What is Silicon Carbide

Silicon carbide is generally divided into two types: black silicon carbide is made of quartz sand, petroleum coke and high-quality silica as the main raw materials, and is smelted at high temperature in a resistance furnace. Its hardness is between corundum and diamond, its mechanical strength is higher than corundum, and it is brittle and sharp. Green silicon carbide is made of petroleum coke and high-quality silica as the main raw materials, adding salt as an additive, and smelting at high temperature in a resistance furnace. Its hardness is between corundum and diamond, and its mechanical strength is higher than corundum.

Silicon carbide material has a series of excellent properties due to its high elastic modulus, moderate density, small thermal expansion coefficient, high thermal conductivity, thermal shock resistance, high specific stiffness, high dimensional stability and thermal properties. Its physical properties have been paid more and more attention, and it is widely used in ceramic ball bearings, valves, semiconductor materials, gyroscopes, measuring instruments, aerospace and other fields, and has become an irreplaceable material in many industrial fields.