OLARAK %3.5 NaCl
ORTAMINDA AA7075 ALAŞIMI İÇİN KULLANILABİLME POTANSİYELİNİN
ARAŞTIRILMASI
Hüsnü GERENGİ1, Ertuğrul KAYA*1, Fatima Erman BAĞCI1 1Düzce Üniversitesi, Mühendislik Fakültesi, Korozyon Araştırma Laboratuvarı, DÜZCE / TÜRKİYE
Alüminyumun üstün korozyon direncinin doğada kendiliğinden oluşan oksit tabakasından
kaynaklandığı bilinmektedir [1]. Alüminyum ve alaşımları yüzeyinde bulunan bu oksit tabaka asidik,
alkali çözeltiler ve özellikle klorür içeren çözeltilere maruz kaldığında tahrip olarak metali korozyona
uğratmaktadır [2]. Saf alüminyum metali dış ortamlara karşı zayıflık gösterdiği için kullanımı sınırlıdır.
Alüminyum metalinin özelliklerini ve kullanım alanını arttırmak için alaşımlama yapılmaktadır [3]. Bir
alüminyum alaşımı olan AA7075 metali alaşım olarak Zn, Mg ve Cu içermektedir. Bu alaşımın en dikkat
çekici özelliği yüksek mukavemet, mükemmel süneklik, tokluk ve yüksek yorgunluk özelliğidir. Bu
yüzden havacılık, otomobil, uzay ve inşaat gibi sektörlerde oldukça yaygın olarak kullanılmaktadır [4].
Diğer metallere göre avantajları nedeniyle AA7075 alaşımları etilen glikol/su transferi bulunan güneş
enerjisi, termal kolektör sistemleri ve otomobil radyatörlerinde kullanılan hafif, yüksek ısı iletkenliği olan
bir malzemedir [5,6]. Etilen glikolün araba radyatörlerinde kaynama sıcaklığını düşürmek için soğutma
sıvısı olarak kullanıldığı bilinmektedir [7]. Yapılan bu çalışmada AA7075 alaşımının %3.5 NaCl
çözeltisine hacimsel olarak %10, %20, %30, %40 ve %50 oranında ilave edilen etilen glikol içerisindeki
korozyon mekanizması; Tafel Ekstrapolarizasyon (TP) ve Dinamik Elektrokimyasal Empedans
Spektroskopisi (DEIS) yöntemleri kullanılarak araştırılmıştır. Kullanılan elektrokimyasal yöntemlerden
elde edilen sonuçların birbirleriyle uyumlu olduğu ve % 3.5 NaCl çözeltisine ilave edilen etilen glikol
miktarındaki artışa bağlı olarak AA7075 alaşımının daha az korozyona uğradığı tespit edilmiştir. Metal
yüzeyinin incelenmesinde kullanılan SEM, EDAX ve AFM analizleri etilen glikolün metal yüzeyinde
tutunarak metali korozyona karşı koruduğunu göstermektedir.
Şekil 1. Alüminyum ile etilen glikolün reaksiyon mekanizması.
Anahtar Kelimeler: AA7075; DEIS; Etilen Glikol, Korozyon
*Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 0541 564 33 25
XVth International Corrosion Symposium
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KAYNAKLAR [1]. Fatima Erman Bağcı, Master’s thesis, Duzce University Institute of Science, Department of Chemistry,
“Determination of the potential use of ethylene glycol as a corrosion inhibitor in %3.5 NaCl”, May 2018.
[2]. H. Gerengi, “Anticorrosive properties of Date palm (Phoenix dactylif1era L.) fruit juice on 7075 type
aluminum alloy in 3.5% NaCl solution,” Industrial & Engineering Chemistry Research, vol. 51, pp. 12835–
12843, 2012.
[3]. H. Gerengi, H. Göksu and P. Slepski, "The ınhibition effect of mad honey on corrosion of 2007-type
aluminium alloy in 3.5% NaCl solution," Materials Research, vol.17, pp. 255-264, 2014.
[4]. H. Gerengi, M. M. Solomon, E. Kaya, F. E. Bağcı, E. J. Abai, “An evaluation of the anticorrosion effect of
ethylene glycol for AA7075-T6 alloy in 3.5% NaCl solution”, Measurement, vol. 116, pp. 264-272, 2018.
[5]. G. A. Zhang, L. Y. Xu and Y. F. Cheng, "Mechanistic aspects of electrochemical corrosion of aluminum
alloy in ethylene glycol–water solution," Electrochimica Acta, vol. 53, pp. 8245–8252, 2008.
[6]. O. K. Abiola and J. O. E. Otaigbe, "Effect of common water contaminants on the corrosion of aluminium
alloys in ethylene glycol–water solution", Corrosion Science, vol. 50, pp. 242-247, 2008.
[7]. L. Y. Xu and Y. F. Cheng, “Electrochemical characterization and CFD simulation of flow-assisted
corrosion of aluminum alloy in ethylene glycol-water solution,” Corrosion Science, vol. 50, pp. 2094-2100,
2008.
XVth International Corrosion Symposium
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S66
St37 ÇELİĞİNİN 1 M HCl ORTAMINDAKİ KOROZYON MEKANİZMASINA
İYONİK OLMAYAN YÜZEY AKTİF MADDENİN ETKİSİNİN ARAŞTIRILMASI
Mesut YILDIZ*1, Ayhan YILDIRIM2, Serkan ÖZTÜRK2, Hana LAHBIB3, Kadir GÖKŞEN4, Gözen
BEREKET5, Hüsnü GERENGİ1 1Düzce Üniversitesi, Mühendislik Fakültesi, Korozyon Araştırma Laboratuvarı, Düzce/Türkiye
2Uludağ Üniversitesi, Fen Edebiyat Fakültesi, Kimya Bölümü, BURSA/TÜRKİYE 3Carthage University, Research Laboratory of Environmental Science and Technologies, Tunisia
4Düzce Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümü, DÜZCE/TÜRKİYE 5Eskişehir Osmangazi Üniversitesi, Fen Edebiyat Fakültesi, Kimya Bölümü, ESKİŞEHİR/TÜRKİYE
Düşük karbon çeliği (St37), mekanik özelliklerinin iyi olması, kolay işlenebilirliği ve uygun
maliyetli olması nedeniyle cıvata, somun, makine parça imalatı, yapı ve inşaat sektöründe en çok
kullanılan metaldir. Hidroklorik ve sülfürik asit gibi mineral asitler, ısıtıcı ve kazanların temizliği, pas ve
istenmeyen maddelerin arındırılması işlemlerinde sıklıkla kullanılmaktadır [1]. Bu uygulamalar, korozyon
sürecinin kontrol edilmemesi durumunda metal korozyonuna ve arızaya neden olmaktadır. Malzemeleri
korozyona karşı korumak için ortama korozyon inhibitörlerinin katılmasıyla, metalin yüzey kimyasının
değişmesi sonucunda korozyon olayı yavaşlamakta ve kontrol altına alınmaktadır [2]. Ancak inhibitör
seçimi yapılırken inhibitör mekanizması ve etkin konsantrasyonların değerlendirmesi dikkate alınmalıdır.
İnhibitör olarak kromat, nitrat, nitrit ve fosfat esaslı inorganik ve genellikle yapılarında N, O, S, P ve /
veya π-bağları olan organik bileşikler yıllardır kullanılmaktadır [3-5]. Bu çalışmada kimyasal yapısı Şekil
1’de verilen iyonik olmayan yüzey aktif madde sınıfındaki N,N'-oktan-di-il-bis{2-[(2,3-
dihidroksipropil)sülfanil]asetamit} molekülünün St37 çeliği için 1 M HCl ortamındaki korozyon
inhibitörü olarak kullanılabilme potansiyeli araştırılmıştır.
SNH
OH O
OH NH
S OH
O OH Şekil 1. N,N'-oktan-di-il-bis{2-[(2,3-dihidroksipropil)sülfanil]asetamit}
Elektrokimyasal ölçümler sonrası kullanılan metal numunelerin yüzey morfolojisindeki değişim
Taramalı Elektron Mikroskobu (SEM) ve Enerji Dağılımlı X-Ray Spektroskopisi (EDS) ile incelenmiş ve
uygulanan tüm yöntemlerin sonuçları kıyaslanarak tartışılmıştır. Deney sonuçları, karma inhibitör özelliği
gösteren molekülün, 1 M HCl asit ortamında St37 çeliğini %87 oranında koruduğu tespit edilmiştir. SEM
ve EDS analizleri de inhibitörün St37 çeliğinin yüzeyinde adsorplanarak metali korozyona karşı
koruduğunu kanıtlamaktadır.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 380 542 1100 (1925)
XVth International Corrosion Symposium
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Anahtar Kelimeler: HCl, inhibitör, iyonik olmayan yüzey aktif madde, St37.
KAYNAKLAR
[1]. S. Üneri, Korozyon ve Önlenmesi, Ankara: Korozyon Derneği, XI, 2011.
[2]. N. Girit, “Korozyon İnhibitörleri,” Türkiye Mühendislik Haberleri, vol. 426, pp. 139-141, 2003.
[3]. M. Yildiz, H. Gerengi, M. M Solomon, E. Kaya, and S. A Umoren, “Influence of 1-butyl-1-
methylpiperidinium tetrafluoroborate on St37 steel dissolution behavior in HCl environment,” Chemical
Engineering Communications, vol. 205, no. 4, pp. 538-548, 2018.
[4]. H. Gerengi, M. M. Solomon, M. Kurtay, G. Bereket, K. Goksen, M. Yıldız, and E. Kaya, “Electrochemical
and morphological assessments of inhibition level of 8-hydroxylquinoline for AA2024-T4 alloy in 3.5%
NaCl solution,” Journal of Adhesion Science and Technology, vol. 31, no. 2, pp. 207-223, 2017.
[5]. H. Gerengi, “The Use of Dynamic Electrochemical Impedance Spectroscopy in Corrosion Inhibitor
Studies,” Protection of Metals and Physical Chemistry of Surfaces, vol. 54, no. 3, pp. 536-540, 2018.
XVth International Corrosion Symposium
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S67
SEMI-CROWN ETHER LINKED SYMMETRIC CATIONIC GEMINI
SURFACTANTS, SYNTHESIS AND THEIR CORROSION INHIBITION
EFFECTS ON CARBON STEEL IN 1 M HCL SOLUTION
Serkan ÖZTÜRK*, Ayhan YILDIRIM
Bursa Uludağ University, Department of Chemistry, Görükle – Nilüfer / BURSA / TURKEY
Gemini cationic surfactants are compounds which are composed of two hydrophilic head groups
and two hydrophobic tails linked by a rigid or flexible spacer at the head groups or closed to them. The
spacer group may be hydrophobic or hydrophilic [1]. Gemini surfactants have higher efficiency and
effectiveness than their corresponding monomer counterparts. Compared to their corresponding monomer
counterparts, gemini surfactants have much lower critical micelle concentration (cmc) values, much
higher tendency to adsorb at interfaces, closer packing of the hydrophobic groups and higher solubility in
water. These unique properties of gemini surfactants make them useful on the applications as emulsifiers
[2], dispersants [3], coating agents [4] and corrosion inhibitors [5].
In this study, two novel cationic gemini surfactants with hydrophilic oligo-oxyethylene spacer
group were synthesized and were characterized using spectroscobic methods (IR, and NMR). Critical
micelle concentrations and surface tension values were determined for the cationic gemini surfactants.
Corrosion inhibition tests were performed using the weight loss method at room temperature for 24 h on
carbon steel coupons in 1 M HCl. After result of the corrosion tests which were done using a low carbon
steel, fairly good inhibition efficiencies (over than 95 %) were obtained at different inhibitor
concentrations. To support the corrosion inhibition test results, surface images were obtained using
scanning electron microscopy (SEM) analysis.
Key Words: Synthesis, Cationic gemini surfactants, Corrosion, Carbon steel, HCl.
REFERENCES
[1]. F.E. Heakal, A.E. Elkholy, “Gemini surfactants as corrosion inhibitors for carbon steel,” Journal of Molecular
Liquids, vol. 230, pp. 395–407, 2017.
[2]. H.P. Li, H. Zhao, K. Liao, “The preparation of asphalt emulsions with dissymmetric gemini quaternary ammonium
salts cationic surfactants,” Energ. Source Part A, vol. 35, pp. 2285–2293, 2013.
[3]. M. Abo-Riya, A.H. Tantawy, W. El-Dougdoug, “Synthesis and evaluation of novel cationic gemini surfactants based
on Guava crude fat as petroleum-collecting and dispersing agents,” Journal of Molecular Liquids, vol. 221, pp. 642–
650, 2016.
[4]. X. Honglu, X. Guomei, “Suspension property of gemini surfactant in seed coating agent,” Journal of Dispersion
Science and Technology, vol. 29, no. 4, pp. 496–501, 2008.
[5]. O. Kaczerewska, R.L. Garcia, R. Akid, B. Brycki, “Efficiency of cationic gemini surfactants with 3-
azamethylpentamethylene spacer as corrosion inhibitors for stainless steel in hydrochloric acid,” Journal of Molecular
Liquids, vol. 247, pp. 6–13, 2017.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 224 2942943
XVth International Corrosion Symposium
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S69
MOTT SCHOTTKY ANALYSIS AND CHRONOAMPEROMETRIC
MEASUREMENTS FOR THE PASSIVATION OF THE AISI 321 STAINLESS
STEEL
Y.KOUMYA*1; R.IDOUHLI1, M. KHADIRI1, A.AITYOUB1, A.ABOUELFIDA1, A.BENYAICH1
Laboratory of Physical Chemistry of Materials and Environment, Department of Chemistry, University Cadi
Ayyad, Faculty of Science Semlalia, BP 2390, MARRAKECH / MOROCCO
AISI 321 stainless steel is a very corrosion resistant, and widely used structural material in several
industrial applications. Although it’s satisfactory performance in most acidic industrial environments, the
stability of its protective passive film formed on the surface depends mainly on the concentration of the
chloride ions in the solution where the stainless steel is placed. The aim of the present investigation is to
study the corrosion behavior of the AISI 321 stainless steel in the sulfuric acid, for this purpose, the
processes of the passivation and the breakdown of the passive film were studied. The semiconductor
properties of the passive films have a crucial utility in understanding the resistance of the stainless steel
[1]. The mott schottky analysis were performed at different passive film formation potentials, the donor
acceptor densities were determined as well as the semiconductor character. It was found that the donor
density decreases with increasing the formation potential. Besides that, the effect of the applied potential
on the kinetic parameters of the growth and the pitting of the passive film was studied. The obtained
chronoamperograms reveal that the applied potential affects mainly the rate of growth as well as the
nucleation-growth of the pits. The analysis of the anodic polarization curves for different concentrations
of chloride ions in sulfuric acid have clearly shown that the critical potential of stainless steel pitting
decreases with increasing the amount of the chloride ions. The obtained findings were corroborated by
using the surface examination.
Key Words: Stainless steel, passivation, pitting, mott schottky, chronoamperometry.
REFERENCES
[1]. A. Fattah-alhosseini, F. Soltani, F. Shirsalimi, B. Ezadi, and N. Attarzadeh, “The semiconducting
properties of passive films formed on AISI 316 L and AISI 321 stainless steels: A test of the point defect
model (PDM),” Corros. Sci., vol. 53, no. 10, pp. 3186–3192, 2011.
* Corresponding Author
E-Mail: [email protected]
Phone: +212 616030759
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S71
FABRICATION and CHARACTERIZATION of THE NI-BASED SUPERALLOY,
INVESTIGATION of HOT CORROSION BEHAVIOUR
Rasiha Nefise MUTLU*, Mehmet Burak KOCA, Gülfeza KARDAŞ, Birgül YAZICI
ÇukurovaUniversity, Chemistry Department, Balcalı / ADANA / TURKEY
Nickel-based superalloys have experienced extensive development and found enormous attractions
over the past four decades. Especially, Inconel Ni–Cr–Fe superalloys, has been widely employed in many
applications such as turbine blades, combustion chambers and nuclear reactors owing to its excellent
creep properties, oxidation resistance and hot corrosion resistance[1].
In this study, by mixing micrometric metal powders at certain ratios, it is aimed to produce a new
material by powder metallurgy method.For this purpose, the powdery alloy was prepared to take into
account the compositions of cast alloys with high corrosion resistance and pressed to a high pressure to
obtain palletized metals.After this process, the obtained samples were subjected to the sintering process
under the N2(g) atmosphere.The samples were heated to 900◦C as a speed of 10 ◦C dk-1. It was kept at 900 ◦Cfor 45 minutes. It was then allowed to stand for 15 minutes in a 1000 ° C heated oven and then cooled
by the speed of 10 ◦C dk-1. Hot corrosion test with molten salt of the samples before and after sintering
process was carried out. For this experiment, the surface of the sample was covered with NaCl: Na2SO4
salts. Subsequently, molten salt was formed at 900 ◦C, and mass exchange with time at this temperature
was observed.Scanning electron microscope (SEM), X-Ray diffraction (XRD) and Energy dispersion
spectrometry (EDS)measurements of samples before and after hot corrosion were taken. Furthermore,the
contact angles of the samples were measured.
Table .Chemical composition of Nickel-based superalloys
Ni Cr Fe C Mn Si Cu S
% Wt 72 17.5 8.23 0.15 1 0.6 0.5 0.015
Key Words: Powder metallurgy, Super alloy, Inconel, corrosion
ACKNOWLEDGMENT
The authors are greatly thankful to the Çukurova University Research Fund.
REFERENCES
[1]. Jia Q, GuD "Selective laser melting additive manufacturing of Inconel 718 superalloy parts:
Densification, microstructure and properties", Journal of Alloys and Compounds 585, 713-721, 2014.
*Corresponding Author
E-Mail: [email protected]
Phone: +90 322 338 69 68
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S72
ZnNiMo ALAŞIM KAPLI BAKIR YÜZEYİNDE POLİPİROL FİLM SENTEZİ
İÇİN YANIT YÜZEY YÖNTEMİNİN UYGULAMASI
Gül ÖZYILMAZ, Çağla SÜRMELİOĞLU*, İbrahim FİLAZİ, A. Tuncay ÖZYILMAZ
Hatay Mustafa Kemal Üniversitesi, Kimya Bölümü, Antakya, HATAY / TÜRKİYE
Metal ve alaşım kaplamalar korozyon koruması için etkili yöntemler olsa da, metallerin
oksitlenebilir yapısı nedeniyle uzun vade de farklı koruma teknikleri gereklidir. Son yıllarda yapılan
araştırmalar, yüzeyde elektrokimyasal yollarla kaplanabilen iletken polimerlerin, malzemeyi korozyondan
korumak için kullanılabileceğini göstermiştir [1-3]. Polipirolün (PPy) elektronik iletkenliğinin diğer
polimerlere oranla daha yüksek olması, elektrokimyasal ya da kimyasal yolla kolayca sentezlenebilir ve
elde edilen ürünün termal kararlılığının ayrıca mekanik özelliklerinin oldukça iyi olması Ppy’yi
literatürün oldukça aranan polimeri haline getirmiştir.[4]
Geçtiğimiz yıllarda literatürde Ppy'nin sentezi üzerine yapılan bir dizi çalışma ortaya çıkmıştır. Bu
çalışmaların ortak özelliği, dikkatli bir elektrokimyasal parametre seçimi talep etmeleridir. Bu nedenle,
araştırmacılar elektropolimerizasyon koşulları, uygulanan teknik, elektrolit çözeltisi ve pH değeri,
potansiyel aralık ve tarama hızı gibi parametreleri araştırmıştır [3-6]. Fakat bu çalışmaların çoğu klasik
yollarla gerçekleştirilmiştir. Bu çalışmalar tek parametre değişikliğinin aynı anda sonuca etkisini
incelemiştir. Fakat bu durum parametrelerin birbiriyle etkileşimini açıklamak için yetersizdir. Ancak,
Yanıt Yüzey Yöntemi (YYY), aynı anda birçok parametrenin sonuçlarındaki değişimi incelemek için
kullanılabilecek ve literatürdeki birçok disiplinde kullanılan matematiksel yöntemlerden biridir. [7-8]
Bu çalışmada, bakır elektrotun yüzeyi belli bir kalınlığa sahip çinko-nikel-molibden (ZnNiMo)
alaşımı ile kaplanmış ve sulu nötr ortamda molibdat iyonları varlığında Ppy filmi, yüzey üzerine
sentezlenmiştir. Sentez parametreleri Box-Behnken deney tasarımı ile modellenmiştir ve değişken sentez
parametrelerinin yüzey üzerindeki istatistiki etkilerinin incelenmesi ve yanıt yüzey grafikleri
oluşturulması amaçlanmıştır.
Anahtar Kelimeler: korozyon, cinko-nikel-molibdat, polipirol, yanıt yüzey yöntemi.
TEŞEKKÜR
Bu araştırma, 16681 sayılı proje ile Hatay Mustafa Kemal Üniversitesi Bilimsel Araştırma Projeleri
Koordinatörlüğü; 216Z151 sayılı proje ile TÜBİTAK tarafından desteklenmektedir.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 535 770 21 39
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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KAYNAKLAR
[1]. El Jaouhari, A., Laabd, M., Bazzaoui, E. A., Albourine, A., Martins, J. I., Wang, R., Nagy, G., Bazzaoui,
M., Electrochemical and spectroscopical studies of polypyrrole synthesized on carbon steel from aqueous
medium, Synthetic Metals 209; 11–18, 2015.
[2]. Hermas, A. A., Salam, M. A., Al-Juaid, S. S., Qusti, A. H., Abdelaal, M. Y., Electrosynthesis and
protection role of polyaniline-polvinylalcohol composite on stainless steel, Progress in Organic Coatings
77(2); 403–411, 2014.
[3]. Özyılmaz, A. T., Erbil, M., Yazıcı, B., The electrochemical synthesis of polyaniline on stainless steel and
its corrosion performance, Current Applied Physics 6(1); 1–9, 2006.
[4]. Wang,L.X., X-G., Yang, Y-L., ‘’Preperation, properties and applications of polypyrroles’’, Reactive &
Functional Polymers, 45:125-39, 2001.
[5]. Camalet, J. L., Lacroix, J. C., Aeiyach, S., Chane-Ching, K., Lacaze, P. C., Electrodeposition of protective
polyaniline films on mild steel, Journal of Electroanalytical Chemistry 416(1–2); 179–182, 1996.
[6]. Iroh, J. O., Zhu, Y., Shah, K., Levine, K., Rajagopalan, R., Uyar, T., Donley, M., et al., Electrochemical
synthesis: a novel technique for processing multi-functional coatings, Progress in Organic Coatings 47(3–
4); 365–375, 2003.
