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1Confidential
B4C Technologies, Inc.
Technology Overview
2Confidential
• B4C Technologies, Inc. has developed a commercially viable Thermal Boron Diffusion (TBD) process which uses chemistry and heat to produce a hard and slick Intermetallic non-brittle Boride layer at the surface of metal parts.
• The TBD surface provides permanent lubrication regardless of load.
• TBD hardness is 1800-2300 Knoop (70 Rockwell C = 972 Knoop).
• Process produces no change in part dimension or surface finish.
• Chemistry and processes are environmentally benign, no hazardous waste is produced.
• Ideal replacement for Hexavalent hard chrome, iron nitriding, PVD, CVD, HVOF, carbonitriding, and boronizing.
• No potential of bond failure.
• No increase in brittleness- excellent impact resistance.
• Impervious to hydrochloric and sulfuric acids.
• Process is repeatable, scalable, and transferable.
OVERVIEW
Confidential 3
B4C THERMAL BORON DIFFUSION
Typical structure of TBD on low carbon steel
TBD hardness = 2300 KnoopSolid TBD depth ≈ 0.0013″Total TBD depth (bottom of “sawtooth”) ≈ 0.006″Base metal hardness = 44 HRA (77 HRB)
low carbon steel
TBD layer
Confidential 4
Quadrant 3 Quadrant 4
Quadrant 1 Quadrant 2200X 200X
200X 200X
UNIFORMITY- CUSTOMER EVALUATIONS
1. Oil & Gas company evaluation of well pipe bore:“The Fe2B layer depth was essentially the same all the way around the pipe sample with no detectable change in thickness.”
2. US Army ARDEC, L-605 alloy barrel bore
Confidential 5
HARDNESS
MATERIAL Knoop @ 50g load Rockwell C
Mild Steel 180-210 20-23
High Carbon Steel 650-750 55-61
Hexavalent Hard Chrome 920-1000 68-70
HVOF 90% Wc 1310 84 (extrapolated)
Tungsten Carbide 1610 91 (extrapolated)
B4C TBD 2100 116 (extrapolated)
Confidential 6
FALEX ASTM G-77
• B4C engaged Falex Corporation to conduct a wear test comparing treated and untreated parts.
• All test specimens are 1018 steel.
Confidential 7
Untreated Block and Ring
Phase 1 test: 1 hr @ 72 RPM with 150 lb. load block lost 13 mg.
Phase 2 test: 30 sec. @ 1000 RPM with 30 lb. load, test machine disengaged due to severe galling.
Treated Block and Ring
Phase 1 test: 1 hr @ 72 RPM with 150 lb. load block lost 1 mg
Phase 2 test: 1000 RPM with 1000 lb. load, test suspended, no increase in friction or galling noted.
FALEX ASTM G-77 RESULTS
Confidential 8
0.0000
0.1000
0.2000
0.3000
0.4000
0.5000
0.6000
0.7000
0.8000
0.9000
17-4ph4140
4140HTD2
1010316
M4A2
O2
Mas
s Lo
ss (
gram
s)
Material Type
ASTM G-65200 RPM Wheel Speed, 2000 Cycles, 10 minutes, 30 lbf Load, 300-400 g/min Sand Flow
Fe2B STD
FALEX ASTM G-65
Confidential 9
ACID TEST
Ammo Reloading die bore was B4C TBD treated and die was cut in half.
Die section on left was immersed in a 70% solution of hydrochloric acid for five days.
Die section on right was not exposed to Acid. Shown for comparison.
Confidential 10
• Cast iron, Ductile Gray• Mild/carbon steel (AISI
1010, 1018, 1026)• Chrome-moly Steel
(AISI 4140, 4340, 4150)• 300 & 400 series
Stainless Steel (AISI 304, 316, 410, 440C)
• Inconel/Stellite (Inconel 725, L-605)
• Powdered metal
• Titanium• High – speed Steel• Sintered/duplex metals
• Aluminum/Zinc• Re-sulfurized steel• Copper• Leaded steel
MATERIAL COMPATIBILITY
Preferred Under Development Untreatable
Confidential 11
Properties Hexavalent Hard Cr HVOF B4C TBD
Knoop Hardness @50g load 980 1310 2200
Bond Strength, Instron pull test 1090 lbs. 210 lbs unlimited
Abrasion resistance, ASTM G-65 mass loss (mm3) 10.71 4 1.89
Hazard Potential Very High Medium Low
Hazardous Waste Very High Medium none
Dimensional Growth 0.001" 0.006" none
Sufuric/Hydrochloric Acid Resistance none none High
Ductility Poor Very Poor Excellent
Impact Resistance Poor Very Poor Excellent
Uniform layer as applied Poor Poor 100%
METAL COATING COMPARISON
Confidential 12
Property Hexavalent Hard Chrome B4C TBD
Knoop Hardness 600-900 1800-2200
Rockwell C hardness 53-63 >>80
Abrasion resistance, ASTM G-65 mass loss (mm3) 10.71 1.89
Dimensional Change equal to coating thickness None
Layer Thickness Range 0.0003"-0.006" 0.0003"-0.0020" deep
Bond Strength 1090 lbs. tensile n/a: no potential for bond failure
Layer Uniformity Fair Excellent
Sulfuric & Hydrochloric Acid Resistance Poor Excellent
Hazardous Waste Generation Severe None
Brittleness High None
B4C TBD vs. HEXAVALENT HARD CHROME
Confidential 13
B4C Technologies, Inc.
Ken Hoffman, CEO4306 SW Cargo WayPalm City, FL 34990