Silicon carbide (SiC), also known as corundum, is a hard compound containing silicon and carbon. It is a new type of strong composite deoxidizer, which replaces the traditional silicon carbon powder for deoxidation. Compared with the original process, its physical and chemical properties are more stable. , good deoxidation effect. Silicon carbide is usually produced in resistance furnaces at high temperatures of 1700 – 2500 °C.Silicon carbide has been an important material in sandpaper.