[7]. M. Poroch-Seritan, I. Cretescu, C. Cojocaru, S. Amariei, and C. Suciu, “Experimental design for modelling
and multi-response optimization of Fe-Ni electroplating process,” Chem. Eng. Res. Des., vol. 96, pp. 138–
149, 2015.
[8]. M. Poroch-Seritan, S. Gutt, G. Gutt, I. Cretescu, C. Cojocaru, and T. Severin, “Design of experiments for
statistical modeling and multi-response optimization of nickel electroplating process,” Chem. Eng. Res.
Des., vol. 89, no. 2, pp. 136–147, 2011"15. Uluslararası Korozyon Sempozyumu (KORSEM'18) Ana
Sayfası", Korsem18, 2018. [Online]. Avaible: http://korsem18.mku.edu.tr. [Accessed: 06- Feb- 2018].
XVth International Corrosion Symposium
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S73
ORGANİK MADDE VARLIĞINDA SENTEZLENEN POLİ(N-ETİL ANİLİN)
KAPLAMANIN KOROZYON PERFORMANSI
A. Tuncay ÖZYILMAZ1, Çağla SÜRMELİOĞLU1*, İbrahim FİLAZİ1, Cumali ÇELİK2 1Mustafa Kemal Üniversitesi, Kimya Bölümü, Antakya / HATAY / TÜRKİYE
2Yalova Üniversitesi, Yalova MYO, Mülkiyet Koruma ve Güvenlik Bölümü/YALOVA/TÜRKİYE
Paslanmaz çelikler (SS), mekanik mukavemet, korozyon direnci, biyouyumluluk, vb. nedeniyle
endüstrilerde ve günlük hayatta yaygın olarak kullanılmaktadır [1-4]. Yüzeydeki koruyucu pasif film
olarak Cr oksit ve / veya hidroksitler içerir [5,6]. Fakat paslanmaz çelikler klorür veya sülfat iyonu içeren
ortamlarda korozyona uğrayabilir [7]. Paslanmaz çeliklerde daha fazla koruyucu arayüz oluşturmak için
organik ve inorganik kaplamaların veya organik ve inorganik inhibitörlerin, kompozit materyal
kaplamanın, nano-kaplamanın ve plazma kaplamalarının veya iletken polimer kaplamaların kullanımı gibi
çeşitli stratejiler geliştirilmiştir. Bu bağlamda, polimerler, önemli ölçüde ilgi çekmeye devam ediyor.
Korozyona dayanıklı kaplamalar ve kapsamlı çalışma iletken polimerlerin kullanımı üzerinde
gerçekleştirilmiştir[8-10]. Paslanmaz çeliğin korozyondan korunumu için polianilin (PANİ) ve türevleri
ile ilgili kapsamlı çalışma yapılmıştır. Literatürde PANİ ve türevlerinin polimer filmlerin çeşitli
özelliklerini (kararlılık, iletkenlik, gözeneklilik) iyileştirdiği gözlenmiştir. Literatürde organik madde olan
C14H11NO3 (ANMA) henüz kullanılmamıştır. Polimer sentez ortamına eklenen organik bileşiğin
korozyon hızına etkisi bu çalışma ile araştırılmıştır.
Bu çalışmada poli(N-etil anilin) sentezi ortamına eklenen C14H11NO3 (ANMA)’nın korozyon
direncine etkisi araştırılmıştır. Bu amaçla, 2,5 mM konsantrasyonunda ANMA, 0,10 M (C4H9)4N(ClO4)
(TBAP) ve 0,10 M (N-etil anilin) içeren asetonitrilin sentez ortamına eklenmiştir. Bu ortamdan, ince bir
PNEA ve PNEA-ANMA filmleri, SS316L üzerinde, 100 mV/ s'lik tarama oranı uygulayan dönüşümlü
voltametri tekniği ile sentezlenmiştir. Elde edilen SS / PNEA ve SS / PNEA-ANMA elektrotlarının
korozyon performansı, %3,5’lik NaCI çözeltisi içerisinde AC empedansı ve anodik polarizasyon eğrisi
teknikleri ile değerlendirilmiştir. Ayrıca, polimer filmlerin yapısal karakterizasyonu FTIR ile
araştırılmıştır.
Şekil 3. ANMA’nın kimyasal yapısı
Anahtar Kelimeler: korozyon, elektropolimerizasyon, paslanmaz çelik, ANMA, poli(N-etil anilin).
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 535 770 21 39
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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KAYNAKLAR
[1]. Ren, Y.J.; Zeng, C.L. Effect of conducting composite polypyrrole/polyaniline coatings on the corrosion
resistance of type 304 stainless steel for bipolar plates of proton-exchange membrane fuel cells. J. Power
Sources 2008, 182 (2), 524–530.
[2]. Bazzaoui, M.; Martins, J.I.; Bazzaoui, E.A.; Albourine, A.; Martins, L. Corrosion protection of stainless
steel plates in fuel cells environment by conducting polymers. Mater. Corros. 2014, 65 (1), 67–75.
[3]. Garcia, M.A.L.; Smit, M.A. Study of electrodeposited polypyrrole coatings for the corrosion protection of
stainless steel bipolar plates for the PEM fuel cell. J. Power Sources 2006, 158 (1), 397–402.
[4]. Wang, T.; He, J.P.; Sun, D.; Zhou, J.H.; Guo, Y.X.; Ding, X.C.; Wu, S.C.; Zhao, J.Q.; Tang, J. Fabrication
of continuous mesoporous organic–inorganic nanocomposite films for corrosion protection of stainless
steel in PEM fuel cells. Corros. Sci. 2011, 53 (4), 1498
[5]. Asami, K.; Hashimoto, K. Importance of initial surface film in the degradation of stainless steels by
atmospheric exposure. Corros. Sci. 2003, 45 (10), 2263–2283.
[6]. Brooks, A.R.; Clayton, C.R.; Doss, K.; Lu, Y.C. On the role of Cr in the passivity of stainless-steel. J.
Electrochem. Soc. 1986, 133 (12), 24
[7]. Kimura, M.; Mizoguchi, T.; Kihira, H.; Kaneko, M. Various scale analyses to create functioning corrosion
products. In: Waseda, Y.; Suzuki, S., eds. Characterization of Corrosion Products on Steel Surfaces,
Springer: Berlin/Heidelberg, 2006, p. 245
[8]. Malik, M.A.; Wlodarczyk, R.; Kulesza, P.J.; Bala, H.; Miecznikowski, K. Protective properties of
hexacyanoferrate containing polypyrrole films on stainless steel. Corros. Sci. 2005, 47 (3), 771–783.
[9]. Armelin, E.; Pla, R.; Liesa, F.; Ramis, X.; Iribarren, J.I.; Aleman, C. Corrosion protection with polyaniline
and polypyrrole as anticorrosive additives for epoxy paint. Corros. Sci. 2008, 50 (3), 721–728.
[10]. Le, D.P.; Yoo, Y.H.; Kim, J.G.; Cho, S.M.; Son, Y.K. Corrosion characteristics of polyaniline-coated 316L
stainless steel in sulphuric acid containing fluoride. Corros. Sci. 2009, 51 (2), 330–338
XVth International Corrosion Symposium
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S74
EFFECT OF WELDING CURRENT ON WEAR AND HARDNESS PROPERTIES
OF COATINGS
Mustafa Kaptanoglu*
Firat University, Engineering Faculty, Metallurgy and Materials Engineering, ELAZIĞ / TURKEY
In this study, effect of welding current change on wear and hardness properties of the coatings
obtained by using submerged arc welding (SAW) technique and submerged arc welding powders
containing %16 ferrochromium were investigated. In this direction; welding tests were performed using
current values in the range of 400 - 550 A. After the welding tests, the test specimens from welded
samples were subjected to macro hardness, micro hardness and wear tests. Macro hardness measurements
were made using the Rockwell measurement method and micro hardness measurements were made using
the Vickers measurement method. Wear tests were carried out on a wear loss basis using a method similar
to the pin-on-disk method. For all weld tests, experimental work was done using the same sizing and
samples with the same technical specifications. 12 x 10 x 10 specimens were cut from the test specimens,
and these specimens were used for both the hardness measurements and the wear tests. At the end of the
study, it was determined that the amount of chromium and carbon that was obtained by coating was
increased by increasing the current value used during welding tests and by constantly setting other
machine parameters. As the amounts of chromium and carbon passing through the coating increased,
there were an increase in macro hardness results and a partial fluctuation in micro hardness results were
determined. The highest hardness values were obtained the coating as 53 HRC using with 550 A, while
the lowest hardness values were obtained the coating as 37 HRC using with 400 A. In parallel with the
hardness results, the wear losses of the coating also decreased, in other words the abrasion resistances
also increased. In the worn surface analyzes, the wear surface lines turned from deep scratches and
continuous scratches to discontinuous scratches and thinner scratches were obtained.
Key Words: Welding current, wear, hardness, coating.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 424 237 00 00 (6380)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S75
WELDING CURRENT EFFECT ON CHEMICAL COMPOSITON AND
MICROSTRUCTURE OF COATINGS
Mustafa Kaptanoglu*
Firat University, Engineering Faculty, Metallurgy and Materials Engineering, ELAZIĞ / TURKEY
In this study, welding tests were performed on SAE 1020 steel surfaces using submerged arc
welding (SAW) powders containing 16 % ferrochromium. In welding tests, 4 welding tests were carried
out using currents in the range of 400 - 550 A and the effect of current change on coatings obtained were
investigated. S1 welding wire (electrode), is combined with the submerged arc welding flux containing
ferrochromium in the welding test. SAE 1020 steel test plate surfaces used in welding tests were cleaned
and free from all kind of corrosive and other impurities before the welding tests; welding powders were
preheated at 350 °C for 1 hour to remove possible moisture. In submerged arc welding machine, the
voltage and welding speed are constant and the polarity of the machine is set to positive (+). Coatings
obtained in this respect were investigated with visual, microstructural, chemical and XRD analysis. As a
results of visual analysis, removal characteristic of slag formed by the partial melting of the welding
powder decreased, the homogeneity of the weld seam did not change significantly and there were no
welding faults such as porosity in the weld metal were obtained. On the other hand; increasing of welding
current, the amounts of chromium and carbon passing through the coatings increased, so that the amount
of phases, such as carbide and martensite, in coating microstructures also increased were obtained. The
coating the highest ratio of martensite and carbide phases using 550 A welding current and the coating the
lowest ratio of martensite and carbide phases using 400 A welding current were obtained.
Key Words: Coating, welding current, microstructure.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 424 237 00 00 (6380)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S76
INFLUENCES OF GLUCOSE AND STARCH ON CORROSION BEHAVIOR OF
GALVANIZED STEEL
Duygu KADAIFCILER1, Duygu ARSLAN*1, Nurhan CANSEVER2, Esra ILHAN-SUNGUR1 1Istanbul University, Faculty of Science, Biology Department, Vezneciler, ISTANBUL / TURKEY
2Yildiz Technical University, Faculty of Chemistry-Metallurgy, Metallurgical and Materials Engineering
Department, Esenler, ISTANBUL / TURKEY
Glucose and starch are non-toxic organic molecules whose characteristics are corrosion inhibitors
on different types of metallic materials [1-2]. Galvanized steel (GS) has widespread application in the
industry due to its excellent chemical, electrical and mechanical properties and especially corrosion
resistance. However, GS has been reported to be corroded by microorganisms [3]. Besides, there are
limited researches especially about fungal effects on corrosion. In our previous study, the corrosive effect
of Fusarium sp. fungus on GS was investigated by using Potato Dextrose Broth as medium over 3 days
[4]. However, to clarify the findings, it has been needed to determine that how glucose and starch in the
Potato Dextrose Broth affect the corrosion behavior of GS.
It was aimed to investigate the corrosion behavior of GS in glucose (2 %) and starch (0.4 %)
solutions by potentiodynamic polarization method. The experiments were carried out in acidic (pH 5.2)
glucose and starch solutions including NaCl (0.4 %) and the measurements were taken at certain time
intervals (0, 2, 4, 6, 8, 10, 24, 48, 72, 96, 120, 144, 168, 240, 336 h).
No significant changes were observed in Ecorr values of GS in both glucose and starch solutions
over exposure times. During the test, fluctuations in the corrosion rate of galvanized steel coupons were
observed. The maximum corrosion rate for glucose was found to be 3.72 mpy at 144 h and 3.36 mpy at
336 h for starch.
Key Words: Galvanized steel, Glucose, Starch, Potentiodynamic polarization test.
REFERENCES [1]. G. Kılınççeker, and T. Doğar, “THE INFLUENCES OF GLUCOSE ON CORROSION BEHAVIOUR OF
COPPER IN CHLORIDE SOLUTION,” Protection of Metals and Physical Chemistry of Surfaces, vol. 52,
no. 5, pp. 910–920, 2016.
[2]. B.P Charitha, and P. Rao, “STARCH AS AN ECOFRIENDLY GREEN INHIBITOR FOR CORROSION
CONTROL OF 6061-AL ALLOY,” Journal of Materials and Environmental Science, vol. 8, no. 1, pp.78-
89, 2017.
[3]. E. Sungur, and A. Çotuk, “MICROBIAL CORROSION OF GALVANIZED STEEL IN A SIMULATED
RECIRCULATING COOLING TOWER SYSTEM,” Corrosion Science, vol. 52, pp. 161-171, 2010.
[4]. D. Kadaifçiler, T. Ünsal, D. Arslan, E. Sungur, and N. Cansever, "THE EFFECT OF FUSARIUM SP. ON
MICROBIAL CORROSION BEHAVIOR OF GALVANIZED STEEL," Eurocorr 2017, Prague, Czech
Republic, 3-7 September 2017.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 212 4555700 (15072)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S77
INHIBITOR EFFECT OF 1-BENZYL-3-METHYLIMIDAZOLIUM
TETRAFLUOROBORATE ON MILD STEEL
Gökmen SIĞIRCIK*
Çukurova University, Chemistry Department, Sarıçam / ADANA / TURKEY
For common inhibitors adsorption capability determines its corrosion efficiency and the adsorptive
behavior are directly explained by molecular structure and size. Generally, the organic molecules
including aromaticity, electronegative groups and heteroatoms reveal better adsorption interaction with
metal surface. Thus, corrosion rate could be decrease with the use of inhibitor for industrial application
such as pickling, descaling and cleaning purposes [1,2]. As a result, benzyl group containing imidazolium
with tetrafluoroborate could be good molecule as corrosion inhibitor.
The inhibition effect of 1-benzyl-3-methylimidazolium tetrafluoroborate has been studied on mild
steel corrosion in acidic environment. For this aim, electrochemical impedance spectroscopy and
potentiodynamic techniques were utilized for different inhibitor concentrations to obtain quantitative data
about the influence on corrosion. The results showed that applied corrosion inhibitor reveals good
inhibition efficiency for steel corrosion.
Key Words: Corrosion inhibitor, acid solution, mild steel.
ACKNOWLEDGMENT
The author is greatly thankful to Çukurova University Research Fund.
REFERENCES
[1]. G. Sığırcık, D. Yildirim, T. Tüken, “Synthesis and inhibitory effect of N,N’-bis(1-
phenylethanol)ethylenediamine against steel corrosion in HCl Media”, Corrosion Science 120 (2017) 184-
193.
[2]. M. Abd El-Raouf, E.A. Khamis, M.T.H. Abou Kana, N.A. Negm, Electrochemical and quantum chemical
evaluation of new bis (coumarins) derivatives as corrosion inhibitors for carbon steel corrosion in 0.5 M
H2SO4, Journal of Molecular Liquids 255 (2018) 341-353.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 322 338 6081
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S80
INVESTIGATION of the OPERATING CONDITIONS on ELECTROLESS
NICKEL PLATING OVER ABS PLASTIC
Tuğba GÜRMEN ÖZÇELİK *1, Canan URAZ 1 1Ege University, Engineering Faculty, Chemical Engineering Department, Bornova / IZMIR / TURKEY
Electroless nickel plating is a process for depositing a nickel alloy from aqueous solutions onto a
substrate without the use of electric current. It differs from electroplating which depends on an external
source of direct current to reduce nickel ions in the electrolyte to nickel metal on the substrate. Electroless
nickel plating is a chemical process which reduces nickel ions in solution to nickel metal by chemical
reduction [1-3]. The aim of this study is to investigate the operating conditions of electroless nickel
plating over ABS plastic and determining the best plating conditions. Experimental study consists of four
parts as; preparation of materials, etching, coating and analysis. The effects of temperature and pH of the
plating bath, plating time and grinding paper size were investigated on nickel plating. Experiments were
carried out in the plating bath with 120, 240 and 320 grit size sandpapers, at 85-90-950C plating
temperatures, at 7-9-11 pH and 15-30-45 minutes of deposition times. The results of the experimental
studies analyzed by using Fischerscope X-Ray XDL-B System, X-ray Diffraction (XRD) and Scanning
Electron Microscopy (SEM). Due to the results of the experiments and analysis, the electroless nickel
plating on ABS plastic was a success.
Key Words: Electroless plating, ABS plastic, nickel plating.
REFERENCES
[1]. " Plating ", https://en.wikipedia.org/wiki/Plating.
[2]. C. Fukuhara, H. Ohkura, K. Gonohe, A. Igarashi, “Low-Temperature Water-Gas Shift Reaction of Plate-
Type Copper-Based Catalysts on an Aluminum Plate Prepared by Electroless Plating”,
AppliedCatalysis A: General, vol. 279, pp. 195-203, 2005.
[3]. J. Sudagar, L. Jianshe, S. Wei, "Electroless nickel, alloy,composite and nano coatings - A critical review",
Journal of Alloys and Compounds, vol. 571, pp. 183–204, 2013.
* Sorumlu Yazar
E-Mail: [email protected]
Phone: +90 232 311 14 86
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S81
ELECTROLESS METAL PLATING OVER ABS PLASTIC
Canan URAZ*1, Tuğba GÜRMEN ÖZÇELİK1 1Ege University, Engineering Faculty, Chemical Engineering Department, Bornova / İZMİR / TURKEY
Plating is used to decorate objects, for corrosion inhibition, to improve solder ability, to harden, to
improve wear ability, to reduce friction, to improve paint adhesion, to alter conductivity and for other
purposes [1]. Electroless plating is a fundamental step in the metal plating on the plastic [2-4]. In this
study, the electroless nickel and copper plating on Acrylonitrile butadiene styrene (ABS) were
investigated. The effects of the ionic liquids as catalyst, plating time and sanding paper size were
investigated on metal plating. Experiments were carried out with two different types of ionic liquids:
EMIC, 1-ethyl-3-methyl imidazolium chloride (C6H11N2Cl) and DCA, 1-ethyl 3-methylimidazolium
dicyanamide (C8H11N5) and with 120, 240, 320 and 500 grit sandpaper by applying sand attrition
process, and constant bath temperature as 60 ⁰C with 60,90,120,150 minutes of deposition times. Due to
the results, the copper plating on ABS plastic was a success. The surface morphology and amount of
deposit analysis were performed using the Fischerscope X-Ray XDL-B System, X-ray Diffraction (XRD)
and Scanning Electron Microscopy (SEM). Hence, it is determined that the maximum amount of deposit
is obtained in the sample which EMIC is used as catalyst with 150 min deposition time and 500 grit
sandpaper size.
Key Words: Electroless plating, ABS plastic, nickel plating, copper plating, ionic liquid.
REFERENCES
[1]. " Plating ", https://en.wikipedia.org/wiki/Plating.
[2]. W. Sha, X. Wu, K.G. Keong, Electroless Copper and Nickel-Phosphorus Plating, Woodhead Publishing,
2011.
[3]. M. Schlesinger, "Electroless deposition of nickel ". Modern Electroplating, 447-458, 2010.
[4]. J. Sudagar, L. Jianshe, S. Wei, "Electroless nickel, alloy,composite and nano coatings - A critical review",
Journal of Alloys and Compounds, vol. 571, pp. 183–204, 2013.
* Sorumlu Yazar
E-Mail: [email protected]
Phone: +90 232 311 14 92
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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CORROSION INHIBITION EFFICIENCY AND THEORETICAL STUDIES OF
BENZAMIDE AND THIOACETAMIDE
Seda G. SAGDINC*1, Sibel ZOR2, Elif YILDIZ2 1Kocaeli University, Physics Department, İzmit / KOCAELI/ TURKEY
2Kocaeli University, Chemistry Department, İzmit / KOCAELI/ TURKEY
Corrosion is one of the most important problems in the country's economy. Especially, a number
of methods prevent of aqueous medium corrosion are applied such as coating the metal to be protected
with a suitable metal, and using organic-inorganic inhibitors. In recent years, inhibitor studies have
become important in aqueous medium corrosion of metals [1,2]. In this study, benzamide and
thioacetamide containing amide (-NH2) groups as inhibitors were selected. Corrosion behaviors of
benzamide and thioacetamide were investigated at different concentration (10-5, 10-4, 10-3 and 10-2 M ) in
0.1 M NaCl solution by using potentiodynamic polarization method. Corrosion potentials (Ecorr) and
corrosion current densities (Icorr) were determined by Tafel polarization method. Surface coating
fractions with inhibitor efficiency (IE) were also calculated by using corrosion current density. Also,
adsorption free energy (∆𝐺𝑎𝑑𝑠0 ) and adsorption equilibrium constants (Kads) were determined from
Langmuir adsorption isotherm. Corrosion current densities of steel at 10-2 M inhibitor concentration in
0.1 M NaCl solution were determined at 303 K, 313 K, 323 K and 333 K, and the activation energies (Ea)
from the Arrhenius equation were calculated.
Corrosion inhibitive performance of benzamide and thioacetamide during the acidic corrosion of
steel surface was investigated using density functional theory DFT in gas and water phase. Quantum
chemical parameters such as the highest occupied molecular orbital energy (EHOMO),the lowest
unoccupied molecular orbital energy (ELUMO) , the energy band gap (∆EHOMO–LUMO), dipole moment (μD),
and other related parameters [ionization potential (𝐼), electron affinity (𝐴), electronegativity (𝜒),
chemical potential (𝜇𝑐), global chemical hardness (𝜂), softness (𝜎) and number of transferred electrons
(Δ𝑁)], were calculated for neutral and protonated forms. The theoretical results are in agreement with the
experimental data.
Key Words: amide derivatives, corrosion, inhibitor, quantum chemical calculations.
ACKNOWLEDGMENT
The authors would like to thank the Kocaeli University Research Fund for its financial support
(Grant No. 2012/4 – 2013/35).
REFERENCES
[1]. Badr, G. E. “The role of some thiosemicarbazide derivatives as corrosion inhibitors for C-steel in acid
media” Corros. Sci. 51, 2529−2536. 2009.
[2]. Vishwanatham, S.; Sinha, P. K. “Corrosion protection of N80 steel in HCl by condensation products of
aniline and phenol” Anti-Corros. Methods Mater. 56, 139−144, 2009.
