Shock activation of green mixtures for SHS production

of Si–CSi–C composites

Sergey Skiba, Gh. G. PakSergey Skiba, Gh. G. Pak

XII International symposium on explosive production of new materials: science, technology, business and innovations

(EPNM-2014)

Cracow 2014

Si + C = SiC+Q

System Q, кДж/кg Tad, К,

Ti + B 2770 25005Ti + 3Si 1790 2350

Ti + C 2990 3070Tа + C 670 2550Si + C 73 1800

Methods of increase reactionary ability of Si-C system

SHS in additional electric field

SHS systems Si-C in the environment of nitrogen

Chemical activation of SHS process

Mechanical activation of initial mix

SHS with preliminary heating of a reactionary layer

Heat and combustion temperature for some SHS sytems

Increase of reaction ability

1 –electrical detonator; 2 – charge of ES; 3 – plate-piston; 4 – activated powder; 5 – container of conservation; 6 – plate-basic; 7 - ground; 8 –elements for fixation weld gap.

Parameters 1 2 3 4

Тhickness of plates-foundation, мм 12

Height of ES, мм 60 60 65 65Height weld gap, мм 2 3

23

Detonation velosity, м/s

3600

Percussion velosityдарения, м/s

600 670 700 750

Share of the reflected wave, % 20

Progress of SHS process

- - + +

SShock-wave activationhock-wave activation

Before activation

Microstructure of Si-C powder

After activation

E-mail: metal@pnzgu.ru

Тел./fax. : 8 (8412) 38 84 93

XII International symposium on explosive production of new materials: science, technology, business and innovations

(EPNM-2014)

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