Silicon carbide ceramics have been used as one of the ideal materials for bulletproof plate because of their high hardness and light weight. It has better mechanical properties, oxidation resistance, higher wear resistance and low friction coefficient, in addition to its good thermal stability,high temperature strength, low thermal expansion coefficient, high thermal conductivity and good thermal shock resistance and chemical corrosion resistance and other excellent characteristics, has been favored by military experts in various countries, and is widely used.