* Sorumlu Yazar
E-Mail: [email protected]
Phone: +90 262 3032046
XVth International Corrosion Symposium
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CORROSION INHIBITION OF MILD STEEL IN 1M HCI SOLUTION BY
RHEUM RIBES L. (IŞGIN) FLOWER EXTRACTS
Fatma KAYA*1, İbrahim Halil GEÇIBESLER2, Ramazan SOLMAZ2
1Bingöl University, Science and Arts Faculty, Chemistry Department, 12000, BINGOL / TURKEY 2Bingöl University, Faculty of Health Sciences, Occupational Health and Safety Department, 12000,
BINGOL / TURKEY
The flowers of Rheum Ribes is dried inner side, macerated with methyl alcohol and filtrated to
produce plant extracts. Experimental isolates were prepared by distillation method and solvent (methyl
alcohol) were removed. The prepared Rheum Ribes isolates of 1000 ppm in 1 M HCI were applied to
the mild steel in room conditions and resistance was measured to determine the effect of inhibition. For
this purpose, the inhibitory potential of Rheum Ribes was investigated as an inhibitor of mild steel in 1 M
HCI using electrochemical impedance spectroscopy, linear polarization and potentiodynamic polarization
measurements. Surface morphology of mild steel in the inhibited and uninhibited solution was
investigated by SEM. The results of this measurements display that the protective layer formed on the
mild steel surface which is evidence of inhibition. Hydrophilic and hydrophobic properties of mild steel
surface were investigated by contact angles measurement and the surface angles are increased during
inhibition present the protective layer was formed and decrease metals react with water and corrosive
materials.
The experimental results and electrochemical parameters illustrate that Rheum Ribes extracts
increases the corrosion inhibition of mild steel in 1 M HCI solution and the protection efficiency
increases.
Key Words: Rheum Ribes Flower, green plant extracts, mild steel, corrosion inhibition.
ACKNOWLEDGMENT
Bu çalışma Bingöl Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimine (BÜBAP)
tarafından desteklenmiştir (Proje No: FEF.2017.00.012). Desteklerinden dolayı BÜBAP’a,
karakterizasyon ölçümleri için Bingöl Üniversitesi Merkezi Laboratuvara ve Kimya Bölümü’ne teşekkür
ederim.
* Corresponding Author
E-Mail: [email protected]
Phone:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S85
FARKLI DİFÜZYONEL KAPLAMALARIN NİTRİK ASİT ÇÖZELTİSİ
İÇERİSİNDEKİ KOROZYON DAVRANIŞLARI
Ali GÜNEN*1, Erdoğan KANCA1, Mehmet DEMİR1 1İskenderun Teknik Üniversitesi, İskenderun/ HATAY / TÜRKİYE
Bu çalışmada AISI 1060 çeliği 1000 °C’de 3 saat süre ile titanyumlama, borlama, vanadyumlama
difüzyonel kaplama işlerine tabi tutulmuştur. Kaplama işlemi ardından nununeler optik mikroskop, mikro
sertlik ve XRD analizleri ile incelenmiştir. Uygulanan ısıl işlemler sonucu elde edilen faz yapılarının
HNO3 ortamındaki korozyon davranışları incelenmiştir. Korozyon deneyleri ASTM-G31-72 standardına
göre %1, %5 %25 HNO3 asit çözeltisi içerisine numunelerin statik daldırma yöntemi ile daldırılması,
sonucu ağırlık kayıplarının 12 saat süre ile ölçülmesi yoluyla yapılmıştır. Korozyon testi sonrası
numunelerin yüzeyi optik mikroskop ile incelenmiştir. Korozyon sıvısı derişiminin artışı ile tüm
numunelerde kütle kayıplarının arttığı ancak meydana gelen artışın derşim oranına göre artmadığı tespit
edilmiştir. Kaplama işlemleri sayesinde AISI 1060 çeliğinin HNO3 asit çözeltisinin üç derişiminde de
(%1, %5, ve %25) korozyon dirençlerinde iyileşme sağlandığı tespit edilmiştir. En iyi korozyon direnci
sağlayan borlama işlemi AISI 304 çelikleri için bir alternatif oluşturma potansiyeline sahiptir.
Anahtar Kelimeler: Çelik, Borlama, Korozyon, Nitrik Asit.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon:
XVth International Corrosion Symposium
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S86
BORLAMA, TİTANYUMLAMA VE VANADYUMLAMA UYGULANMIŞ AISI
1060 ÇELİĞİNİN SÜLFÜRİK ASİT ÇÖZELTİSİ İÇERİSİNDEKİ KOROZYON
DAVRANIŞLARININ İNCELENMESİ
Ali GÜNEN*1, Zeki AYDIN2,İ. Hakkı KARAHAN3 1İskenderun Teknik Üniversitesi, İskenderun/ HATAY / TÜRKİYE
2Mustafa Kemal Üniversitesi, Kimya Bölümü, Antakya / HATAY /TÜRKİYE 3Mustafa Kemal Üniversitesi, Fizik Bölümü, Antakya / HATAY / TÜRKİYE
Bu çalışmada AISI 1060 çeliğine uygulanan üç farklı difüzyonel kaplamanın (Titanyumla,
Borlama ve Vanadyumlama) HF asit çözeltisi içerisindeki korozyon davranışları incelenmiştir. Korozyon
deneyleri ASTM-G31-72 standardına göre %1, %10 ve %25 H2SO4’lik asit çözeltisi içerisine
numunelerin statik daldırma yöntemi ile daldırılması, sonucu ağırlık kayıplarının 12 saat süre ile
ölçülmesi ve kaplamasız AISI 1060 kıyaslanması ile yapılmıştır. Korozyon testi sonrası numunelerin
yüzeyi SEM ile incelenmiş ve korozyon uğrayan yüzeylerden EDS analizleri alınmıştır. Korozyon testi
sonucunda tüm kaplama işlemleri ile korozyon direncinin işlemsiz numunenin korozyon direncine göre
iyileşme sağlandığı gözlemlenmiştir. Korozyon deneyine tabi tutulan numuneler arasında en az kütle
kaybı sırasıyla Titanyumlama, Borlama, Vanadyumlama ve kaplamasız AISI 1060 çeliği şeklinde
sıralanmıştır. Düşük yoğunluktaki asit çözeltilerinde karıncalanma tipi korozyon mekanizması meydana
gelmiş iken konsantrasyon artışı ile korozyon mekanizması çatlak korozyonu şekline dönüşmüştür.
Anahtar Kelimeler: Çelik, Kaplama, Korozyon, Statik Daldırma Testi.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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FARKLI DİFÜZYONEL KAPLAMALAR UYGULANMIŞ AISI 1060 ÇELİĞİNİN
HİDROFLORİK ASİT ÇÖZELTİSİ İÇERİSİNDEKİ KOROZYON
DAVRANIŞLARININ İNCELENMESİ
Ali GÜNEN1, Erdoğan KANCA1, Vedat YEĞİN*1 1İskenderun Teknik Üniversitesi, İskenderun/ HATAY / TÜRKİYE
Bu çalışmada AISI1060 çeliğine uygulanan üç farklı difüzyonel kaplamanın (Titanyumla, Borlama ve
Vanadyumlama) HF asit çözeltisi içerisindeki korozyon davranışları incelenmiştir. Korozyon deneyleri
ASTM-G31-72 standardına göre %1, %10 ve %40 HF’lik asit çözeltisi içerisine numunelerin statik
daldırma yöntemi ile daldırılması, sonucu ağırlık kayıplarının 12 saat süre ile ölçülmesi ve kaplamasız
AISI 1060 ve Inconel 625 alaşımı ile kıyaslanması ile yapılmıştır. Korozyon testi sonrası numunelerin
yüzeyi optik ile incelenmiştir. Korozyon testi sonucunda tüm kaplama işlemleri ile korozyon direncinin
işlemsiz numunenin korozyon direncine göre kötüleşme sağlandığı gözlemlenmiştir. Korozyon deneyine
tabi tutulan numuneler arasında en az kütle kaybı sırasıyla Inconel 625, AISI 1060, borlama,
titanyumlama, ve vanadyumlama işlemi uygulanmış çelik şeklinde sıralanmıştır. Kaplanmış numuneler
arasında en iyi korozyon direnci borlama işlemi sonucu elde edilmiştir.
Anahtar Kelimeler: Çelik, Kaplama, Korozyon.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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Ti6Al4V BİYOMEDİKAL İMPLANTLAR ÜZERİNE ELEKTROFORETİK
OLARAK DEPOLANAN HA/CTS BİYOKOMPOZİT KAPLAMALARIN
KOROZYON DİRENCİNİN İNCELENMESİ
Ali TOZAR*1, İsmail Hakkı KARAHAN1 1Mustafa Kemal Üniversitesi, Fen-Edebiyat Fakültesi, Fizik Bölümü, Antakya / HATAY / TÜRKİYE
Çoklu travmalar veya doğal yaşlanmadan dolayı insan vücudundaki kemiklerde en çok görülen
defekt kırılmalardır. Ortopedik cerrahide en sık kullanılan tedavi ise implantasyondur. Bu nedenle
biyomedikal alanda uygun metal ya da seramik malzemelere olan ihtiyaç gün geçtikçe artmaktadır.
Hastanın yaşam standartları açısından ise bir implantın uzun vade dayanımı oldukça büyük önem arz
etmektedir. Ti6Al4V alaşımları implantasyon için iyi bir alternatif olarak görülse de korozyona bağlı
olarak sağlığa zararlı metal salımı ve implant hatası riskleri halen tartışma konusudur. Bu tip
komplikasyonlar uygulanan implantın düzeltilmesi için revizyon cerrahisine ihtiyaç doğurur. Bu ise hasta
açısından istenmeyen bir durumdur.
Son yıllarda Ti6Al4V biyomedikal implantların, üstün kemik entegrasyonu nedeni ile hidroksiapatit
(HA) ile kaplanarak implantın biyouyumunu ve korozyon direncini arttırmaya yönelik kayda değer
çalışmalar yapılmaktadır. Ancak plazma sprey ve mikroark oksidasyonu gibi yüksek sıcaklık gerektiren
endüstriyel yöntemler HA’in çözünmesine neden olarak biyouyumluluğunu düşürmektedir. Elektroforetik
depolama oda sıcaklığında uygulanabilmesi, oldukça ekonomik olması ve kompleks yüzeylerin kolayca
kaplanabilmesi gibi avantajları sayesinde son yıllarda oldukça dikkat çekmeye başlamıştır.
Bu çalışmada biyomedikal Ti6Al4V alaşımları elektroforetik olarak hidroksiapatit/kitosan
(HA/CTS) biyokompozit malzemesiyle başarılı bir şekilde kaplanmıştır. Kaplama işleminde etanol,
isopropil alkol ve su içeren bir polielektrolit kullanılarak, kitosan konsantrasyonunun Ti6Al4V
alaşımların korozyon direnci üzerindeki etkisi elektrokimyasal karakterizasyon yöntemleriyle
incelenmiştir.
Şekil 4. Artan Kitosan konsantrasyonlarında elektroforetik olarak depolanan HA/CTS biyokompozit kaplamalarına ait Tafel
eğrileri.
Anahtar Kelimeler: Hidroksiapatit, kitosan, Ti6Al4V, korozyon.
TEŞEKKÜR
Bu çalışma Mustafa Kemal Üniversitesi Bilimsel araştırma projeleri koordinatörlüğü tarafından
mali olarak desteklenmiştir (Proje No: 13920).
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 326 222 2222 (1645)
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GALVANIC COUPLING BEHAVIOR BETWEEN TITANIUM BASED NITRIDE
COATINGS AND STEEL
Burcak AVCI1, Dilan ER1, Mustafa URGEN*1 1Istanbul Technical University, Metallurgical and Materials Engineering Department, Maslak / ISTANBUL /
TURKEY
Hard ceramic coatings such as TiN, CrN and TiAlN can be produced on various metallic
substrates by physical vapor deposition (PVD) techniques. Metallic substrate and ceramic coating
systems are commonly used to improve cutting, working and drilling tools. With PVD methods, wear,
corrosion and tribo-corrosion behavior of substrates are improved. However, PVD columnar structure and
intrinsic porosity of these coatings limits their usage as corrosion protective coatings. To improve their
corrosion resistance, few production strategies are used, such as coating in multilayers, adding corrosion
resistant layers in between the substrate and the coating and nanocomposite coatings.
Since these coatings are very good electronic conductors a possibility of establishment of a
galvanic cell between the substrate and the coating is expected. In most of the studies conducted on
corrosion protective behavior of these coatings this possibility is almost always mentioned. However, to
our knowledge this interaction hasn’t been studied thoroughly. This study investigates the galvanic
interaction between steel and TiN, TiAlN coatings. TiN and TiAlN coatings are deposited on inert
alumina substrates by CA-PVD. Potentiodynamic tests are done for steel and nitride coatings in deareated
0.1 N HCl. The polarization curves are then overlaid depending on various anode to cathode ratios. Zero
resistance ammeter (ZRA) tests in the same medium are also conducted with the similar anode to cathode
ratios. Finally, an empirical relation between electrode polarization and galvanic current is established.
Key Words: Cathodic arc PVD (CA-PVD), galvanic cell, TiN, TiAlN.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 212 258 6999
XVth International Corrosion Symposium
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ELOKSAL İŞLEMİ UYGULANAN ALÜMİNYUM ALAŞIMLARININ ASİDİK VE
ALKALİ ORTAMLARDA KOROZYON ÖZELLİKLERİNİN İNCELENMESİ
Fadime AKPINAR1, Furkan KALAN1, T. Çağrı ŞENOCAK1, Burak DİKİCİ1, K. Vefa EZİRMİK*1 1Atatürk Üniversitesi, Metalurji ve Malzeme Mühendisliği Bölümü, Yakutiye / ERZURUM / TÜRKİYE
Endüstriyel uygulamalar da yüksek dayanım-ağırlık oranı, iyi döküm özelliği ve düşük termal
genleşme özellikleri ile artan kullanım alanlarından dolayı, Al ve alaşımlarının korozyon direncini
arttırmak teknolojik açıdan büyük bir öneme sahiptir [1]. Alüminyumun üzerinde doğal olarak meydana
gelen ve koruyucu özelliğe sahip olan oksit tabakası, ince ve düzensiz bir yapıda bulunmaktadır.
Alüminyum ve alüminyum alaşımlarının saldırgan ortamlarda kullanımı sırasında bu oksit tabakasının
mekanik veya kimyasal olarak bozunması korozyon oluşumuna sebep olmaktadır [2]. Bu nedenle Al ve
alaşımlarının, yüzey özelliklerinin iyileştirilmesi gerekmektedir. Alüminyum ve alaşımlarının korozyon
direncini arttırmak için yüzey kaplamaları ve anodizasyon prosesi (eloksal işlemi) gibi çeşitli yüzey
modifikasyon teknikleri kullanılmaktadır. Ekonomik bir yöntem olan anodizasyon işlemi, yüzeyde
meydana gelen oksit tabakasının düzenli olarak büyümesine ve dolayısıyla korozyon direncinin
arttırılmasına katkı sağlamaktadır. Eloksal, alüminyum ve alaşımları üzerinde “alümina” olarak bilinen
koruyucu oksit tabakasının asidik elektrolit içerisinde elektrik akımı yardımıyla büyütüldüğü bir işlemdir.
Bu işlem sayesinde korozyon dayanımı ile birlikte sertlik ve aşınma direnci de iyileşmektedir [3].
Bu çalışmada AA-1050, AA-2024, AA-3003, AA-5083, AA-7072 ve AA-8079 alaşımlarının
korozyon dayanımını arttırmak için sülfürik asit ortamında eloksal işlemi yapılmıştır. Eloksal işlemi, 12-
25 volt potansiyel aralığında ve farklı sürelerde (30,45,60 dakika) gerçekleştirilmiştir. Numunelerin asidik
ve alkali ortamlardaki korozyon davranışları potansiyodinamik korozyon testleriyle karşılaştırmalı olarak
incelenmiştir. Korozyon öncesi ve sonrası yüzeylerde oluşan yapılar ve korozyon ürünleri optik
mikroskop, XRD, taramalı elektron mikroskobu ve EDS kullanılarak incelenmiştir.
Anahtar Kelimeler: Anodizasyon, alüminyum, korozyon.
KAYNAKLAR
[1]. J. R. Davis, Aluminum and Aluminum Alloys. Ohio:ASM international, 1999.
[2]. R. L. Twite and G. P. Bierwagen “REVIEW OF ALTERNATIVES TO CHROMATE FOR CORROSION
PROTECTION OF ALUMINUM AEROSPACE ALLOYS” Progress in organic coatings, 33(2), 91-100,
1998.
[3]. M. L. Cedeño ”EFFECT OF THE LAYER OF ANODIZED 7075-T6 ALUMINIUM CORROSION
PROPERTIES” In Journal of Physics: Conference Series IOP Publishing, Vol. 786, No. 1, p. 012032,
2017.
* Corresponding Author
E-Mail: [email protected]
Telephone: +90 442 231 6040
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EFFECT of CURRENT DENSITY on MATERIALS and CORROSION
PROPERTIES of FILMS PULSE ELECTRODEPOSITED FROM
PYROPHOSPHATE SOLUTIONS CONTAINING Cu and Zn IONS
Kağan YURDAL*, İsmail Hakkı KARAHAN
Hatay Mustafa Kemal University, Antakya / HATAY / TURKEY
Alloys containing copper and zinc, namely brass are ideal materials for many applications, including
corrosion protection, applications due to good mechanical properties, use as interlayer coating and substrate
material, hydrophobic surface formation. Another important property of this alloy system is “shape memory effect
(SME)”. Materials with shape memory property can be used in sensor and actuator applications.
Electrodeposition is a film fabrication technique which has many advantages such as possibility of
fabrication under athmospheric conditions and at room temperature, ease of laboratory and large scale fabrication.
Moreover, it has many process parameters, which can be used to obtain films with different properties. It is widely
used in fabrication of metallic coatings [1].
In this study, brass films were fabricated via pulse electrodeposition at different current densities ranging
from 5mA/cm2 to 50mA/cm2. Pyrophosphate based aqueous electrolytes were used. Electrolytes contained Cu and
Zn ion precursors to form Cu-Zn alloys. Each fabrication was carried out on two different kinds of steel substrates.
Plate substrates were used to make materials characterization including elemental composition, film morphology by
SEM, phase analysis by XRD. For corrosion tests, films with same process parameters were fabricated on steel
rods. Open circuit potential, electrochemical impendance spectroscopy (EIS) and Tafel experiments were employed
to reveal corrosion properties of coated steel specimens in 3.5wt% NaCl containing water medium. Effect of
deposition current density on resultant properties is discussed.
REFERENCE
[1]. K.Yurdal and İ.H.Karahan, “Phase Formation in Electrodeposited Cu-Zn Alloy Films Produced from
Ultrasonicated Solutions”, ACTA PHYSICA POLONICA A, vol.132, no. 3-II, pp.1091-1094, 2017
* Corresponding Author
E-Mail: [email protected]
Phone: +90 5327867783
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PHOENIX DACTYLIFERA ÇEKİRDEĞİNİN (HURMA ÇEKİRDEĞİ) ASİDİK
ORTAMDA KOROZYON İNHİBİTÖRÜ OLARAK DEĞERLENDİRİLMESİ
Ece ALTUNBAŞ ŞAHİN*1, Ramazan SOLMAZ*,2, İbrahim Halil GEÇİBESLER2, Gülfeza KARDAŞ*3 1Bingöl University, Genç Vocational School, Property Protection and Security Department, Civil Defense
and Firefighting Program, 12000, BİNGÖL / TURKEY 2Bingöl University, Faculty of Health Sciences, Occupational Health and Safety Department, 12000,
BİNGÖL / TURKEY 3Çukurova University, Science and Letters Faculty, Chemistry Department, 01330, Balcalı, ADANA /
TURKEY
Endüstride kullanılan sentetik organik inhibitörlerin çevreye verdikleri zarar her zaman endişe
konusu olmuştur. Bu inhibitörler hayati öneme sahip bazı organlara, böbreklere veya karaciğere geçici
veya kalıcı hasarlar verebilmekte veya biyokimyasal bir süreci bozarak vücuttaki bazı bölgelerde,r enzim
sistemlerinde sorunlara neden olabilmektedir. Bu toksik etkiler, doğal ürünlerin çevre dostu ve zararsız
olan antikorozif maddeler olarak kullanılmasına yol açmaktadır. Ekolojik farkındalık ve katı çevre
düzenlemelerinin ve çevre dostu süreçlerin geliştirilmesine ihtiyacının artması nedeniyle, daha önce
uygulanan inhibitörlerin yerine toksik olmayan alternatiflerin geliştirilmesi bu çalışmanın konusunu
oluşturmaktadır [1-2].
Bu çalışmada yumuşak çeliğin korozyonuna, ekonomik değeri olan çevre dostu doğal atıklardan biri
olan Phoenix dactylifera çekirdeğinin (hurma çekirdeği) inhibisyon etkinliği değişik elektrokimyasal,
mikroskobik, spektroskopik ve yüzey analiz teknikleri ile incelenmiştir.
Elektrokimyasal ölçümlerin sonuçları Phoenix dactylifera çekirdeğinin demirin 1,0 M HCl
içerisindeki korozyon hızını önemli ölçüde yavaşlattığını göstermiştir. SEM-EDX ve AFM
çalışmalarından yüzeyde homojen dağılımlı ve koruyucu bir filmin oluştuğu tespit edilmiştir.
Anahtar Kelimeler: İnhibitör, Doğal Atıklar, Yumuşak Çelik.
TEŞEKKÜR
Bu çalışma Bingöl Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimine (BÜBAP)
sunulan projenin ön denemelerinden üretilmiştir.
KAYNAKLAR
[1]. Büyüksagis A., Dilek M., Kargioğlu M., Physicochemical Problems of Materials Protection, 51, 861-
872,2015
[2]. Khaburs’kyi Y.M., Corrosion Resistance Properties of The Extracts pf Plants Raw Materials in Solutions
of Hydrochloric Acid, Materials Science, 51, 131-137,2016
*Sorumlu Yazar(lar)
E-Posta: [email protected], [email protected], [email protected]
Telefon: +90 426 216 0012 (3242 2546)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S95
THE CORROSIVE EFFECT OF IODINE SOLUTION IN DIFFERENT
CONCENTRATIONS USED FOR DISINFECTION OF SURGICAL
INSTRUMENTS
A. Tuncay ÖZYILMAZ1, V. Soydal ATASEVEN2, M. Alpay DEMİRAL*2, Çağla
SÜRMELİOĞLU1 1Hatay Mustafa Kemal University, Chemistry Department, Antakya / HATAY / TURKEY 2Hatay Mustafa Kemal University, Faculty of Veterinary, Antakya / HATAY / TURKEY
The surgical applications in general surgery, microsurgery and many other clinics used that preparation and
maintenance in care of instruments and accessories for reusable instruments have a very important place in animal
hospital applications. In the light of research and development studies and guidelines, the most suitable product and
method should be selected for effective cleaning, disinfection and maintenance of instruments.
