Silicon Carbide(SiC)

Silicon carbide (SiC) [1] is a compound with strong covalent bonds, and the ionic type of its Si--C bond is only about 12%, so it also has excellent mechanical properties, excellent oxidation resistance, high wear resistance and low friction coefficient. The biggest feature of silicon carbide is high temperature strength, ordinary ceramic materials at 1200 ~ 1400 degrees Celsius strength will be significantly reduced, while silicon carbide at 1400 degrees Celsius bending strength is still maintained at a higher level of 500 ~600MPa, so its working temperature can reach 1600 ~ 1700 degrees Celsius. In addition, the thermal conductivity of silicon carbide ceramics is also high, second only to beryllium oxide ceramics in ceramics, so silicon carbide has been widely used in high temperature bearings, bulletproof plates, nozzles, high temperature corrosion resistant parts and high temperature and high frequency range of electronic equipment parts and other fields.