The Smallest Ring In Silicon Carbide Crystal Is A Few Yuan Ring

It's a six Yuan ring. Sic is also called gold steel sand or refractory sand. Silicon carbide is a quartz sand, petroleum coke (or char), sawdust (production of green silicon carbide need to add salt) and other raw materials in the resistance furnace by high-temperature smelting.

At present, China's industrial production of silicon carbide is divided into black silicon carbide and green silicon carbide two, are six square crystals, the specific gravity of 3.20~3.25, micro-hardness of 2840~3320kg/mm2. including black silicon carbide and green silicon carbide, wherein: black silicon carbide is a quartz sand, petroleum coke and high-quality silica as the main raw material, through the resistance furnace high temperature smelting. Its hardness is between corundum and diamond, mechanical strength is higher than corundum, brittle and sharp. Green Silicon carbide is based on petroleum coke and high-quality silica as the main raw materials, adding salt as an additive, through the resistance furnace high temperature smelting. The hardness is between corundum and diamond, and the mechanical strength is higher than that of corundum.