Today, stainless steel, which is frequently preferred by many sanitarians the production of medical
instruments are seen as a very strong material that is never eroded. When users are observe that stainless steel can
be mechanically eroded by heat, or by special chemicals, in a variety of ways, then they are surpised. However, if
we understand its properties and how to use it properly, it is possible to use these materials for a long time.
Particularly sensitive and small sized of the microsurgical instruments should be carefully prepared for reuse. The
most important cause of wear of medical instruments is the formation of corrosion, which leads to great problems
in the process of reuse and shortens the life span and may result in the end for use.
In this study, the corrosion resistance of the iodine solution used for the disinfection of the scalpel was
investigated by diluting 1/1, 1/50 and 1/300 ratios and the corrosion resistance evaluated at 30th and 60th minutes
by AC impedance technique. It has been observed that the corrosion resistance of the scalpel immersed in the of the
most increased dilution of iodine solution is better.
Keywords: corrosion, iodine solution, scalpel, empedans
* Corresponding Author
E-Mail: [email protected]
Phone: +90 507 175 74 82
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September 26–28, 2018, Hatay Mustafa Kemal University
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S96
ROBOTIK TANDEM GAZALTI ARK KAYNAĞINDA KAYNAK İLERLEME
HIZ DEĞIŞIMININ MEKANIK VE KOROZYON DAVRANIŞLARINA OLAN
ETKISININ İNCELENMESI
R. ARICI *
Manisa Celal Bayar Üniversitesi, Akhisar MYO, Makine Bölümü, Akhisar / MANİSA / TÜRKİYE
Robotik tandem kaynağın en belirgin özelliği torcun içersinde konumlanan çift tel (tandem)
mekanizmasının olmasıdır. Bu sistem; tamamen robotik otomasyonla programlanabilen, birbirlerinden
bağımsız ve aynı anda iki telin iki farklı tel sürme düzeneği ile tek bir kaynak havuzunda birleşmesi
sonucu oluşan özel bir prosestir.
Günümüz makine imalat ve montajında verimlilik ve performans kriterleri göz önüne tutulduğunda
bu prosesin tercihi özellikle robotik kaynak uygulamalarında öne çıkmaktadır. Robotik kaynak
uygulamalarında doğru parametrelerin seçilmesi için işletmelerin yüzlerce deney yapmasına veya
istenilen parametreleri tek seferde tespit edebilme şansı, her zaman mümkün olması beklenilemez.
Özellikle, ince sacların gazaltı kaynak uygulamaları problemlidir. Bu çalışmada ince saclara robotik
tandem gazaltı kaynağı uygulanarak numunelerin mekanik ve elektrokimyasal korozyon özellikleri
karşılaştırılarak, en uygun kaynak ilerleme hız değişim aralıklarının tespit edilmesi amaçlanmıştır.
Bu çalışmada, robotik tandem gazaltı ark kaynağı (RT-GMAW) ile birleştirilen 3 mm kalınlığındaki
S235JR levhalardan elde edilen kaynaklı bölgelerin korozyon hızının değişimi araştırılmıştır. Kaynak
işlemi MG2 dolgu teli ve ARCO-10 koruyucu gaz ortamında CLOOS marka robotik kolun kumanda
mekanizması ile 100, 110, 120 ve 130 cm/da kaynak ilerleme hız (LWS) değerlerinde gerçekleştirilmiştir.
Kaynak ilerleme hız değişiminin korozyon hızına olan etkisi, Tafel ekstrapolasyon yöntemi uygulanarak
belirlenmiştir.
Numunelerin korozyona uğramayan ve uğramış yüzeylerin makro ve mikroskobik görünümleri
değerlendirilmiştir. Sonuç olarak, kaynak ilerleme hız değişiminin artmasıyla korozyon hızının da kısmen
arttığı gözlemlenmiştir.
Anahtar Kelimeler: tandem, gazaltı, elektrokimyasal, tafel eğrileri, kaynak ilerleme hızı.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S97
INHIBITION OF THE CORROSION OF ALUMINUM IN 1M HCL SOLUTION
BY TWO EXTRACT OF PLANTS
Z. AKOUNACH*1, M. BENMESSAOUD2, A. AL MOFARI3, S. EL HAJJAJI1 1Mohammed V University, Chemistry Department, RABAT/ MOROCCO
2Mohammed V University, High School of Technology, SALE / MOROCCO 3Amran University, Chemistry Department, SANAA / YEMEN
Aluminum and its alloys have been widely used in various industrial applications because of its
inherent merits, such as low density, excellent electrical and thermal conductivity and relatively good
corrosion resistance. Aluminum exhibits corrosion immunity in aqueous environments due to the
formation of a thin passive oxide film on its surface. This oxide film is susceptible to dissolve in highly
acidic environments because of its amphoteric characteristic [1].
The most effective method for protecting metals against corrosion is the use of inhibitors.Recently,
use of low-cost and eco-friendly products such as extracted compounds from leaves or seeds as corrosion
inhibitors for aluminum increased [2].
The aim of this work is to study the effect of water extracts of two plants on the corrosionof
aluminum alloy in 1M HCl solution. The techniques employed for corrosion inhibition are gasometry,
tafel polarization and electrochemical impedance spectroscopy (EIS). Chemical gasometry technique
showed that addition of water extracts to 1M hydrochloric acid solution decreases the volume of the
hydrogen gas evolved. The inhibition efficiency obtained from chemical and electrochemical tests were in
good agreement, it increases with increasing concentration of water extracts. The potentiodynamic
polarization experiment revealed that the water extracts are inhibitors of mixed-type and electrochemical
impedance spectroscopy (EIS) confirmed that changes in the impedance parameters are due to surface
adsorption. Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM-EDS) study
confirmed that the inhibition of corrosion of aluminum is through adsorption of the extracts molecules on
the surface of metal.
Key Words: Plants extracts, Corrosion inhibition, Green inhibitor, Electrochemical, Aluminum.
REFERENCES
[1]. M. Abdallah M. Sobhi, H.M. Altass, “Corrosion inhibition of aluminum in hydrochloric acid by
pyrazinamide derivatives ” J Mol Liq, vol. 223, pp. 1143-1150, 2016.
[2]. Y. Du, H. Wang, Y. Chen, H. Qi, W. Jiang, “Synthesis of baicalin derivatives as eco-friendly green
corrosion inhibitors for aluminum in hydrochloric acid solution”, J Environ Chem Eng, vol. 5, pp. 5891-
5901, 2017.
* Corresponding Author
E-Mail: [email protected]
Phone:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S100
INVESTIGATION of THE EFFECT of ADDITIVE and ELECTROLYTE
CONCENTRATIONS ON CORROSION and ELECTRICAL RESISTANCE of
POLYPYRROLE COATING by STATISTICAL EXPERIMENTAL DESIGN
TECHNIQUES
A. Tuncay OZYILMAZ1, Ibrahim FILAZI*1, A. Ebru AYDIN1, Cagla SURMELIOGLU1, Gul OZYILMAZ1
1Mustafa Kemal University, Chemistry Department, Antakya / HATAY / TURKEY
Conductive polymers are one of the most popular study subjects of researchers working about
corrosion protection. However, since electrochemical synthesis of these polymers depends on many
parameters, some kind research studies can be completed in a long time. In addition, classical methods
have a very limited work area. Experimental design techniques are a very effective solution to solve this
problem [1]–[7].
In this study, concentrations of lithium perchlorate, which is used for support electrolyte, and (E)-
chalcone, which is used for additive, on corrosion and electrical resistance of the polypyrrole film
synthesized on AISI316L surface from acetonitrile medium and the connection between these results
were investigated. For this purpose, an experiment set was designed using 22 factorial design technique
with three replications as connected to additive and support electrolyte concentrations. The experiments
were performed with 3 replicates as designed and pyrrole concentration was to be constant at 0.1 M for all
synthesis baths in the designs. The difference between the concentrations was entered to the program as 2
times for each chemical and pyrrole concentration was kept constant at 0.1 M for all synthesis baths. The
polypyrrole films were synthesized on the AISI SS316L from the baths prepared according to the
designed experiment by cyclic voltammetry technique at a scanning rate of 50 mV/s. The corrosion
performances of the electrodes were monitored in 3.5% sodium chloride aqueous solution by AC
impedance spectroscopy (EIS) for 240 hours. Impedance data after 240 hours were obtained were
modeled as equivalent electrical circuits in the ZView2 software. The electrical resistances (Rdc) of the
synthesized polypyrrole films were measured by Four Point Probe technique. The electrical resistance and
calculated corrosion resistance (Rcorr) values were entered in response to the designed run. Then, the
experimental design was analyzed with 2FI model to generate 3D response surface graph.
As result of the study, it was found that the lithium perchlorate concentration, which is the support
electrolyte in the bath, was effective at 61.35% on Rdc and 76.11% on Rcorr; (E)-chalcone concentration
was found to be effective at 19.73% on Rdc and 3.37 on Rcorr. The change in the value of both
concentrations affects the Rdc by 18,06% and Rcorr by 3.25%. ANOVA analysis confirms this. The
increase in the lithium perchlorate concentration increases the electrical conductivity and corrosion
resistance of the polymer film in all (E)-chalcone concentrations, while the increase in the (E)-chalcone
concentration at low lithium perchlorate concentration increases the electrical resistance and decreases
corrosion resistance of the polymer film. The increase in the lithium perchlorate concentration increases
the electrical conductivity and corrosion resistance of the polymer film in all (E)-chalcone concentrations,
* Corresponding Author
E-Mail: [email protected]
Phone: +90 326 245 5845 (1199)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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while looked at this behaviour in terms of (E)-chalcone concentration, similar behaviour is seen only at
high lithium perchlorate concentration. Like our previous study [4], the decrease in (E)-chalcone
concentration at low lithium perchlorate concentration leads to an increase in corrosion and electrical
resistance. As main result of the study, it was determined that SS/PPy+CHC polymer film had a direct
correlation between the corrosion resistance and its electrical resistance.
Key Words: (E)-chalcone, acetonitrile, pyrrole, corrosion, statistical design experiment, electropolymerization.
REFERENCES
[1] G. Özyılmaz, İ. Filazi, Ç. Sürmelioğlu, and A. T. Özyılmaz, “Application of Response Surface
Methodology for Synthesis of Polyaniline Film on ZnNiMo Alloy Coated Copper Surface,” in 8th
International Advanced Technologies Symposium Full Text Proceedings Book, 2017, pp. 1288–1295.
[2] R. H. Myers, D. C. Montgomery, and C. M. Anderson-Cook, Response surface methodology: Process and
product optimization using designed experiments, 3rd ed. New Jersey, USA: John Wiley & Sons, Inc.,
2009.
[3] A. Değirmencioğlu and A. Yazgı, “Tepki Yüzeyleri Metodolojisi ‘Optimizasyon Esaslı Çalışmalara İlişkin
Teorik Esaslar ve Tarımsal Mekanizasyon Uygulamaları,’” Tarım Makinaları Bilim. Derg., vol. 2, no. 2,
pp. 111–115, 2006.
[4] A. T. Özyılmaz, İ. Filazi, A. E. Aydın, Ç. Sürmelioğlu, and G. Özyılmaz, “Anticorrosive Behaviour of the
PPy Coating Synthesized in Presence of (E)-Chalcone Compound,” in UMTEB3 – 3rd International
Congress on Vocational and Technical Sciences Abstract Book, 2018, p. 677.
[5] M. Ates, “A review on conducting polymer coatings for corrosion protection,” J. Adhes. Sci. Technol., vol.
30, no. 14, pp. 1510–1536, Jul. 2016.
[6] P. P. Deshpande, N. G. Jadhav, V. J. Gelling, and D. Sazou, “Conducting polymers for corrosion
protection: A review,” J. Coatings Technol. Res., vol. 11, no. 4, pp. 473–494, Jul. 2014.
[7] A. T. Özyılmaz, M. Erbil, and B. Yazıcı, “The electrochemical synthesis of polyaniline on stainless steel
and its corrosion performance,” Curr. Appl. Phys., vol. 6, no. 1, pp. 1–9, Jan. 2006.
XVth International Corrosion Symposium
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S101
INVESTIGATION of CORROSION PERFORMANCE of POLY(o-ANISIDINE)
FILMS SYNTHESIZED ON ZnNi and ZnNiMo COATED COPPER SURFACE
A. Tuncay OZYILMAZ1, Ibrahim FILAZI*1, Cagla SURMELIOGLU1, Gul OZYILMAZ1 1Mustafa Kemal University, Chemistry Department, Antakya / HATAY / TURKEY
Molybdenum is seen as one of the important metals of the future by the Turkish mining industry
due to its some superior properties. Molybdenum studies have begun to increase in the material literature
due to the fact that they are chemically similar to chromium, but hexavalent molybdenum is less toxic
than hexavalent chromium. However, molybdenum cannot electrochemically coat alone onto a surface, it
needs to form an alloy. Zinc and its alloys with 8B group metals are the most commonly used alloys for
this purpose [1–4]. In this study, the corrosion resistance of the poly(o-anisidine) thin films synthesized
on zinc nickel and zinc nickel molybdenum alloys was investigated.
For this purpose, copper electrode was coated with 5 µm thickness zinc-nickel (ZnNi) and zinc-
nickel-molybdenum (ZnNiMo) alloys at 30 mA/cm2 current density in the citrate-sulphate bath [2], [5].
After that, poly(o-anisidine) (PoA) films were synthesized onto anodically passivated alloy surface at 20
mV/s scan rate by cyclic voltammetry in sodium oxalate medium containing 10 mM molybdate salt and
70 mM o-anisidine. The metallic characterization of the coated and uncoated electrodes was carried out
by linear sweep voltammetry technique. Corrosion performances were monitored with anodic polarization
curves and A.C. impedance spectroscopy in 3.5% aqueous sodium chloride solution. Morphological
investigation of electrodes was carried out with scanning electron microscope.
From the results, it was observed that, corrosion resistance of thin PoA film, which was synthesized
on Cu/ZnNiMo surface, was higher than that of Cu/ZnNi/PoA electrode. When SEM images were
examined, it was observed that ZnNiMo surface was composed homogeneous globular crystals, ZnNi
surface was composed of leafy heterogeneous crystals. These crystal structures caused change the
morphologies and corrosion behaviours of the poly(o-anisidine) films on the surface.
Key Words: copper, zinc–nickel–molybdenum, corrosion, molybdate, o-anisidine, electropolymerization.
ACKNOWLEDGMENT
This research is supported by the Hatay Mustafa Kemal University Coordinatorship of Scientific
Research Projects with Project No: 16680 and TUBITAK with Project No: 216Z151.
REFERENCES [1] V. Okyay, “Türkiye’nin Son Gözdesi Molibden,” Madencilik Türkiye Madencilik ve Yer Bilim. Derg.,
vol. 27, no. 4, pp. 104–110, 2012.
[2] J. Winiarski, A. Laszczyńska, and B. Szczygieł, “An electrochemical study on the influence of sodium
molybdate on electrodeposition process and phase composition of ternary Zn–Ni–Mo alloy coatings,”
Trans. IMF, vol. 93, no. 5, pp. 267–274, Sep. 2015.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 326 245 5845 (1199)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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[3] A. T. Özyılmaz, İ. Filazi, Ç. Sürmelioğlu, and G. Özyılmaz, “Poly(o-Anisidine) Films on ZnNiMo Alloy
Deposited Copper Electrode: Synthesis And Corrosion Performance,” in UMTEB3 – 3rd International
Congress on Vocational and Technical Sciences Abstract Book, 2018, p. 678.
[4] H. Kazimierczak, P. Ozga, Z. Świa̧tek, and E. Bielańska, “Characterisation of Zn-Mo alloy layers
electrodeposited from aqueous citrate solution,” J. Alloys Compd., vol. 578, pp. 82–89, Nov. 2013.
[5] A. T. Özyılmaz, Ç. Sürmelioğlu, İ. Filazi, and G. Özyılmaz, “Corrosion Behaviors of ZnNi and ZnNiMo
Alloy Coated Copper Electrodes,” in 8th International Advanced Technologies Symposium Full Text
Proceedings Book, 2017, pp. 1296–1301.
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S102
GIDA ENDÜSTRİSİNDE KOROZYONUN ETKİSİ
E. Sena KIRMIZIKAYA*1, İnci ÇINAR2 1 Kahramanmaraş Sütçü İmam Üniversitesi, Fen Bilimleri Enstitüsü, Biyomühendislik ve Bilimleri Anabilim Dalı
K.MARAŞ / TÜRKİYE 2 Kahramanmaraş Sütçü İmam Üniversitesi, Mühendislik-Mimarlık Fakültesi Gıda Mühendisliği Bölümü,
K.MARAŞ / TÜRKİYE
Korozyon, çevredeki malzemelerin kimyasal reaksiyonlar yoluyla aşamalı olarak yok edilmesi
veya bozulması olarak tanımlanmaktadır [1]. Endüstriyel yatırımların yanı sıra üretimin maliyetini
etkileyen en önemli faktördür [2]. Korozyon, birçok alanda olduğu gibi gıda endüstrilerinde de sorun
olmaktadır [3]. Gıdalar önemli miktarda su, organik asit, tuz, antosiyanin gibi bileşenler içermektedir.
Ancak bu bileşenler korozyona sebep olmakta veya hızlandırıcı rol oynamaktadır. Üründe meydana gelen
değişiklikler vakum kaybı, şişme ve sızıntıya neden olmaktadır. Ayrıca renk, doku ve duyusal
özelliklerini bozarak gıdanın görünüş, besin değeri ve raf ömrünü olumsuz etkilemektedir [4]. Dolayısıyla
korozyon kaynaklı hasarlarının zamanında saptanması ve ilerlemesinin kontrol altında tutulması
günümüzde önemli hale gelmiştir [2]. Literatürde gıda işletmelerinde karşılaşılan korozyon çalışmalarının
sınırlı kaldığı görülmüştür. Bu çalışmada son yıllarda gıda endüstrisinde yapılan korozyonlar çalışmaları
hakkında bilgi verilmesi amaçlanmaktadır.
Anahtar Kelimeler: Gıda, korozyon, aşınma, belirleme testleri.
KAYNAKLAR
[1]. R. Wang, M.M. Farid, “Corrosion and health aspects in ohmic cooking of beef meat patties”, Journal of
Food Engineering, 146, pp. 17-22, 2015.
[2]. “Korozyonun Tanımı, Önemi ve Korozyondan Kaynaklanan Ekonomik Kayıplar”, Sakarya Üniversitesi
Bilgi Sistemi, 2018. [Online]
Avaible: http://content.lms.sabis.sakarya.edu.tr/Uploads/66616/43170/1._hafta.pdf. [Accesssed:
05.07.2018]
[3]. S.U.Ofoegbu, P.U., Ofoegbu, S.I. Neife and B.A. Okorie, “Corrosion Behaviour of Steels in Nigerian Food
Processing Environments”, Journal of Applied Sciences and Environmental Management, 15(1), pp. 135-
139, 2011.
[4]. D.V. Toskovic, M.B. Rajkovic and D.D. Stanojevic, “Impact of Addvitives on Corrosion Rate of Cans
Filled with Pieces of Apricot”, Journal of Agricultural Sciences, 50(1), pp. 61-73, 2005.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S103
CORROSION PROPERTIES OF AUSTENITIC AND MARTENSITIC
STAINLESS STEELS PRODUCED BY POWDER METALLURGY METHOD
Ayşe Nur ACAR*1, Rasiha Nefise MUTLU 2, Abdul Kadir EKŞİ 3Ahmet EKİCİBİL4, Birgül YAZICI2
1Çukurova University, The Faculty of Ceyhan Engineering, The Department of Mechanical Engineering, ADANA,
TURKEY 2Çukurova University, The Faculty of Science and Letters, The Department of Chemistry, ADANA, TURKEY
3Çukurova University, The Faculty of Engineering Faculty, The Department of Mechanical Engineering, ADANA,
TURKEY 4Çukurova University, The Faculty of Science and Letters, The Department of Physics, ADANA, TURKEY
Powder metallurgy (P/M) method is widely attracted on the producing of stainless steel parts due
to provide high quality property components and cheap to the other production methods[1,2]. P/M
stainless steels parts applied when required corrosion resistance and aesthetic appearance. In this study; as
stainless steel type; austenitic and martensitic stainless steels were used. Austenitic stainless steel has at
least 10.5%Cr and principally austenite phase and presents good corrosion resistance and mechanical
properties, however, there is a high sensitivity to local corrosion in chloride mediums [3]. Martensitic
stainless steels have 11-14wt%Cr and 0.6wt%C and also possess industrial areas such as pumps, mixers
of chemical products where operating under corrosive environments [4].
In this study; the corrosion performances of austenitic and martensitic stainless steels prepared by
powder metallurgy method have been performed. Firstly; X2CrNiMo17-12-2 austenitic staınless steel and
X12Cr13 martensitic stainless steel were pressed on the 400 and 600MPa pressures using traditional
pressing technique and the pressed austenitic and martensitic stainless steel specimens were sintered at
1200°C temperature for an hour under Ar atmosphere. The corrosion performances of these stainless steel
specimens have been examined in 3.5% NaCl by using EIS and polarization techniques.EIS measurement
was performed for each 2 ,96 h and end of the 96 h current-potential curves were taken. These
measurements have been supported with scanning electron microscope (SEM) images, Energy Dispersive
X-ray Spectroscopy (EDS).
Key Words: Powder metallurgy, austenitic stainless steel, martensitic stainless steel, heat treatment,
corrosion resistance.
ACKNOWLEDGMENT
The authors are greatly thankful to Cukurova University research funding (FBA-2016-5249).
*Corresponding Author
E-Mail: [email protected]
Phone:
XVth International Corrosion Symposium
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REFERENCES
[1]. J. A. Cabral-Miramontes, J. D. O. Barceinas-Sánchez, C. A. Poblano-Salas, G. K. Pedraza-Basulto, D.
