Formula SiC, the hardness between corundum and diamond, corundum higher mechanical strength can be used as an abrasive and certain other industrial materials. The successful development steel fiber for concrete reinforcement of industrial use of silicon carbide in 1891, is the oldest artificial abrasive. Although meteorites and the Earth's crust in a small amount of silicon carbide exists, but has not yet been found for the exploitation of mineral resources.black silicon carbide In addition, silicon carbide heating elements are also used extensively for fused zirconia mullite the production of silicon carbide.
The great hardness of silicon carbide having excellent thermal conductivity, is a semiconductor, is resistant to oxidation at high temperatures.
Since the stacking sequence of α-SiC crystal structure different from carbon and silicon atoms to constitute a number of different variants have been found more than 70 species. β-SiC into α-SiC at the time of over 2100 ℃.
