| Black silicon Carbide is produceesd at high temperature in an electric resistancetype furnace with puarts sand and petoleum coke as its main raw materials.Its hardness is between fused aluina and synthetic diamond.mechanical intensity of it is higher than fused alumina.It is brittle and sharp and has electrical and heat conductivity in some degree.The abrasives made of it are suitable for working on cast iron ,nonferrous metal,rock,leather,rubber,etc.It is also broadly used as refractory material and metallurgical additive. |