Nieves-Mendoza, P. C. Zambrano-Robledo, F. Almeraya-Calderón, J. G Chacón-Nava, CORROSİON
BEHAVIOR OF AISI 409Nb STAINLESS STEEL MANUFACTURED BY POWDER METALLURGY
EXPOSED IN H2SO4AND NaCl SOLUTIONS,International Journal of Electrochemical Science., 8
pp.564 – 577,2013
[2]. C. García, F. Martín, P. de Tiedra, L.G.Cambronero, PITTING CORROSION BEHAVIOUR OF PM
AUSTENITIC STAINLESS STEELS SINTERED IN NITROGEN–HYDROGEN ATMOSPHERE,
Corrosion Science 49 (2007) 1718–1736
[3]. O. A. Olaseinde, COMPARATIVE STUDY OF THE EFFECT OF TEMPERATURE ON THE
CORROSION BEHAVIOUR OF 2205 DUPLEX STAINLESS STEEL AND 316 AUSTENITIC
STAINLESS STEEL IN ACIDIC CHLORIDE ENVIRONMENT, Advances in Materials Physics and
Chemistry, 5, 185-190 2015.
[4]. Y. Samih, G.Marcos,, N. Stein, N. Allain, E. Fleury,C. Dong, T. Grosdidier, MICROSTRUCTURE
MODIFICATIONS AND ASSOCIATED HARDNESS AND CORROSION IMPROVEMENTS IN THE
AISI 420 MARTENSITIC STAINLESS STEEL TREATED BY HIGH CURRENT PULSED ELECTRON
BEAM (HCPEB), Surface & Coatings Technology 259, 737–745,2014
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S104
ELECTROCHEMICAL BEHAVIOR OF Ti6Al4V ALLOY IN SALT WATER AND
SIMULATED BODY FLUID
İrem Cemre TÜRÜ*1, Seda Aysel TEPE1, Ahmet YAYLI2, Nurhan CANSEVER1
1 Yildiz Technical University, Metallurgical and Materials Engineering Department, ISTANBUL / TURKEY 2 Çekmece Nuclear Research and Training Center, Küçükçekmece, ISTANBUL / TURKEY
Ti6Al4V alloys are metallic materials used in the manufacture of load bearing implants, especially
in the hip and knee joints, and in dental implants. The excellent properties such as strength / density ratio,
modulus of elasticity, corrosion resistance, biocompatibility, etc., increase their use.
The biocompatibility of metal parts is related to their corrosion in the body. Because the human
body contains various ions such as water, dissolved oxygen, protein, chloride and hydroxide, it creates a
very corrosive environment for metals and alloys used as biomaterials. Metallic materials are weakened
by corrosion in the body fluids, and more importantly, corrosion products can penetrate into the tissues
and damage the cells. For this reason, it is necessary for the implant materials to have a high corrosion
resistance and not be damaged due to surface deterioration in terms of patient health. The implant surface
is directly in contact with the living tissues in the body, and the tissue-implant interactions are dependent
on the surface properties of the implants. It is very rare that metallic-based biomaterials with good mass
properties have suitable surface characteristics at the same time.
In our study, the corrosion behavior of Ti6Al4V alloy have different surface roughness was
investigated electrochemically in salt water and simulated body fluid. Potentiodynamic polarization
method was used in electrochemical tests. Corrosion rate was calculated from corrosion current density
and the values in both environments are compared with each other. The metal surface was examined by
scanning electron microscopy.
Key Words: Ti6Al4V, simulated body fluid, electrochemical corrosion experiment.
REFERENCES
[1]. G. He, J. Eckert, Q.L. Dai, M.L. Sui, W. Löser and M. Hagiwara, “NANOSTRUCTURED TI-BASED
MULTI-COMPONENT ALLOYS WITH POTENTIAL FOR BIOMEDICAL APPLICATIONS,”
Biomaterials, 24 (28) pp 5115-5120, 2003.
[2]. C.T. Kwok, P.K. Wong, F.T. Cheng and H.C. Man, “CHARACTERIZATION AND CORROSION
BEHAVIOR OF HYDROXYAPATITE COATINGS ON Ti6Al4V FABRICATED BY
ELECTROPHORETIC DEPOSITION,” Applied Surface Science, 255, pp 6736–6744, 2009.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 212 383 4702
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S105
ASİDİK ORTAMIN BOR NİTRÜR (BN) NANO TAKVİYELİ EPOKSİ
KOMPOZİT MALZEMENİN AŞINMA DAVRANIŞINA ETKİSİNİN
İNCELENMESİ
Emine Feyza ŞÜKÜR1, Halil Burak KAYBAL2*, Hasan ULUS1, Ahmet AVCI3 1Konya Teknik Üniversitesi, Makine Mühendisliği Bölümü, KONYA / TÜRKİYE
2Amasya Üniversitesi, Makine Mühendisliği Bölümü, AMASYA / TÜRKİYE 3Necmettin Erbakan Üniversitesi, Biyomedikal Mühendisliği Bölümü, KONYA/ TÜRKİYE
Metallere göre üstün bir özellik sunması, kompozit malzemeleri tasarım ve güvenirlik için önemli
bir seçenek haline getirmiştir. Kompozit malzemeler, mukavemet/hafiflik oranlarının yanında yüksek
aşınma direnci ve korozif ortamlara olan yüksek dayanımları neticesinde, aşınan yüzeyler üzerinde ve
farklı şartlandırılmış ortamlarda kullanılabilirliğiyle de ilgi uyandırmaktadır. Tribolojik performans olarak
adlandırılan bu özellikleri, farklı takviye elemanları (cam, karbon, bazalt elyaf vb.), matris türleri (epoksi,
polyester, polipropilen, polivinilester vb.) ve matris içerisine yapılan parçacık katkıları (makro boyutta
dolgu malzemeleri, nano parçacıklar) sayesinde geliştirilebilmektedir. Polimer matrisli bir kompozit
malzemede, en basit kusurların matris malzemede görünme ihtimalinin daha yüksek olduğu
düşünüldüğünde; matris malzemede yapılan performans arttırıcı bir modifikasyon, aynı zamanda tüm
kompozit malzemeyi iyileştirebilmektedir.
Polimer matris modifikasyonunda, son yıllarda en çok kullanılan yöntemlerden biri de nano
parçacık ile matris malzemeye katkıda bulunmaktır. Bu çalışmada, kompozit malzemenin mekanik ve
termal özelliklerini arttırıcı bor nitrür (BN) nano takviyesi kullanılarak epoksi matrisli kompozit malzeme
(BN/Epoksi Kompozit) üretimi yapılmıştır. BN nano parçacığının seramik yapısından faydalanılarak
üretilen kompozit malzemenin aşınma özelliklerinin arttırılması amaçlanmıştır. Korozif ortama uyumu da
bilinen epoksi matrisli, BN nano parçacığı ile takviye edilen kompozit malzeme, şartlandırılmış asitli
ortama 21 gün süreyle bırakılarak, belirli zaman aralıklarında aşınma özellikleri kontrol edilmiş ve
normal ortama göre kıyaslamaları yapılmıştır. Hem normal ortamda hem de asit ortamında bekletilen
kompozit malzemelerin aşınma testleri pin on disk aşınma test cihazında sabit bir hızda ve üç farklı yük
altında, kuru ortamda gerçekleştirilmiştir.
Anahtar Kelimeler: Bor nitrür, pin on disk, aşınma, epoksi, asidik ortam.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 358 260 0067 (1492)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S106
KOROZİF ORTAMIN BAZALT ELYAF TAKVİYELİ EPOKSİ
KOMPOZİTLERİN TRİBOLOJİK ÖZELLİKLERİ ÜZERİNE ETKİSİ
Emine Feyza ŞÜKÜR*1, Gürol ÖNAL 1, Ahmet AVCI2
1Konya Teknik Üniversitesi, Makine Mühendisliği Bölümü, KONYA/TÜRKİYE 2Necmettin Erbakan Üniversitesi, Biyomedikal Mühendisliği Bölümü, KONYA/TÜRKİYE
Elyaf takviyeli kompozit malzemelerde yaygın olarak kullanılan cam, karbon ve aramid elyaf
tiplerinin tamamının petrol kaynaklı olmaları hem endüstriyel hem de akademik çalışmalarda
araştırmacıları doğal kaynaklardan elde edilebilecek elyaf çeşitlerini araştırmaya yönelterek,
sürdürülebilir kompozitlerin geliştirilmesi konusundaki çalışmaları arttırmıştır. Yer kabuğundaki
çatlaklar, yarıklar ya da volkan bacaları aracılığı ile yeryüzüne çıkan magmatik bir kayaç olan bazalttan
üretilen bazalt elyaf, mineral kaynaklı olması sebebiyle son yıllarda polimer kompozitlerde kullanılan
önemli elyaf takviyelerin başında gelmektedir. Bazalt elyaf, gelişmiş mekanik özelliklerinin yanında
kimyasal direncinin yüksek olması sebebiyle özellikle korozif ortam şartlarındaki mühendislik
uygulamalarında tercih edilmekte, bu durum bazalt kompozitlerin mekanik ve aşınma testlerinin gerçek
şartlara benzer korozif ortamlarda yapılması konusundaki gerekliliği ve ihtiyacı ortaya koymaktadır. Bu
ihtiyaçtan yola çıkarak, çalışmada korozif ortamın bazalt elyaf takviyeli epoksi kompozitlerin mekanik
özellikleri, sürtünme ve aşınma davranışları üzerine etkileri araştırılmıştır. Numuneler ortam sıcaklığında,
pin on disk aşınma test cihazında sabit hızda, iki farklı yük altında aşınmaya maruz bırakılmıştır.
Kompozit malzemeler kuru ortamda mekanik ve aşınma testlerine tabi tutulmuş, daha sonra 21 gün
boyunca korozif çözeltide bekletilmiş, belirli aralıklarla da testler tekrar edilmiştir. Çekme numunelerinin
kırılma yüzeyleri mikroskop görüntüleriyle incelenmiş, aşınma testleri sonunda aşınma yüzeylerinde
meydana gelen hasar mekanizmaları ise SEM görüntüleri yardımıyla yorumlanarak, bazalt elyaf takviyeli
epoksi kompozitlerin farklı korozif ortamların etkisindeki aşınma dirençleri birbiriyle kıyaslanmıştır.
Anahtar Kelimeler: Aşınma, bazalt elyaf, epoksi, korozif ortam.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 332 223 20 45
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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S107
INVESTIGATION OF THE CORROSION PROPERTIES OF ANODIZED AZ31
MAGNESIUM ALLOYS
Recep ÇATAR*1, Hikmet ALTUN2 1Bayburt University, Mechanical Engineering Department, Bayburt/ TURKEY
2 Atatürk University, Mechanical Engineering Department, Erzurum / TURKEY
Anodizing is one of the most commonly applied coating processes to protect Mg alloys from
corrosion. In this study, anodization were applied to AZ31 Mg alloys in three different solutions of 1 M
NaOH, based on silicate (5 g/l Na2SiO3 + 5 g/l KOH) and phosphate (5 g/l Na3PO4 + 5 g/l KOH) solution.
AZ31 Mg alloys were anodized in a 1 M NaOH solution at 100 V constant voltage for 10 minutes while
in silicate and phosphate based solutions were anodized at constant current of 0,140 A/cm2 to final
voltage of 450-470 V. As a result of the anodizing processes, ceramic coatings were obtained in all three
solutions. The electrochemical properties of anodized Mg alloys were determined by potentiodynamic
polarization method in 3,5% NaCl solution. The chemical composition and phase structure of the coating
were determined by scanning electron microscopy (SEM), electron dispersion X-ray spectroscopy (EDX)
and X-ray crystallography (XRD). As a result of the analysis, it is seen that the coating in the NaOH
solution is composed of the MgO compound at a high level, whereas the Mg2SiO3 and Mg3(PO4)2
compounds are also formed in the silicate and phosphate based solutions in addition to the MgO
compound, respectively. When the results of the electrochemical test are examined, the highest corrosion
resistant in silicate based solution is observed and at least the in NaOH solution is found.
Key Words: AZ31 Mg alloy, anodizing, corrosion
* Corresponding Author
E-Mail: [email protected]
Phone: +90 458 211 1177 (1664)
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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POSTER PRESENTATIONS
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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P2
ÇİNKO KAPLI ÇELİK TELLERİN KROMATLAMA İŞLEMİ İLE KOROZYON
DAYANIMININ ARTTIRILMASI
Okay ÖZÜPEK*1, Ömer Faruk ÖZKAN1, Mümin ÇITAK1 1 Kar-El Demir Tel San Tic. Ltd. Şti. Aliağa / İZMİR / TÜRKİYE
Sıcak daldırma galvanizleme işlemi demir çelik ürünlerini korozyona karşı korumak için maliyeti
ve uygulanabilirliği sayesinde en yaygın kullanılan bir yöntem olmuştur. Sıcak daldırma galvaniz ile
kaplanan çelik ürünlerde yüzeydeki çinko demire göre daha aktif olduğu için ortamda önce oksitlenerek
demirin korunmasını sağlar (katodik koruma). Artan maliyetler ve azalan hammadde kaynakları sebebiyle
SDG ürünlerin daha uzun süre dayanması için farklı alaşım ve kimyasallar uygulanarak korozyon
dayanımları arttırılmaktadır. Bu işlemlerden biriside kromatlamadır (pasivasyon). Bu işlem daha önce
çelik teller üzerinde uygulanmamıştır.
Bu çalışmada SAE 1006/1008 kalite filmaşinlerden çekilen 2,50mm, 3,00mm çelik tellerin SDG
işleminde çinko havuzundan sonra uygun kimyasal havuzuna daldırılmasıyla yüzeyindeki serbest çinko
pasive edilerek yüzeye uygun kromat tabakası kaplanması sağlanıp ve pasivasyon prosesinin çelik teller
üstüne uygulanabilirliği incelenmiştir. Alınan numunelere yapılan tuz testleri sonucunda standart üretim
SDG tellerin pasivasyon işleminden sonra korozyon dirençlerinin arttığı gözlenmiştir.
Anahtar Kelimeler: pasivasyon, kromatlama, korozyon dayanımı, çelik tellerde kromatlama
TEŞEKKÜR
Yönetim kurulu başkanımız Sn. Tunç Bakırel, Kar-El Demir Tel San. Tic. Ltd. Şti. çalışanları ve
Kar-El Demir tel Ar – Ge merkezi personellerine yardım ve desteklerinden dolayı teşekkür ederiz.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 232 625 1070 (161)
XVth International Corrosion Symposium
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0 50 100 150
-150
-100
-50
0
Z'
Z''
10 mm ohm cm2.z10 mm 1h fitresult.z5 mm ohm cm2.z5 mm 1h fitresult.z1 mm ohm cm2.z1 mm 1h fitresult.z05 mm ohm cm2.z05 mm 1h fitresult.z
0 5 10 15 20 25
-15
-10
-5
0
Z'
Z''
cm2 ms hcl 1 sa imp.txtcm2 ms hcl 1 sa imp fit.z
Z’ / Ω cm2
Z”
/ Ω
cm
2
Z”
/ Ω
cm
2
Z’ / Ω cm2
(a) (b)
LUMO
ΔE= 5.53 eV
HOMO
(b)
P4
THE INHIBITION OF 2,6-PYRIDINEDICARBOXYLIC ACID ON MILD STEEL:
EXPERIMENTAL AND COMPUTATIONAL INVESTIGATIONS
Burak AY*1, Başak DOĞRU MERT2, Emel YILDIZ1, Birgül YAZICI1 1Çukurova University, Chemistry Department, Sarıçam / ADANA / TURKEY
2Adana Science and Technology University, Energy Systems Engineering, Sarıçam / ADANA / TURKEY
The mild steel (MS), has been widely used in many industries, due to some properties such as,
affordability in economy and simple smelting process. The crucial problem of mild steel is that it is easy
to be corroded in acid pickling process, causing severely financial and industrial losses [1]. Especially in
closed-circuit systems and cleaning process, an effective way of protection of MS against corrosion, is the
addition of corrosion inhibitors. For this purpose, 2,6-pyridinedicarboxylic acid (PDCA) was used as
inhibitor in several concentrations (0.5, 1, 5 and 10 mM) in 0.5 M HCl and the corrosion behavior of MS
in absence and presence of PDCA, was investigated with the help of electrochemical impedance
spectroscopy and polarization measurements. Surface morphology was monitored by optical microscope.
The potential zero charge (pzc) measurements were obtained. The contact angles of water drop of surface
were determined by optical tensiometer. The Young-Laplace equation was used for calculations. The
quantum chemical calculations were achieved via DFT with the B3LYP/6-311++G (d, p) basis set. The
results showed that; adsorption of PDCA obeyed Langmuir isotherm, the inhibition efficiency (η) values
were 80.6 and 82.6% in presence of 10 mM PDCA, after 1 and 168 h immersion periods, respectively.
Figure 1. EIS results of MS (a) obtained in 0.5 M HCl solution (•)(inset) and containing 0.5 (Δ), 1 (□), 5 (◊) and 10 (o) mM
PDCA, after 1 hour immersion time. Solid lines show fitted lines. The HOMO and LUMO orbitals (b)
Key Words: DFT, contact angle, 2,6-pyridinedicarboxylic acid, inhibition.
REFERENCE
[1]. M. Goyal, S. Kumar, I. Bahadur, C. Verma, E.E. Ebenso, ORGANIC CORROSION INHIBITORS FOR
INDUSTRIAL CLEANING OF FERROUS AND NON-FERROUS METALS IN ACIDIC SOLUTIONS, Journal of
Molecular Liquids, vol. 256, no. 1, pp. 565-573, 2018
* Corresponding Author
E-Mail: [email protected]
Phone: +90 322 338 6081
XVth International Corrosion Symposium
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P5
THE USE of PAPAVER SOMNIFERUM L. PLANT EXTRACT AS CORROSION
INHIBITOR
Aysel BUYUKSAGIS*1, Meltem DİLEK2 1Afyon Kocatepe University, Chemistry Department, AFYONKARAHİSAR/ TURKEY
2Afyon Kocatepe Uni., Chemical Engineering Department, AFYONKARAHİSAR/ TURKEY
The corrosion inhibition and adsorption characteristics of the extract obtained from the plant
papaver somniferum L (PSL) by electrochemical methods at differet temperatures (25, 35 and 45 °C)
were investigated in 0,2 M HCl and 0,2 M HCl + x ppm PSL solutions on AISI 304 stainles steel (AISI
304 SS), ETIAL 150 aluminum alloy (ETIAL 150 Al) and copper. The best inhibition were obtained
containing 0,2 M HCl + 500 ppm PSL inhibitor concentration solutions. Surface observations of metals
after standing experiments were investigated by atomic force microscopy (AFM), scanning electron
microscopy (SEM) and energy scattering X-ray method EDX). The inhibition effect is increased with
increasing inhibitor concentration. Extract adsorbed on the surface of metals obeyed Langmuir
adsorption isotherm. Langmuir adsorption isotherms confirm the physical adsorption mechanism and the
inhibitor is a mixed type inhibitor. SEM images show cracks and pitting on the surfaces in extract free
solutions. AFM and SEM show thick dense film on metal surfaces in containing extract solutions. The
occuring film closed all the active corrosion sites on metals and inhibited corrosion mechanism. Some
thermodynamic and kinetic parameters for the adsorption process; Adsorption equilibrium constant
(Kads), Gibbs adsorption free energy (Gads), activation energy of corrosion reaction (Ea) were calculated
and discussed by using Tafel results. Arrhenius energies increased with increasing inhibitor
concentration. Activation energies and Gibbs free energies for the inhibition reactions were supported the
physical adsorption mechanism.
Key Wods: Papaver somniferum L , corrosion, inhibitor , stainless steel, copper , ETIAL 150 Al alloy.
ACKNOWLEDGEMENT
The authors appreciated A.K.U. BAP Unit. (Project No: 14FENED04).
* Corresponding Author
E-Mail: [email protected]
Phone:
XVth International Corrosion Symposium
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P8
EFFECT OF POTASSIUM DICHROMATE ON THE CORROSION INHIBITION
OF N80 STEEL IN ALBIEN WATER
F. CHELGHAM*1, S. BOUDJEMA2, N. BOUZID3, M. SAIDI1, A. BOUMAZA3 1Laboratoire de Valorisation et Promotion des Ressources Sahariennes, Université Kasd Merbah, 30000
Ouargla, ALGERIA 2Laboratoire de Catalyse et Synthèse en Chimie Organique, Faculté des sciences, Université de Tlemcen
1300, ALGERIA 3Structures, Properties and Inter Atomic Interactions Laboratory (LASPI2A), Faculty of Science and
technology, University of Abbes Laghrour, Khenchela 40000, ALGERIA
Electrochemical corrosion inhibition of steel die casting alloy N80 in albian water (aquifer water)
has been studied sing different electrochemical techniques. The inhibition efficiency (IE%) of Potassium
dichromate system in controlling corrosion of N80 steel in albien water. Data obtained from Tafel plot
showed that K2Cr2O7 could act as a mixed-type inhibitor with a reasonable protection efficiency of ~89 %
at 70 ppm. The results of impedance spectroscopy (EIS) confirm formulation consisting of 70 ppm of
K2Cr2O7 provides 88 % of inhibition efficiency. The adsorption behavior of the Potassium dichromate
(K2Cr2O7) constituents on carbon steel surface was well described following Langmuir adsorption
isotherm. Langmuir adsorption isotherm was found to fit well with the experimental data.
Key Words: N80 Carbon steel, Potassium dichromate (K2Cr2O7), EIS, Polarization, corrosion, Albian water.
* Corresponding Author
E-Mail: [email protected]
Phone:
XVth International Corrosion Symposium
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P11
ASİDİK ORTAM KOROZYON İNHİBİTÖRÜ OLARAK İKİ YENİ SCHİFF
BAZI; DENEYSEL ve TEORİK DEĞERLENDİRME
N. Mete KALELİ**, Mesutcan ŞAHİN, Kaan C. EMREGÜL
Ankara Üniversitesi, Fen Fakültesi, Kimya Bölümü, Hesaplamalı Kimya Araştırma Lab. ANKARA /
TÜRKİYE
Maliyetindeki avantaj gözönüne alınarak korozyona karşı mücadelede özellikle inhibitor
uygulamaları oldukça önem kazanmıştır. Mevcut sistemler üzerinde de kullanılabilirliği ekstra yatırım
gereksinimlerini de ortadan kaldırmakta ve maliyetleri bi rhayli azaltmaktadır. Özellikle petrol
endüstrisinde petrol saklama tanklarında ve nakil boru hatlarında temizlemede kullanılan %5’lik HCl
çözeltisi çeliğin korozyonuna neden olmakta ve tankların/boruların ömürlerini kısaltmakta, sistemin
verimini düşürmekte, oluşan bir takım reaksiyonlar ile insan sağlığı olumsuz yönde etkilenebilmekte hatta
can kaybına yol açabilmektedir.
