Black silicon carbide (C) is produced by petroleum coke, quality silicon sand and appended with salt in an electric arc furnace at high temperatures. The hardness and brittleness are lower than that of green silicon carbide. The materials are used to grind cast iron, non-ferrous metals, rubber, leather, plastic, wood, mineral rocks,etc. It can also be used to manufacture high-class refractory products.
|Grain Usages and Types|
|Usage||For bonded abrasives||For coated abrasives|
|Item||Basic mineral||Crystal system||Crystal color||Mohs hardness||Density|
|Black silicon carbide||α- SiC||Hexagonal||Black||9.15||≥3.12g/cm3|
|Item||Micro hardness||Electrical resistivity||Grinding ability (compared with diamond as one)||Linear expansion coefficient (when 900℃ α•10-6k-1)|
|Black silicon carbide||HV3100-3280||3×105-3×107Ω•cm||0.25||4.4|
|Chemical Composition (GB/T 2480-2008)|
|Type||Grit||Chemical composition（%，by weight）|
|Note: Special requirement on chemical composition can be satisfied through discussion.|
|Optional Particle Sizes|
|F4-F220, F240-F1200, P12-P220, P240-P2500, JIS240#-4000# etc.|
|Note: Special specification can be customized according to customer's requirements.|
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Boron carbide is widely applied as follows: boriding refractory, ion transfusion, film layer as well as grinding, polishing, drilling hard metal alloys, jewels, etc. Meanwhile, it is main material for the wear-resisting parts, precise meter-age element, precise spray nozzle, sealed washer, smelting boron steel, boron alloy, etc.learn more