silicon carbide types
There are two common bases of silicon carbide :black silicon carbide and green silicon carbide, all of which are belong to α-SiC.
1 Black silicon carbide contains about 95% SiC, its toughness is higher than that of green silicon carbide. It is mostly used to make materials with low tensile strength, such as glass, ceramics, stone, refractory materials, cast iron and non-ferrous metals.
2 Green silicon carbide contains more than 97% SiC, it has good self-sharpness. Mainly used for processing hard alloys, titanium alloys and optical glass and fine grinding high speed steel tools.
3 In addition, there is another kind silicon carbide called cubic silicon carbide, it is a yellow-green crystal prepared by a special process,making abrasive tool which is suitable for super-finishing of bearings, and the surface roughness can be processed from Ra32 to 0.16 micron to Ra0.04~. 0.02 microns.
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