Bu çalışmada sentezlenen yeni iki Schiff bazı olan 2,2'-(((((2-hidroksi propan-1,3-di-
il)bis(oksi))bis(2,1-fenilen)) bis(metaililiden)) bis(azaneililiden))dibenzonitril (PD) ve 2,2'-((((etan-1,2-di-
il-bis(oksi))bis(2,1-fenilen))bis(metanil-il-iliden))bis(azaneililiden)) dibenzo-nitril’in (ED), 2M HCl
ortamında, düşük karbonlu çelik üzerindeki inhibitör etkinliği, polarizasyon, Elektrokimyasal Empedans
Spektroskopisi, SEM yanısıra teorik hesaplama yoluyla araştırılmıştır.
Deneysel sonuçlar her iki yapının da 10-5-10-3 M derişim aralığından PD ve ED için sırasıyla %50-
97 ve %80-99 arasında inhibisyon verimi göstermiştir. Sıcaklık çalışmaları 298-328 K aralığında PD için
inhibisyon veriminin %95’e kadar düştüğü, ED için %98’e kadar düştüğü gözlenmiştir. Yapılan
termodinamik çalışmalar her iki bileşiğin asidik ortam için iyi bir inhibitör olduğu sonucunu ortaya
çıkarmıştır.
Teorik çalışmalar yukarıda elde edilen verileri desteklemekte olup aynı zamanda inhibisyon
mekanizmasının açıklanması yönünde iyi sonuçlar vermektedir. % inhibisyon değerlerinin
karşılaştırılmaları sonucunda incelenen bu iki bileşiğinin inhibisyon etkilerinin EHOMO, ELUMO, hardness,
softness, dipol moment, yükler vs. ile yakından ilişkili olduğu görülmüştür.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon:
XVth International Corrosion Symposium
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P13
ELECTROCHEMICAL AND THEORETICAL STUDIES ON INHIBITION OF
CARBON STEEL CORROSION BY NOVEL DERIVED THIAZOLE
Y. EL AOUFIR*1,2, Y. KERROUM1, S. SKAL1, H. LGAZ3, A. GUENBOUR1 1 Mohammed V University, Faculty of Sciences, Laboratory of Nanotechnology, Materials & the Environment /
RABAT / MOROCCO 2 Ibn Tofail University, Faculty of Sciences, Laboratory of Separation Processes/ KENITRA / MOROCCO
3Konkuk University, Department of Applied Bioscience / SEOUL / SOUTH KOREA
The corrosion inhibition properties of thiazole derivative (TZ) were investigated by weight loss,
electrochemical impedance the electrochemical impedance spectroscopy (EIS) and potentiodynamic
polarization methods. The results of electrochemical research revealed that the TZ was an effective
inhibitor in HCl medium. Tafel curves reveal that TZ was adsorbed on the metal surface by adsorption
mechanism and behave as mixed type inhibitor [1]. With the aim of extracting the parameters of the
electrochemical impedance spectroscopy an appropriate equivalent circuit model was offered. The
inhibition efficiency, η(%), increased with the increase in concentration inhibitor. The Among TZ
exhibited maximum efficiency of 95% at 10-3M. Langmuir adsorption isotherm was well fitted for the
adsorption of the inhibitor tested on carbon steel surface with a competitive physisorption and
chemisorption mechanism [2]. The temperature dependence of inhibition efficiency was explained by
considering thermodynamic parameters of adsorption and kinetic parameters of corrosion. The inhibition
mechanism was analyzed by the potential of zero charge (Epzc) measurement at the solution/metal
interface. The adsorption behaviour of the inhibitors tested on Fe (110) surface was investigated by
Monte Carlo simulations to verify their corrosion inhibition efficacies. Molecular dynamic simulation
revealed that the molecules can adsorb strongly onto the surface of iron in a near flat orientation.
Figure 1. Tafel curves for Carbon steel in HCl 1M in absence and presence of different concentration of inhibitor at 303 K.
* Corresponding Author
E-Mail: [email protected]
Phone:
XVth International Corrosion Symposium
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Key Words: Thiazole derivative, Carbon steel, 1 M HCl, EIS, Polarization.
REFERENCES
[1]. Dheeraj Singh Chauhana, K.R. Ansari, A.A. Sorour, M.A. Quraishi, H. Lgaz, R. Salghi,
“THIOSEMICARBAZIDE AND THIOCARBOHYDRAZIDE FUNCTIONALIZED CHITOSAN AS
ECOFRIENDLY CORROSION INHIBITORS FOR CARBON STEEL IN HYDROCHLORIC ACID
SOLUTION”, International Journal of Biological Macromolecules, vol. 107, pp. 1747–1757, 2018.
[2]. H. Lgaz, R. Salghi, S. Jodeh, B. Hammouti, “ EFFECT OF CLOZAPINE ON INHIBITION OF MILD
STEEL CORROSION IN 1.0 M HCl MEDIUM,” vol. 225, no. 1, pp. 271–280, 2017.
XVth International Corrosion Symposium
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P14
SYNTHESIS AND CHARACTERIZATION OF PANI/EPOXY/METAL OXIDE
NANOCOMPOITE USING TiO2 AND ZnO NANOPARTICLES,
INVESTIGATION OF ITS CORROSION PROTECTION BEHAVIOR ON L304
STEEL
Sibel ZOR, Nargiz ILMIEVA*
Kocaeli University Science-Art Faculty Chemistry Department, KOCAELI / TURKEY
Epoxy resins, a very important class of thermosetting polymers, are extensively used as a coating
material to protect the steel structures from corrosion [1].
In this work, polyaniline nanocomposites containing inorganic oxide nanoparticles such as TiO2
and ZnO nanocrystallites with different ratios (0.1 g and 1.0 g) on stainless steel surface were synthesized
through chemical polymerization in the presence of aniline and ammonium persulfate oxidant. The
resulting polymeric nanocomposites have been characterized by means of Fourier transform infrared
(FTIR) spectroscopy, X-ray diffraction pattern (XRD) methods. Microstructures of samples are analysed
by scanning electron microscopy (SEM). Moreover, transmission electron microscopy (TEM) was
employed to characterize PANI/ZnO and PANI/TiO2 polymeric nanocomposites. Also, thermal properties
were determined by thermal-gravimetric analysis (TGA) and differential scanning calorimetry (DSC).
PANI/ZnO and PANI/TiO2 nanocomposites were mixed with polyvinyl butyral (PVB) through a solution
mixing method. The obtained polymeric nanocomposites and epoxy resin applied in compliance with
technological rules in the polyaniline matrix for improving its mechanical and barrier properties. The
coated stainless-steel substrates were investigated using potentiodynamic (Tafel) polarization technique
and electrochemical impedance spectroscopy (EIS) in 3.5 wt% NaCl. The surface morphology of the
PANI/Epoxy/nano metal oxide thin films were evaluated by scanning electron microscopy (SEM) studies.
The results of this study clearly showed that PANI/Epoxy/metal oxide polymeric nanocomposite coatings
outstanding protected steel against corrosive environment even at low concentration.
Key Words: Corrosion, Epoxy resin, PANI Nanocomposite, Steel L304.
ACKNOWLEDGMENTS
This research was supported by Scientific Research Projects Unit of Kocaeli University for supporting this
present study under grant number 2016/065.
REFERENCES
[1]. Gongwen Tang, Kaiqiang Zhang, Zhishan Yan, Linrong Ma, Xin Huang, ‘‘A self-curing, thermosetting
resin based on epoxy and organic titanium chelate as an anticorrosive coating matrix for heat exchangers:
Preparation and properties’’, Progress in Organic Coatings, 102, 225-230, 2017.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 553 672 8715
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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P18
ELECTROCHEMICAL STUDIES OF 4-((4-BROMOBENZYLIDENE)AMINO)
BENZAMIDE (4-BAB) AS AN EFFICIENT CORROSION INHIBITOR FOR MILD
STEEL IN 1.0 M HCl
Fatih TEZCAN*1, Gurbet YERLIKAYA1, Asad MAHMOOD1, Gülfeza KARDAS1 1Çukurova University, Chemistry Department, ADANA / TURKEY
In many of corrosion studies, hydrochloric acid is used which has advantages including low-cost,
ease of use, and efficiency in contrast to mineral acids. However, because of the strong corrosive behavior
of hydrochloric acid, a protective surface layer for mild steel is inevitable [1]. Recently, researchers have
focused on designing of materials that can serve as protective layers on steel surface aiming to reduce the
rate of corrosion during industrial operations including pipeline systems, drilling, and processing of oil
and gas. For this purpose, a variety of organic inhibitors have been used including N, O and S atoms [2].
In the present work, a new S containing Schiff base 4-((4-bromobenzylidene)amino) benzamide (4-BAB)
was synthesized. The corrosion inhibition of 4-BAB on mild steel was studied in 1.0 M HCl solution
using conventional electrochemical methods such as potentiodynamic polarization, electrochemical
impedance spectroscopy (EIS), and linear polarization resistance (LPR). The obtained EIS and LPR
results showed that inhibition efficiency (η%) of 1.0 mM 4-BAB 93.4%, 94.5 %, respectively. The
corrosion rate was calculated 0.876 mg cm-2 h-1 by potentiodynamic polarization.
Figure 1. Nyquist plot of mild steel in 1.0 M HCl solution in the absence and presence of 4-BAB at 298K
Key Words: Schiff base, Corrosion Inhibitor, Mild steel.
ACKNOWLEDGMENT
This work was supported by Cukurova University Scientific Research Project (grant numbers:
FBA-2017-7056)
* Corresponding Author
E-Mail: [email protected]
Phone: +90 537 584 11 56
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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REFERENCES
[1]. Saha, S. K.; Dutta, A.; Ghosh, P.; Sukul, D.; Banerjee, P., Adsorption and corrosion inhibition effect of
Schiff base molecules on the mild steel surface in 1 M HCl medium: a combined experimental and
theoretical approach. PCCP 2015, 17 (8), 5679-5690.
[2]. R. Solmaz, Investigation of corrosion inhibition mechanism and stability of Vitamin B1 on mild steel in 0.5
M HCl solution, Corrosion Science, 81 (2014) 75-84.
XVth International Corrosion Symposium
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P22
CORROSION BEHAVIOUR of DLC FILM DEPOSITED on TiO2-NT by MW ECR
IN A SIMULATED BODY FLUID SOLUTION
Evrim BARAN *1, Zeynep BAZ2, Ramazan ESEN2, Birgül YAZICI3 1 Kilis 7 Aralık University/ Department of Mechanical Engineering, Advanced Technology Research
Center, KILIS / TURKEY
2 Cukurova University/ Department of Physics, ADANA / TURKEY 3 Cukurova University/ Department of Chemistry, ADANA / TURKEY
DLC having special properties such as chemical inertness, high hardness, low friction, high wear
resistance and corrosion resistance is extensively used in applications such as protective coatings [1]. In
present work, TiO2 nanotube (NT) was synthesized by the two-step anodization technique. Diamond like
carbon (DLC) was coated on the surface of as prepared TiO2-NT using MicroWave Electron Cyclotron
Resonance plasma system (MW ECR) at 7.5 min. The morphology, composition and structure of the
electrodes were examined by field emission scanning electron microscopy (FE-SEM), energy dispersive
X-ray spectroscopy (EDX) and X-ray diffraction (XRD). The results showed that when DLC was coated
on the surface of TiO2-NT, the top of nanotubes were partially open and the pore diameter of hexagonal
structure decreased from 64.6 nm to of 44.9 nm. On the other hand, the microhardness test and contact
angle measurements revealed that additions of DLC carbon have a positive effect on the mechanical
properties of TiO2-NT film. Corrosion behavior of TiO2-NT and DLC-TiO2-NT electrodes in Hank's
solution at 37 °C was investigated using open circuit potential, electrochemical impedance spectroscopy
(EIS) and potentiodynamic polarization techniques. EIS was used to monitor the corrosion evolution over
20 days in Hank's solution at 37 °C.
Figure 1. FE-SEM images (top and cross section views) of (a) TiO2-NT/DLC and (b) Electrochemical impedance results for
TiO2-NT/DLC
Key Words: Anodic oxidation, TiO2 nanotubes, DLC, Corrosion behavior, EIS, Hank's solution.
ACKNOWLEDGMENT
The authors are thankful to the Cukurova University and Kilis 7 University research funds for
their financial support.
REFERENCES
[1]. A. Zeng, V.F. Neto, J.J. Gracio, Q.H. Fan, Diamond-like carbon (DLC) films as electrochemical electrodes,
Diamond Relat. Mater. 43, 12-22, (2014).
* Corresponding Author
E-Mail: [email protected]
Phone: +90 3488142666 (1942)
(b) (a)
XVth International Corrosion Symposium
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P23
ROLE OF ECOLOGICAL INHIBITOR ON ABRASION CORROSION OF
STAINLESS STEEL IN POLLUTED PHOSPHORIC ACID
S. SKAL1*, Y. KERROUM1, Y. EL AOUFIR 1,2, A. GUENBOUR1, A. BELLAOUCHOU1, H. IDRISSI3
1Mohammed V University, Chemistry Department, RABAT / MOROCCO 2 Ibn Tofail University, Chemistry Department, KENITRA / MOROCCO
3National Institute of Applied Sciences, Chemistry Department, LYON / FRANCE
In the wet production phosphoric acid industry, the acid produced contains various impurities,
including halides, metal cations, and gypsum particles. As a result, stainless steels, commonly used, are
subjected to the combined action of corrosion, due to chemical impurities (F-, Cl-), and abrasion related to
solid particles of suspended gypsum[1]. The corrosion-abrasion of stainless steels is a complex
phenomenon. It depends on the nature of the material-environment interface, the physicochemical
properties of the passivity film and the characteristics of the impact. Often the potential of stainless steels
is due essentially to their ability to form protective layers on their surfaces. Thus the action of abrasion
causes a partial or total depassivation, reducing the protective power of the passive layers [2]. The use of
corrosion inhibitors is an original way to control the abrasion-corrosion of metals. The latter evaluated by
potentiodynamic measurements and the surfaces analyzed by UV-Vis-IR and SEM-EDX techniques.
Potentiodynamic electrochemical measurements indicated that the inhibition efficiency improves with the
presence of clay and that it is of the anodic inhibitor type. The UV-Vis-IR analysis indicates that the
amplitude of the absorption bands increases in the presence of an inhibitor which reveals the protection of
passive layer formed.
Figure 1. Potentiodynamic curves for a stainless steel electrode in contaminated 40 wt. % H3PO4 solutions without and with
different concentrations of inhibitor.
Key Words: Abrasion-corrosion, Inhibitor, Stainless steel.
REFERENCES [1]. M.Lassis, A.Mziane, N.Dadda, R.Rehamnia, “DISSOLUTION OF DJEBEL ONK PHOSPHATE ORE
USING SULURIC ACID, Environ.Nanotechnology, Monit. Manag., vol. 4, pp 12-16, 2015.
[2]. S. Skal, Y. Kerroum, A. Guenbour, A. Bellaouchou, H. Tabyaoui, H. Idrissi, A. Zarrouk, J. García-Antón,
EFFECT OF ABRASIVE PARTICLES ON ELECTROCHEMICAL BEHAVIOUR OF PASSIVE FILM
FORMED ON ALLOY 59 IN CONTAMINATED PHOSPHORIC ACID”, J. Mater. Environ. Sci., vol.8,
pp 3234-3246, 2017.
*Corresponding Author
E-Mail: [email protected]
Phone: +2126 62 02 40 56
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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P25
ETİLEN GLİKOLÜN %3.5 NaCl ORTAMINDA St37 ÇELİĞİNİN KOROZYON
MEKANİZMASINA ETKİSİNİN ARAŞTIRILMASI
Fatima Erman BAĞCI*1, Hüsnü GERENGİ1, Ertuğrul KAYA1 1Düzce Üniversitesi, Mühendislik Fakültesi, Korozyon Araştırma Laboratuvarı, DÜZCE / TÜRKİYE
Su ve atmosfer koşulları altında metal ve alaşımları korunma yapılmadığı takdirde korozyona
uğramaktadır. Korozyona uğrayan metal ve alaşımları geri dönülemez bir yola girerek çevre, sağlık ve
ekonomik olarak oldukça büyük maliyete neden olmaktadır [1]. Düşük karbon çeliği (St37), düşük
maliyeti ve yüksek üretimi nedeniyle metaller içerisinde yaygın olarak kullanılmaktadır [2]. İnşaat
sektöründe, makine yedek parçalarında ve otomobil radyatör ve parçalarında kullanılan St37 çeliği
klorürlü ortamda oldukça fazla korozyona uğramaktadır [3]. Metal ve alaşımlarını korozyona karşı
korumak için en ekonomik yol inhibitör kullanmaktır. İnhibitörler bulundukları ortamda genellikle
değişmeden kalmaktadır ve metal yüzeyini kapatarak metalin bulunduğu ortamla ara yüzeyinin direncini
arttırmaktadır [4]. Etilen glikol motor soğutucu sistemlerinde yaygın bir şekilde kullanılmaktadır ve
soğutucu sistemler genellikle klorür içerdiğinden soğutma sıvısı sisteminde kullanılan metallerin
korozyonunu arttırdığı bilinmektedir [5-7]. Bu çalışmada; etilen glikolün 25 oC de %3.5 NaCl ortamında
St37 çeliğinin korozyon mekanizmasına etkisi, 6 hafta boyunca kütle kaybı yöntemi ile araştırılmıştır
(Şekil 1). Elde edilen bulgular, 6 hafta sonunda %3.5 NaCl çözeltisi içerisinde bulunan St37 çeliğinden
yapılmış kuponların ortama ilave edilen etilen glikolün etkisiyle daha az korozyona uğradığını
göstermektedir. Kütle kaybı yöntemi kullanılarak elde edilen verilere göre metal yüzeyinde bariyer
oluşturan etilen glikol, St37 çeliğinin %3.5 NaCl ortamındaki korozyon mekanizmasını %85.26 oranında
inhibe ettiğini göstermektedir.
Şekil 1. %3.5 NaCl + %50 Etilen glikol çözeltisi içerisindeki St-37 kuponlarının kütle kaybı yöntemi.
Anahtar Kelimeler: etilen glikol, düşük karbon çeliği, kütle kaybı.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 3805424727
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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KAYNAKLAR
[1]. P. A. Schweitzer, Corrosion Engineering Handbook Second Edition, Fundamentals of Metallic Corrosion:
Atmospheric and Media Corrosion of Metals, CRC Press Taylor & Francis Group ISBN 978-0-8493-8243-
7.
[2]. H. Gerengi and H. I. Şahin, “Schinopsis lorentzii extract as a green corrosion inhibitor for low carbon steel
in 1 M HCl solution,” Industrial & Engineering Chemistry Research, vol. 51, pp. 780, 2012.
[3]. H. Gerengi, I. Uygur, M. Solomon, M. Yildiz, and H. Goksu, “Evaluation of the inhibitive effect of
diospyros kaki (Persimmon) leaves extract on St37 steel corrosion in acid medium,” Sustainable Chemistry
and Pharmacy, vol. 4, pp. 57– 66, 2016.
[4]. M. M. Solomon, H. Gerengi, T. Kaya and S. A. Umoren, “Enhanced corrosion inhibition effect of chitosan
for St37 in 15% H2SO4environment by silver nanoparticles,” International Journal of Biological
Macromolecules, vol. 104, pp. 638-649, 2017.
[5]. L. Y. Xu and Y. F. Cheng, “Electrochemical characterization and CFD simulation of flow-assisted
corrosion of aluminum alloy in ethylene glycol-water solution,” Corrosion Science, vol. 50, pp. 2094-2100,
2008.
[6]. H. Gerengi, M. M. Solomon, E. Kaya, F. E. Bağcı, E. J. Abai, “An evaluation of the anticorrosion effect of
ethylene glycol for AA7075-T6 alloy in 3.5% NaCl solution”, Measurement, vol. 116, pp. 264-272, 2018.
[7]. Fatima Erman Bağcı, Master’s thesis, Duzce University Institute of Science, Department of Chemistry,
“Determination of the potential use of ethylene glycol as a corrosion inhibitor in %3.5 NaCl”, May 2018.
XVth International Corrosion Symposium
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P26
CUCURBITA MASCHOLE (BALKABAĞI) KABUĞUNUN YUMUŞAK ÇELİĞİN
KOROZYONUNA İNHİBİSYON ETKİSİNİN İNCELENMESİ
Ramazan SOLMAZ*,1, Ece ALTUNBAŞ ŞAHİN*2, İbrahim Halil GEÇİBESLER1, Gülfeza KARDAŞ*3 1Bingöl University, Faculty of Health Sciences, Occupational Health and Safety Department, 12000,
BİNGÖL / TURKEY 2Bingöl University, Genç Vocational School, Property Protection and Security Department, Civil Defense
and Firefighting Program, 12000, BİNGÖL / TURKEY 3Çukurova University, Science and Letters Faculty, Chemistry Department, 01330, Balcalı, ADANA /
TURKEY
Korozyon inhibitörü olarak genellikle organik inhibitörler tercih edilse de [1-2], bu maddelerin
çoğu pahalı, çevre ve insan sağlığı için toksik özelliğe sahip olduklarından pratikte kullanımlarını
kısıtlamaktadır. Günümüzde; çevre dostu doğal ürünlerin antikorozif maddeler olarak kullanılabilirlikleri
ile ilgili çalışmalara önem verilmektedir [3].
Bu çalışmada yumuşak çeliğin korozyonuna, ekonomik değeri olan çevre dostu bazı doğal atıkların
inhibisyon etkisi araştırılmıştır. Bu amaçla, Cucurbita Maschole kabuğunun (balkabağı) 1,0 M HCl
çözeltisinde yumuşak çeliğin korozyonuna inhibisyon etkinsi Eocp-zaman, potansiyodinamik polarizasyon,
lineer polarizasyon direnci ve elektrokimyasal impedans spektroskopisi tekniklerinden yararlanılarak
araştırılmıştır. Metal yüzeyinde oluşan filmin karakterizasyonu SEM-EDX, AFM ve temas açısı
ölçümleri ile yapılmıştır. Elektrokimyasal ölçümlerin sonuçları Cucurbita Maschole kabuğunun 1,0 M
HCl çözeltisinde etkin bir inhibitör olduğunu göstermiştir. SEM ve AFM çalışmalarından yüzeyde oluşan
koruyucu bir filmin metalin çözünmesini yavaşlattığı tespit edilmiştir.
Anahtar Kelimeler: İnhibitör, Doğal Atıklar, Yumuşak Çelik.
TEŞEKKÜR: *Bu çalışma Bingöl Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimine
(BÜBAP) sunulan projenin ön denemelerinden üretilmiştir.
