B4C Technologies, Inc.
Transcript of B4C Technologies, Inc.
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1Confidential
B4C Technologies, Inc.
Technology Overview
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• 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
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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
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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
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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)
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FALEX ASTM G-77
• B4C engaged Falex Corporation to conduct a wear test comparing treated and untreated parts.
• All test specimens are 1018 steel.
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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
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0.0000
0.1000
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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
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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.
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• 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
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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
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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
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B4C Technologies, Inc.
Ken Hoffman, CEO4306 SW Cargo WayPalm City, FL 34990