Introduction To Silicon Carbide

Silicon carbide is an inorganic substance with a chemical formula of SiC. It is smelted at high temperature in a resistance furnace from raw materials such as quartz sand, petroleum coke (or coal coke), and wood chips (salt is required to produce green silicon carbide). Silicon carbide also exists in nature as a rare mineral, moissanite. Among the non-oxide high-tech refractory raw materials such as C, N, and B, silicon carbide is the most widely used and most economical one, which can be called gold steel sand or refractory sand. Silicon carbide industrially produced in China is divided into black silicon carbide and green silicon carbide, both of which are hexagonal crystals with a specific gravity of 3.20-3.25 and a microhardness of 2840-3320kg/mm2.