KAYNAKLAR
[1]. A. El Rehim S. Magdy S., Ibrahım A. M., Khalid K. T., The Inhibition of 4-(2-Amino-5-Methylphenylazo)
Antipyrine on Corrosion of Mild Steel in HCI Solution, Mater Chem Physics 70 262-273, 2001
[2]. El-Etre A.Y., Abdallah M., El-Tantawy Z.E., Corrosion inhibition of some metalsusing lawsonia extract,
Corros Sci 47, 385–395, 2005
[3]. Keny S.J., Kumbhar A.G., Thinaharan C., Venkateswaran G., Gallic Acid as a corrosiom inhibitor of
carbon steel in chemical decontamination formulation, Corr Sci 50, 411-419,2008
* Sorumlu Yazar(lar)
E-Posta: [email protected], [email protected], [email protected]
Telefon: +90 426 216 0012 (3242)
XVth International Corrosion Symposium
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P27
PASSIVE FILM OBTAINED BY ANODIZATION ON TI-CU (2%) ALLOY IN
PHOSPHORIC ACID
M. KHADIRI*1, 2, M. ELYAAGOUBI2, 3, R. IDOUHLI 1; Y. KOUMYA1; A. ABOUELFIDA1;
O. ZAKIR1, A. BENYAICH1, A. OUTZOURHIT2
1Physical Chemistry of Materials and Environment Laboratory, Department of Chemistry, Faculty of Science
Semlalia, University Cadi Ayyad, Marrakech, MOROCCO 2 Laboratory of Nanomaterials for Energy and the Environment (LN2E), Faculty of Sciences Semlalia
Marrakech, Cadi Ayyad University, BP 2390, MOROCCO 3Laboratory of Industrial Engineering Beni-Mellal TSF, BP 523, 23000 MOROCCO
Titanium and its alloys are very used in chemical industries, because of their corrosion resistance.
This resistance is due to the formation of an oxide film on their surfaces. The nature of the oxide film is
very controversial and depends on its formation technique.
The aim of the present work is to study the nature of the formed film on Ti-Cu (2%) by anodization
process in phosphoric acid 5M at different imposed potentials. The range of applied potential extends
from 200 to 1200 mV/SCE using a three electrode cell and from 5V to 35 V using a two electrode
configuration.
Nature of the obtained films are analyzed by X ray diffraction, their composition as well as the
oxidation state of titanium were investigated by XPS and EDS measurements. We have also study the
evolution of the thickness of the formed films with the applied potential in range of 5 to 35 V.
It is found that the film formed on the anodized surfaces is amorphous and thickens when the
applied potential increases. Thus, the oxidation state of titanium depends on the applied potential:
Mixture of Ti3+ and Ti4+ oxidation states when the anodization occurs at lower range of applied potential (
200 to 2000 mV/ SCE) while Ti4+ oxidation state becomes dominant at higher applied voltage.
Equivalent electric circuit of the formed film was investigated by electrochemical impedance
spectroscopy.
Key Words: Titanium, mott schottky, anodization, characterization.
* Corresponding Author
E-Mail: [email protected]
Phone:
XVth International Corrosion Symposium
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P29
PASLANMAZ ÇELİĞE KAPLANMIŞ POLİ(PİROL-KO-o-ANİSİDİN)KİTOSAN
KOMPOZİT FİLMİNİN KOROZYON PERFORMANSININ BELİRLENMESİ
Süleyman YALÇINKAYA*1, Didem ÇAKMAK1 1Mustafa Kemal Üniversitesi, Kimya Bölümü, Antakya / HATAY / TÜRKİYE
İletken polimerler, elektropolimerizasyon yöntemi ile doğrudan metal yüzeyinde ince ve homojen
filmler oluşturabilirler. Bu polimerlerin filmlerinin paslanmaz çelik yüzeyinde iyi bir korozyon
performansı sağladığı birçok çalışmada belirtilmiştir[1]. Bilindiği gibi çeliğin yüzeyinde bulunan doğal
krom(III) ve nikel oksit tabakası metali koruyucu bir etki sağlamaktadır. Ancak, bu tabaka oldukça poröz
bir yapıya sahip olduğundan özellikle Cl- gibi aktif iyonlar zamanla çukurcuk korozyonuna sebep olmakta
ve metalin bozulmasına yol açmaktadırlar. Buna karşın metal yüzeyine kaplanan iletken polimerler
yüzeyde bariyer etkisi yanında, gösterdikleri katalitik etki sayesinde metale anodik bir koruma
sağlamaktadırlar [2]. İletken polimerlerin özelliklerini geliştirmek için en çok başvurulan yollardan biri
kopolimer ve kompozitlerini hazırlamaktır. İletken polimerlerin kitosan gibi biyopolimerlerle kompozit
filmleri elde edilerek, sensör uygulamalarında destek materyal olarak kullanımıyla ilgili çalışmalar
literatürde mevcuttur [3]. Bunun yanında yapılan önceki çalışmalarda iletken polimere biyopolimer
katılarak elde edilen kompozit filminin oldukça homojen bir yapıda olduğu ve termal kararlılığının iletken
polimer filmine göre daha iyi olduğu belirtilmiştir[4]. Bilindiği gibi termal kararlılığın arttırılması
atmosferik korozyon açısından da oldukça önemlidir.
Bu çalışmada, poli(pirol-ko-o-anisidin)/kitosan kompozit filmi paslanmaz çeliğe dönüşümlü
voltametri tekniği kullanılarak kaplanmıştır. Kaplama işlemi 0,1 M monomer çözeltisi (pirol:o-anisidin
monomer oranı 1:1) katılmış 0,3 M okzalik asidin sulu çözeltisinde gerçekleştirilmiştir. Kompozit filmin
korozyon davranışları % 3,5 NaCl çözeltisinde EIS ölçümleri ve anodik polarizasyon eğrileri yardımıyla
araştırılmıştır. Elde edilen sonuçlar kompozit filminin iyi bir korozyon performansına sahip olduğunu
göstermiştir.
Anahtar Kelimeler: Pirol, o-anisidin, kitosan, kompozit, korozyon
KAYNAKLAR
[1]. G. Bereket, E. Hür, Y. Şahin, Electrochemical synthesis and anti-corrosive properties of polyaniline, poly (2-
anisidine), and poly (aniline-co-2-anisidine) films on stainless steel, Progress in Organic Coatings, 54, 63-72, 2005.
[2]. A.T. Özyılmaz, G. Kardaş, M. Erbil, B. Yazıcı, The corrosion performance of polyaniline on nickel plated mild steel,
Applied Surface Science, 242, 97-106, 2006.
[3]. S. Yalcınkaya, D. Cakmak “Electrochemical synthesis of poly(pyrrole-co-o-anisidine) / chitosan composite films”
Journal of Molecular Structure, 1135, 32-43,2017.
[4]. S. Yalçınkaya “ Electrochemical synthesis of poly(o-anisidine)/chitosan composite on platinum and mild steel
electrodes” Progress in Organic Coatings, 761, 81-187, 2013.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 326 245 5840(1133)
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P31
A NOVEL METHOD OF IMPROVED CORROSION RESISTANCE FOR STEEL:
ARTIFICIAL SUPERHYDROPHOBIC SURFACES PRODUCED BY NICKEL
ELECTROPLATING, ANODIC OXIDATION AND STEARIC ACID
TREATMENT
A. Cem BAŞKARACA1, A. Yücel SÖNMEZ1, E. Deniz UZ1, Can ASLAN1, Burçak AVCI1
Mustafa ÜRGEN*1 1İstanbul Technical University, Department, of Metallurgical and Materials Engineering,
34469, Maslak / İSTANBUL / TURKEY
Superhydrophobicity refers to the condition of extreme water repellency, characterized by water
contact angle (CA) greater than 150⁰. By making surfaces superhydrophobic, self-cleaning and anti-icing
properties of the material are improved.
With this study, we proposed a corrosion resistance improvement mechanism by producing
hierarchical structures on the metal surface. Two distinct approaches are taken. First one is to create a
rough structure on a hydrophobic surface (CA > 90⁰) and the second is chemically modifying properly
roughened surface with a material with low surface energy. Superhydrophobic coatings are deposited on
the electrolytic nickel coated steel substrate in three steps: Nickel is deposited on steel substrate
galvanostatically (5-6 A/dm2) for different times (5, 10 and 15 minutes). At the end of the coating process
surface morphology and coating thickness are characterized with SEM and XRF, respectively.
Afterwards, nickel coated steel substrate is anodically oxidized in molten KOH to obtain flower-like
hierarchical surface texture. Anodic oxidation of nickel plated samples are performed for 15 minutes at
200 oC. The surface texture of anodized sample characterized with SEM. Finally, chemical modification
of the anodized sample is completed by immersing into an ethanol stearic acid solution (0.01 mol/L) at
room temperature for 5 hours. After modification, FTIR analysis of the sample indicated the grafting of
stearic acid onto the surface. Moreover, static contact angle measurement is conducted and the contact
angle greater than 150⁰ is attained. Additionally, salt spray test results for 24 hours show that the
corrosion resistance of the produced superhydrophobic steel samples are improved by considerable
amount in neutral media.
Key Words: Superhydrophobicity, Nickel electroplating, Anodic oxidation of nickel, Steraric acid treatment,
Contact angle (CA).
ACKNOWLEDGMENT
The study has been realized by the undergraduate senior students of the Department of
Metallurgical and Materials Department of Istanbul Technical University as graduation design project.
Students that took part in this project sincerely acknowledge the contribution of the Faculty of the
Department to their academic education.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 212 285 6999
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P32
INVESTIGATION of CORROSION RESISTANCE of POLYPYRROLE FILM
SYNTHESIZED WITH LIMONENE ADDITIVE ON AISI 316L STEEL
A. Tuncay OZYILMAZ, Ibrahim FILAZI*, Ersen GOKTURK, Yusuf REYHANOGLU, Cagla SURMELIOGLU
Hatay Mustafa Kemal University, Chemistry Department, Antakya / HATAY / TURKEY
AISI 316L stainless steel (SS316L) is an alloy that is commonly used by the industry because of its
many superior properties. Although it successfully fulfills this anticipated alloy task to be resistant to
severe corrosive conditions, the metallic structure of the alloy requires more effective protection methods
in the long run. Conductive polymers are one of the most important research topics in the primary
literature to solve this problem. There are many successfully studies in the literature aimed at the use of
conductive polymers for the protection of SS316L from corrosion. One of the big advantages of polymers
is that different ions can be trapped in the matrix structures. In this way, corrosion resistance of
conductive polymers can be increased. This study aimed to increase the corrosion resistance of polymer
thin film by adding limonene to polypyrrole synthesis medium. Studies in the literature show that
limonene provides a successful inhibition effect at acidic corrosive conditions [1]–[7].
For the limonene added polymer thin film synthesis, limonene (Aldrich) at low concentrations
between 5 and 50 mM was added into the synthesis medium of acetonitrile containing 0.15 M LiClO4 and
0.1 M pyrrole. From this medium, a thin PPy and Lim+PPy films were synthesized on SS316L by cyclic
voltammetry technique applying scan rate of 50 mV/s. Corrosion performance of the obtained SS/PPy
and SS/Lim+PPy electrodes was evaluated in artificial seawater by AC impedance and anodic
polarization curve techniques. Also, structural characterization of polymer films was investigated by
FTIR and electrical resistance of films measured by Four Point Probe at 20 °C.
Figure 1. Chemical structure of limonene (dipentene)
As a result, it has been found after 192-hour immersion time in corrosive environment that the
corrosion resistance of the SS electrode coated with PPy film containing limonene (SS/Lim+PPy) is
rather high when compared with that of the SS/PPy electrode. The increase in limonene concentration has
been observed to slightly reduce corrosion resistance. When the electrical resistance is considered, it was
observed that the limonene additive increases the resistance.
Key Words: corrosion, SS316L, limonene, polypyrrole.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 326 245 5845 (1199)
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REFERENCES
[1] H. Bendaha, H. Elmsellem, A. Aouniti, M. Mimouni, A. Chetouani, and B. Hammouti, “Investigation of the
Corrosion-Resistant Properties of Citrus Aurantium Essential Oil in 1 M HCl,” Mater. Sci., vol. 52, no. 1, pp.
123–131, Jul. 2016.
[2] E. Chaieb, A. Bouyanzer, B. Hammouti, and M. Berrabah, “Limonene as green inhibitor for steel corrosion
in hydrochloric acid solutions,” Wuli Huaxue Xuebao/ Acta Phys. - Chim. Sin., vol. 25, no. 7, pp. 1254–1258,
2009.
[3] A. T. Özyılmaz, İ. Filazi, A. E. Aydın, Ç. Sürmelioğlu, and G. Özyılmaz, “Anticorrosive Behaviour of the
PPy Coating Synthesized in Presence of (E)-Chalcone Compound,” in UMTEB3 – 3rd International
Congress on Vocational and Technical Sciences Abstract Book, 2018, p. 677.
[4] A. T. Özyılmaz, A. E. Aydın, and A. Akdağ, “Anticorrosive properties with catalytic behaviour of primer
PANI film and top PPy coating synthesised in presence of novel norephedrine based amino alcohol
compound,” Trans. IMF, vol. 92, no. 1, pp. 34–40, Jan. 2014.
[5] M. Ates, “A review on conducting polymer coatings for corrosion protection,” J. Adhes. Sci. Technol., vol.
30, no. 14, pp. 1510–1536, Jul. 2016.
[6] M. B. González and S. B. Saidman, “Electrodeposition of polypyrrole on 316L stainless steel for corrosion
prevention,” Corros. Sci., vol. 53, no. 1, pp. 276–282, Jan. 2011.
[7] P. P. Deshpande, N. G. Jadhav, V. J. Gelling, and D. Sazou, “Conducting polymers for corrosion protection:
A review,” J. Coatings Technol. Res., vol. 11, no. 4, pp. 473–494, Jul. 2014.
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P33
CORROSION INHIBITION OF MILD STEEL WITH GREEN INHIBITORS IN
COOLING WATER SYSTEMS
İpek ÖZTÜRK1,2, Sebahat TOPAL*1, Turan ÖZTÜRK1, Esma SEZER1
1 Istanbul Technical University, Department of Chemistry, Maslak / ISTANBUL/ TURKEY 2 Kurita Europe GmbH, Giulinistr, LUDWIGSHAFEN / GERMANY
Corrosion is loss of metal caused by chemical, electrochemical, or biological reactions between the metal
and its surroundings and it is recognized as one of the most serious problems. Approximately1 to 6% of
the gross national product (GNP) of each nation goes to the annual corrosion costs [1-2]. The most
significant practical methods available for control of corrosion are i) protection related to materials(choice
of materials, appropriate design, conditioning the metal (protective coating and alloying)), ii) protection
related to medium (use of inhibitors), iii) protection with electrical applications (cathodic protection,
anodic protection). There is a lots of study on corrosion inhibitors that are less toxic and biodegradable
compared to current formulations. Green inhibitors displaying substantially improved environmental
properties will be the inhibitors most widely used in the future [3]. The present work is designed to
investigate the effect of tannic acid (TA), gallic acid (GA), ascorbic acid (AAc) and polyaspartic acid
(PASA) as green inhibitors for the corrosion inhibition of mild steel in decarbonized water as alone as a
binary mixtures and ternary mixtures by electrochemical techniques such as anodic and cathodic
polarization curves and electrochemical impedance spectroscopy (EIS). Corrosion behavior of mild steel
was investigated in the absence and presence of inhibitors in order to determine the optimum conditions.
EIS data was also analyzed by fitting to an equivalent electrical circuit model. Results suggested that
green inhibitors individually show high inhibition efficiency for mild steel corrosion in decarbonized
solution. Mixing of inhibitors for corrosion protection resulted in synergistic effect in case of only TA
and PASA mixture.
Figure 1. Potentiodynamic polarization curves (a) Nyquist plot (b) of mild steel in decarbonized water obtained in the
absence and presence and TA and PASA at pH=10.5.
Key Words: Mild steel, inhibitor, tannic acid, gallic acid, ascorbic acid, polyaspartic acid, decarbonized water,
cooling water systems, corrosion inhibition, electrochemistry.
* Corresponding Author
E-Mail: [email protected]
Phone:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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REFERENCES
[1]. Branko N. Popov, Corrosion Engineering Principles and Solved Problems, Elsevier, 2015,
[2]. Pierre R. Roberge Handbook of Corrosion Engineering, McGraw-Hill, NY, 1st ed.2000, 2nd edt 2012
[3]. Papavinasam, S. (2000). Corrison inhibitors, Uhlig’s Corrosion Handbook, 2nd ed., Canada: John Wiley &
Sons, 1089-1105.
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P34
THE CHLORIDE EFFECT ON THE BEHAVIOR OF BRASS IN ARTIFICIAL
DRINKING WATER
S. SKAL*1, M. NIHORIMBERE1, A. GUENBOUR1, A. BELLAOUCHOU1, M. HALIM1, M.
TABYAOUI1 1Mohammed V University, Chemistry Department, RABAT / MOROCCO
Corrosion of drinking water system components and plumbing is the main source of metallic
elements (lead, copper, cadmium, zinc, ...) in drinking water, and consequently a source of contaminants
to consumers and degradation of water quality [1]. Among the materials widely used in this system is
brass because of its very good corrosion resistance, durability, and cost[2]. The aim of our work is the
study the effect different concentrations of the chloride on the behavior of brass in artificial drinking
water. The latter evaluated by electrochemical measurements and analyzed by scanning electron
microscopy. Through the experimental results obtained, it can say that the chloride has a detrimental
effect on the brass surface which makes the medium very corrosive, that favorie the formation of a
corrosion product layer on the electrode surface. This was explained by the dezincification of tested brass
which illustrated in the images taken by the scanning electron microscope.
Figure 1. Potentiodynamic curves for a brass material in artificial drinking water with different concentrations of chloride.
Key Words: Corrosion, Brass, Artificial drinking water.
REFERENCES
[1]. S. Brossia, “CHAPTER 23 - CORROSION OF PIPES IN DRINKING WATER SYSTEMS”, Handbook of
Environmental Degradation of Materials (Third Edition), pp 489-505, 2018.
[2]. M. Nihorimbere, Y. Kerroum, A. Guenbour, M. Kacimi, A. Bellaouchou, R. Touir, A. Zarrouk,
“CORROSION INHIBITION OF BRASS IN ARTIFICIAL DRINKING WATER BY MINERAL
COMPOUND”, J. Mater. Environ. Sci., vol.8, pp 4121-4128, 2016.
* Corresponding Author
E-Mail: [email protected]
Phone: +2126 62 02 40 56
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P35
CORROSION INHIBITION OF BRASS ALLOY IN NaCl AND HCl SOLUTIONS
BY BIS-BENZIMIDAZOLE
Deniz Özge ÇOLAK*, Erhan KARACA, Merve UĞUR, Kadir PEKMEZ, Nuran ÖZÇIÇEK PEKMEZ
Hacettepe University, Dept. of Chemistry, 06800 ANKARA / TURKEY
The brass alloys have been most important materials in industry, which are used as a pipe material
in condensers and as a heat exchanger in cooling systems. They have valuable physical, mechanical
properties and good electrically and thermally conductive. However, copper has low corrosion resistance,
particularly in the presence of chloride anion [1]. Therefore protection of copper and its alloys from
corrosion is economically important. In the literature, these type alloys have been usually studied in
environments containing NaCl (3.5%) and HCl (3.5%). There are many kind of inhibitors help to slow
down corrosion [2]. The corrosion effective of an organic materials as inhibitor depends on its structure
and the stability of the chelate formed on the metal surface [3]. Especially, nitrogen compounds such as
imidazoles are known as corrosion inhibitors effective on copper and brass surfaces. Benzimidazole and
its derivatives are also widely used on copper and zinc surfaces [4].
In this study, bis-benzimidazole was examined as inhibitor for the brass surface in the NaCl and
HCl media. The synthesis of bis-benzimidazole was carried out by using oxamide and o-
Phenylenediamine. The corrosion performance of brass alloy was studied using Electrochemical
Impedance Spectroscopy in both solutions of 0.5 M NaCl and 0.5 M HCl. Inhibitor efficiencies of bis-
benzimidazole are found as 70% and 49% for brass surface in NaCl and HCl, respectively.
Consequently,bis-benzimidazole provides a cuprous complex on the metal surface which prevents further
copper dissolution.
Key Words: Corrosion, inhibitor, 1% NaCl, 3% HCl, bis- benzimidazole.
ACKNOWLEDGMENT
This study supported by The Scientific and Technological Research Council of Turkey under
Research Support Programme for University Students, 2209/A.
REFERENCES
[1]. Fan Y, Chen Z, Liang J, Wang Y, Chen H, Surf Coat Technol 244:1-8, 2014
[2]. Schweitzer PA, Fundamentals of Corrosion. CRC Press, USA ,2010
[3]. H.Gerengi, K. Darowicki, P. Slepski, G. Bereket, J. Ryl, J Solid State Electrochem (2010) 14:897–902
[4]. V. Lakshminarayanan, R. Kannan and S.R. Rajagopalan, Journal of Electroanalytical Chemistry, 364,79-86
798, 1994
* Sorumlu Yazar
E-Posta: [email protected]
Telefon: +90 505 9430088
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P36
INVESTIGATION of THE INHIBITIVE EFFECT of WATER-SOLUBLE SCHIFF
BASE on MILD STEEL in 1M HCI
Gizem GÜMÜŞGÖZ ÇELİK*1,2, Mehmet Burak KOCA2, Selahattin SERİN2
Birgül YAZICI2, Gülfeza KARDAŞ2 1Gebze Teknik Üniversitesi, Kimya, KOCAELİ/TÜRKİYE
2Çukurova Üniversitesi, Kimya, ADANA/TÜRKİYE
Mild Steel(MS) is used in many machines and equipment in the industry. The addition of certain
metals (Ni, Mo, etc.) to the MS and coating with a protective film on the surface causes the corrosion rate
to slow down in aggressive environment[1, 2]. However, the corrosion in the hydrochloric acid
environment is still a major problem. Organic compounds are used as corrosion inhibitors to reduce
corrosion on metal surfaces, particularly in acidic media[3]. The corrosion inhibitor properties of aromatic
ring compounds with electronegative heteroatoms such as S, N, O, P in the structure investigated and
effective results have been obtained[4].
Fig.1 X-Ray Structure of water-soluble Schiff base.
For this, the water-soluble Schiff base (WSS) shown in Fig.1 was synthesized by condensation
reaction of 2,5-diaminobenzene sulphonic acid and salicylaldehyde. The corrosion inhibition effect of
WSS on MS was investigated in 1 M HCl solution. The corrosion inhibition effect was studied by using
cathodic and anodic polarization curve and electrochemical ımpedance spectrometry (EIS), linear
polarization resistance (LPR). scanning electron microscopy (SEM), energy dispersive X-Ray
spectroscopy (EDX) techniques were utilized for characterization of surface morphology.
