Карбид кремния микро порошок

Silicon carbide is an crystal of high hardness and is used as grinding material in industrial process. As rare in natural reserve, most of the silicon carbide is produced artificially. The main structures of sisic are hexagonal crystal, diamond crystal and cubic crystal. SiC is an crystal material of high hardness which is even harder than corundum ( also stronger in mechanical strength than corundum). In industry , SiC is mainly used for grinding. SiC has an excellent heat conductivity and possesses the ability to resist oxidizing. Meanwhile, SiC is also a kind of semi-conductor. Sic has a very limited reserve in natural environment. Even in aerolite and the earth’s crust there is only a little Sic can be prospected. Up to now , human has not found an exploitable source of Sic ores. As the earliest form of grinding material, artificial SiC used in industry area first appeared in 1891 and was promoted to be used in large scale.