Key Words: Water Soluble, Schiff Base, Corrosion
* Corresponding Author
E-Mail: [email protected]
Phone:
XVth International Corrosion Symposium
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REFERENCES
[1]. N. Soltani, M. Behpour, S. M. Ghoreishi, and H. Naeimi, "Corrosion inhibition of mild steel in
hydrochloric acid solution by some double Schiff bases," Corrosion Science, vol. 52, no. 4, pp. 1351-1361,
2010.
[2]. B. D. Mert, A. O. Yüce, G. Kardaş, and B. Yazıcı, "Inhibition effect of 2-amino-4-methylpyridine on mild
steel corrosion: Experimental and theoretical investigation," Corrosion Science, vol. 85, pp. 287-295, 2014.
[3]. A. O. Yüce and G. Kardaş, "Adsorption and inhibition effect of 2-thiohydantoin on mild steel corrosion in
0.1M HCl," Corrosion Science, vol. 58, pp. 86-94, 2012.
[4]. H. Liu, L. Zhu, and Q. Zhao, "Schiff base compound as a corrosion inhibitor for mild steel in 1 M HCl,"
Research on Chemical Intermediates, vol. 41, no. 7, pp. 4943-4960, 2014.
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P38
KRANK MİLLERİNE UYGULANACAK ÖSTEMPERLEME ISIL İŞLEMİ
PROSESİNİN GELİŞTİRİLMESİ
A. ERKAN1, Ü. T. YILMAZ*1, G. SAĞLAM1, Ş. HELVACIOĞLU1 1DÖKSAN Isıl İşlem A.Ş. / AR-GE MERKEZİ, ANKARA / TÜRKİYE
Yüzyıllardır kullanılmakta olan dökme demirlerin geliştirilmesi, daha yüksek dayanım ve daha
düşük üretim maliyetlerini sağlamak için devam etmektedir. Östemperleme eşsıcaklıklı bir ısıl işlemle
anafazı beynite dönüştürmektir [1]. Östenitleme süre ve sıcaklığı, alaşım elementlerinin miktarı ve
östemperleme süre ve sıcaklığı, verilen bir bileşimdeki küresel grafitli dökme demirin östemperleme
sonucu elde edilecek mekanik özelliklerine doğrudan etki eder [2].
Bu çalışmada TSE EN1563 döküm standartına uygun küresel grafitli dökme demir olan GGG60
malzemeli parçalara östemperleme işlemi uygulanmıştır. Östemperleme ısıl işlemi prosesinde parçayı
istenilen mekanik özellikteki haline getirebilmek için uygulanan proseslerde parçanın ısınma sıcaklığı,
parçanın ısınma süresi, tuz banyosunun sıcaklığı, parçanın tuz banyosunda soğuma süresi, tuz
banyosunun homojen çözelti olması, parçanın havada soğumaya bırakılması gibi birçok parametre
dikkate alınarak fırın reçetesi oluşturulmuş ve bu doğrultuda işlemler yapılmıştır. Uygulanan ısıl işlem
prosesi Şekil 1 de verilmiştir.
Östemperleme sonucu matris yapısı değişen küresel grafitli dökme demirin mikroskoptan alınmış
mikroyapı görüntüsü Şekil-2’deki gibidir. Küresel grafitli dökme demirlerin östemperleme sonucu oluşan
mikroyapısına ösferrit adı verilir. Östemperleme işlemi yapılmış numune parçası çekme çubuğuna
dönüştürülmüş çekme mukavemeti, akma dayanımı, uzama ve aşınma testleri yapılmıştır.
Şekil 1. Östemperleme ısıl işlem prosesi Şekil 2. Ösferrit mikroyapı görüntüsü
Anahtar Kelimeler: Östemperlenmiş küresel grafitli dökme demir, GGG60, süneklik, krank mili.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon:
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KAYNAKLAR [1]. J.R., Keough (2001), “ADI: Ideal for High-Strength, High Wear Applications”,Engineering Casting
Solutions, 2001 (Winter), 42.
[2]. DORAZIL, E. (1991) “High Strength Austempered Ductile Cast Iron”, Technical University, Brno,
Czechoslovakia
[3]. E. Konca, K. Tur and E. Koç (2017), Effects of Alloying Elements (Mo, Ni, and Cu) on the
Austemperability of GGG-60 Ductile Cast Iron, Metals, 7,320-9
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P39
BIOCORROSION-BIOFILMS ACTION ON WATER WELLS IN IRRIGATED
ZONE (MIDDLE ATLAS – MOROCCO)
F. Zahra HAFIANE *1, L. TAHRI 11, K. ARIFI 11, H. El BOUZAIDI 11, R. ROCHDI 22,
M. FEKHAOUI 11
1Mohammed 5 University, Faculty of Science, Scientific Institute, Biologic Department, RABAT /RABAT/
MOROCCO 2 Ministry of Health, National Institute of Hygiene, RABAT /RABAT/ MOROCCO
Biofilm is an essential part of the process of degradation and perforation of pipelines and walls of
reservoirs, pipes clogged with bacterial corrosion products [1-2]. In this study, microbiologically
influenced corrosion (MIC) is a form of electrochemical corrosion that can be observed in many
environments, it will be to identify these bacteria to understand their mode of action. In the case of
corrosion of drinking water pipes, borehole pumping probes in center of Morocco in Khénifra-Béni
Mellal region at the irrigated perimeter [1]. In order to understand biocorrosion, the abundance and
activities of bacteria in biofilms, two hundred (200) samples were collected for four (4) seasonal
campaigns at the rate of forty tree (43) samples per season in irrigated zone, between March 2017 to May
2018. Those samples were analyzed to identify P. aeruginosa isolates, according to the ISO 6887- 2
standard method [3]. The study revealed a total of (n=85/139) isolated strains has identified as P.
aeruginosa representing 61.15 % of prevalence among Pseudomonas spp. While the high level of mean
densities varied in S21 from a minimum of 3,20E+01 CFU/mL to a maximum of 4,75E+04 CFU/mL, in
S29 from a minimum of 1,70E+03 CFU/mL to a maximum of 7,99E+03 CFU/mL, S40 from a minimum
of 1,02E+03 CFU/mL to a maximum of 8,50E+03 CFU/mL, and S26 from a minimum of 0,00E+00
CFU/mL to a maximum of 6,80E+03 CFU/mL. The generation of these concentration of biofilm is
distributed on all study area. Therefore, these bacteria cause pitting corrosion on the steel surface through
biofilm formation and further colonization P. aeruginosa, which could cause a health risk for the
sedentary population. The urgent attention will be given to the maintenance of wells canalisations before
consumption inadequate waters, to prevent their possible alteration or reduce the risk of biocorrosion.
Key words: Biocorrosion, P. aeruginosa biofilm, pipelines.
ACKNOWLEDGMENT
Authors are especially grateful to acknowledge the Department of agricultural development (DDA)
of Tadla and Department of irrigation and drainage network management (DGRID) of Tadla for his
assistance in this study. Authors also would like to acknowledge the staff for their kind help in sampling
collection.
* Corresponding Author
E-Mail : [email protected]
Phone: +212 682711400
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REFERENCES
[1]. A. Hammani, M. Kuper, I. A. V. H. Ii, and H. Ii, ‘Caractérisation des pompages des eaux souterraines dans
le Tadla, Maroc’, pp. 4–7, 2008.
[2]. J. Kadukova and P. Pristas, ‘Biocorrosion—Microbial Action’, Ref. Modul. Chem. Mol. Sci. Chem. Eng.,
pp. 20–27, 2017.
[3]. NM, ‘NM ISO., 16266, 2012. Moroccan standard ISO 16266. producing Pseudomonas aeruginosa.
International Water Quality: Detection and enumeration of Journal of Microbiological Research, 2(3): 208-
212. Pseudomonas aeruginosa. Classification index NM 7. Moritz, M’, Moroccan Inst. Stand., pp. 1–15,
2012.
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CORROSION BEHAVIOUR OF POLY(N-METHYLANILINE) FILM ON ZnNi
PLATED CARBON STEEL
Abdurrahman AKDAG*1, Ali Tuncay OZYILMAZ2 1Harran University, Vocational School of Health Services, SANLIURFA / TURKEY
2Hatay Mustafa Kemal University, Faculty of Arts and Sciences, Department of Chemistry, HATAY / TURKEY
Among the other protective coatings, zinc and zinc alloys (ZnFe, ZnCo, ZnNi) are widely used on
steel. Zinc alloys improved corrosion resistance compared to pure zinc in the protection of ferrous-based
metals. This is easily achieved by alloying Zn with more noble metals such as Fe, Ni and Co. The
development of conducting polymers as coating materials for corrosion protection of metals/alloys has
become a significant new research field. Among widely used conducting polymers for this purpose are
polyaniline and its derivatives as well as polypyrrole [1-3].
In this study, zinc–nickel (ZnNi) particles were electrochemically deposited on carbon steel (CS)
electrode applying current of 1 mA with chronopotentiometry technique. Homogenous and adherent
poly(N-methylaniline) film was synthesized with cyclic voltammetry technique from 0.02 M N-
methylaniline containing 0.20 M sodium oxalate solution on CS/ZnNi electrode. The characterization of
ZnNi deposited carbon steel electrode with and without poly(N-methylaniline) film have been
investigated by using AC impedance spectroscopy technique, linear sweep voltametry technique, anodic
polarization curves, corrosion potential-time curves and scanning electron microscopy. The results
showed that polymer film exhibited significant barrier property against the attack of corrosive agents.
Key Words: Poly(N-methylaniline), Corrosion, ZnNi, Electrochemical synthesis.
REFERENCES
[1]. Ozyilmaz, A.T., Akdag, A. Polyaniline, poly(N-methylaniline) and poly(aniline-co-N-methylaniline)
coatings on stainless steel Transaction of the Institue of Metal Finishing, 89(4):215-224, 2011.
[2]. Tan, C. K., Blackwood D. J., Corrosion protection by multilayered conducting polymer coatings.
Corrosion Science, 2003, 45:545-557.
[3]. Ozyilmaz, A.T., Akdag, A., Karahan I.H., Ozyilmaz G. The influence of polyaniline (PANI) coating on
corrosion behaviour of zinc–cobalt coated carbon steel electrodeProgress in Organic Coatings, 76:993-997,
2013.
* Corresponding Author
E-Mail: [email protected]
Phone:
XVth International Corrosion Symposium
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BACTERIAL CONTRIBUTION TO CORROSION: C. PERFRINGENS CASE IN
WATER WELLS IN IRRIGATED ZONE (MIDDLE ATLAS -MOROCCO)
L. TAHRI *1, F. Zahra HAFIANE 1, A. ELABIDI 2, A. SAIDI 1, I. NASSRI 2,
M. FEKHAOUI 1
1Mohammed 5 University, Faculty of Science, Scientific Institute, Biologic Department, RABAT /RABAT/
MOROCCO 2 Ministry of Health, National Institute of Hygiene, RABAT /RABAT/ MOROCCO
Microbiologically influenced corrosion (MIC) is a form of corrosion that can be observed in
environment. It is initiated, facilitated or accelerated by the presence of bacteria and mostly appears in the
form of localized pits and crevices on metal surfaces. However, the ability of Clostridium sulfite reducers
to colonize a new facility causing an increase in corrosion rate was indicated in this study, which took
place in central Morocco in the region Khenifra-Béni Mellal at the irrigated perimeter, we focused on
corrosion by Clostridium perfringens, which is manifested between these anaerobic bacteria capable of
transforming sulphates and sulphites to sulphides, and the materials on which they are attached [1-3]. The
presence of C.perfringens leads to an acceleration of corrosion by chemical processes in corroded places
(sewage systems, drilling pump...). In order to understand biocorrosion, the abundance and activities of c.
Perfringens, two hundred (200) samples were collected for four (4) seasonal campaigns (two rainy and
two dry) at the rate of forty tree (43) samples per season in irrigated zone, between March 2017 to May
2018. The TSC Agar method was used for identifying C. Perfringens strains, according to the ISO 64611-
1 standard method [2]. This study revealed a total of (n=145/200) isolated strains has identified as C.
Perfringens representing 72.5 % of prevalence. While the high level of mean densities varied in S2 from a
minimum of 5,00E+00 CFU/mL to a maximum of 3,00E+02 CFU/mL, in S24 from a minimum of
3,00E+01 CFU/mL to a maximum of 1,00E+02 CFU/mL, S41 from a minimum of 8,00E+00 CFU/mL to
a maximum of 2,50E+02 CFU/mL, and S12 from a minimum of 4,00E+00 CFU/mL to a maximum of
2,50E+02CFU/ml. It is clear that future work will have to be devoted to the treatment of drinking water
against bacterial contamination and also against corrosion. It is imperative to prevent their possible
alteration or reduce the risk of biocorrosion.
Key words: Biocorrosion, C. Perfringens, microbiologically influenced corrosion (MIC).
ACKNOWLEDGMENT
Authors are especially grateful to acknowledge the Department of agricultural development
(DDA) of Tadla and Department of irrigation and drainage network management (DGRID) of Tadla for
his assistance in this study. Authors also would like to acknowledge the staff for their kind help in
sampling collection.
* Corresponding Author
E-Mail : [email protected]
Phone : +212 614986394
XVth International Corrosion Symposium
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REFERENCES
[1]. ANSES, ‘Clostridium perfringens’, France, 2010.Maroc’, pp. 4–7, 2008.
[2]. NM, ‘Water quality - Detection and enumeration of the spores of sulfite-reducing anaerobes (clostridia)’,
2016.
[3]. M. Mana, K. Waldherr, and M. Kundi, ‘International Journal of Food Microbiology Evaluation of CP
Chromo Select Aga for the enumeration of Clostridium perfringens from water’, vol. 167, pp. 92–95, 2013.
XVth International Corrosion Symposium
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PİROL ve TİYOFEN SONLU SİKLOHEKZANON FORMALDEHİT REÇİNESİ
KOPOLİMERLERİNİN ÇELİĞİN KOROZYONUNU ÖNLEMEDEKİ ETKİLERİ
E. ATEŞ GÜVEL, N. KIZILCAN*, B. USTAMEHMETOĞLU, E. SEZER
İstanbul Teknik Üniversitesi, Kimya Bölümü, Maslak / İSTANBUL / TÜRKİYE
İletken polimer ve ketonik reçine kaplamaların özellikle demirli metallerin korozyonunu önlemede
etkili olduğu konusunda çalışmalar rapor edilmiştir [1-2]. Metal-iletken polimer ara yüzeyinde pasifleşme
veya bariyer etkisiyle korozyonu engellediği veya azalttığı düşünülmektedir.
Bu çalışmada pirol(Py) ile tiyofen(Th) sonlu siklohekzanon formaldehit reçinesinin (CFThnR)
kopolimerleri (PPy-b-CFThnR, n =2 ve 4) elektrokimyasal yöntem ile elde edilerek, çeliğin korozyonunu
önlemedeki etkileri, elektrokimyasal yöntemle elde edilen polipirol (PPy) ile karşılaştırmalı olarak
incelenmiş ve en etkili kaplama koşulları belirlenmiştir. Bu amaçla paslanmaz çelik(SS) elektrodun ve 16,
32, 64 döngü uygulanarak değişik kalınlıklarda kopolimer ile kaplanan elektrotların polarizasyon
ölçümleri ve elektrokimyasal empedans spektroskopisi ölçümleri (EIS) gerçekleştirilmiştir (Şekil 1). Bu
ölçümlerden sırasıyla Tafel ekstrapolasyon yöntemiyle korozyon akım(icor) ve potansiyelleri(Ecor),
polarizasyon direnci(Rp), kırılma noktası frekansi(fb), çift tabaka kapasitansı(Cdl) değerleri zamana bağlı
olarak elde edilerek karşılaştırılmıştır. Sonuçlar kopolimer kaplamaların, PPy kaplamalara göre daha
etkili olduğunu göstermektedir.
Şekil 5. % 3,5 NaCl çözeltisinde, SS/PPy16/PPy-b-CFTh2R kaplı elektrodun Tafel eğrilerinin (a) Nyquist diyagramlarının (b)
ve SS/PPy16/PPy-b-CFTh4R elektrodun Nyquist diyagramlarının (c) zamanla değişimi.
Anahtar Kelimeler: Polipirol, tiyofen(Th) sonlu siklohekzanon formaldehit(CF) reçinesinin, PPy-b-CFThR
kopolimerleri, antikorozif kaplama.
KAYNAKLAR
[1]. G. Lendvay-Gyorik, T. Pajkossy, B. Lengyel, “Water uptake of water-borne paint resin films as studied by
impedance spectroscopy and gravimetry” Prog. Organic Coat. 59, 95–99, 2007.
[2]. P. P. Deshpande, D. Sazou, Corrosion Protection of Metals by Intrinsically Conducting Polymers, New
York, CRC Press Taylor & Francis Group, 2016. S. Üneri, Korozyon ve önlenmesi. Ankara: Korozyon
Derneği, 1998.
* Sorumlu Yazar
E-Posta: [email protected]
Telefon:
XVth International Corrosion Symposium
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POLİPİROLÜN NaCl ve H2SO4 ORTAMINDA ÇELİĞİN KOROZYONUNU
ÖNLEMEDEKİ ETKİLERİNİN KARŞILAŞTIRMALI İNCELENMESİ
E. ATEŞ GÜVEL1, N. KIZILCAN1, B. USTAMEHMETOĞLU*1, E. SEZER1 1İstanbul Teknik Üniversitesi, Kimya Bölümü, Maslak / İSTANBUL / TÜRKİYE
İletken polimer çevre açısından toksik olmamaları sayesinde, korozyon önlemede kromata dayalı
kaplamalara alternatif olarak yaygın biçimde incelenmektedir [1-2].
Bu çalışmada polipirol (PPy) değişik sayıda döngüler (16, 32, 64 döngü) uygulanarak paslanmaz
çelik (SS) yüzeyine potansiyodinamik yöntemle kaplanmış ve korozyonu önlemedeki etkileri %3,5 NaCl
ve 0,5 M H2SO4 ortamlarında karşılaştırmalı olarak incelenmiş ve en etkili kaplama koşulları
belirlenmiştir. Bu amaçla SS elektrodun ve değişik kalınlıklarda PPy ile kaplanan elektrotların
polarizasyon ölçümleri ve elektrokimyasal empedans spektroskopisi ölçümleri (EIS) gerçekleştirilmiştir
(Şekil 1). Bu ölçümlerden zamana bağlı olarak elde edilen korozyon akım(icor) ve potansiyelleri (Ecor),
polarizasyon direnci (Rp), kırılma noktası frekansı(fb), çift tabaka kapasitansı(Cdl) değerleri
karşılaştırılmış ve optimum koşul belirlenmiştir. Sonuçlar, 0,5 M H2SO4 ortamında 64 döngü ile
kaplandığında, PPy’ün korozyon önlemede diğer kaplamalara göre daha etkili olduğunu göstermektedir.
Şekil 6. 0.5 M H2SO4 çözeltisinde, 16 döngü (SS/PPy16) (a) 32 döngü (SS/PPy32) (b) 64 döngü (SS/PPy64) (c) ile
kaplanan elektrotların Nyquist diyagramlarının zamanla değişimi.
Anahtar Kelimeler: Polipirol, antikorozif kaplama, polarizasyon ve empedans ölçümleri.
KAYNAKLAR
[1]. E. Armelin, R. Oliver, F. Liesa, J. I. Iribarren, F. Estrany, C. Aleman, “Marine paint fomulations:
Conducting polymers as anticorrosive additives” Prog. Organic Coat. 59, 46-52, 2007.
[2]. P. P. Deshpande, D. Sazou, Corrosion Protection of Metals by Intrinsically Conducting Polymers, New
York, CRC Press Taylor & Francis Group, 2016
* Sorumlu Yazar
E-Posta: [email protected]
Telefon:
XVth International Corrosion Symposium
September 26–28, 2018, Hatay Mustafa Kemal University
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P48
THE SYNTHESIS OF SILICON CARBIDE FILM ON ALUMINA CERAMICS
Yusuf NUR*1, E. Gizem BAYOL1 1Mustafa Kemal University, Chemistry Department, Antakya / HATAY / TURKEY
Polymeric precursors being an important class of polymers are the interface between polymers and
ceramics. They can be easily converted to ceramic materials upon moderate heating. The most important
properties of these polymers are to form tough, hard-wearing ceramic materials with high thermal
stabilities. Poly(methyl silyne) (PMSi) [1] and polyhydridocarbyne (PHC) [2] are the most famous pre-
ceramic polymers. PMSi can be easily converted to silicon carbide (SiC) [1] ceramics on pyrolysis, while
PHC forms diamond and diamond-like carbon (DLC). Poly(silyne-co hydridocarbyne) (PSC) simply
forms silicon carbide without requiring the addition of more carbon species and a catalyst since it already
contains silicon and organic carbon on its backbone (Scheme 1). Due to solubility of PSC in common
organic solvents, it can be easily coated to alumina ceramics in desired thickness. Then, this PSC film
formed SiC film on an alumina ceramics under inert atmosphere upon moderate heating. This ceramic
film was characterized via SEM and Raman spectroscopy.
Figüre 1: Schematic representation of the electrochemical synthesis of PSC.
UV/Vis spectroscopy, 1H-NMR and GPC analyses were proved the structure of PSC as shown in
Fig. 1. Heat treatment of PSC produces a hard crystalline substance in high yield; typically in the range of
30-50%, depending on pyrolysis temperature. Pyrolysis at 1000oC (SiC1) and 750oC (SiC2), respectively,
resulted in about 35% yield ceramic, while the material at 500oC (SiC3) under Ar atmosphere was
obtained in 48% yield. According to The wide angle X-ray powder diffraction (XRD) analysis, while
SiC3 was X-ray amorphous, the samples produced at higher temperature, SiC1 and SiC2, were
crystalline, and their reflections were consistent with the mixture of 3H-SiC, 4H-SiC, 5H-, 6H- and 24R-
SiC. These crystalline samples are mostly composed of 5H- and 6H SiC, which results are consistent with
ICDD, the Raman analyses.
Key Words: Electropolymerization, pre-ceramic polymer, silicon carbide, ceramic.
ACKNOWLEDGMENT
This study was supported by TUBITAK with project number 211T108, and by MKU-BAP with
project number 14421.
REFERENCES
[1]. L. A. Vermeulen, K. Smith, and J. Wang, "Electrochemical Polymerization of Alkyltrichlorosilane Monomers to
Form Branched Si Backbone Polymers," Electrochimica Acta, vol. 45, pp. 1007-1014, 1999.
[2]. Y. Nur and L. Toppare, "Synthesis of Poly(silyne-co-hydridocarbyne) for Silicon Carbide Production," Journal of
Macromolecular Science, Part A, vol. 50, pp. 923-930, 2013.
* Corresponding Author
E-Mail: [email protected]
Phone: +90 533 7483548
ISBN: 978-975-7989-61-5