Silicon carbide plate for army mainly has two crystal structures, namely β-SiC of the cubic crystal system and α-SiC of the hexagonal crystal system. It is a compound with strong covalent bonds, and the ionic type of the Si-C bond is only about 12%. Therefore, relative to other ceramics such as alumina and boron carbide, Silicon carbide as armor material has better mechanical properties, oxidation resistance, higher wear resistance and lower friction coefficient, in addition to its good thermal stability, high high temperature strength, low thermal expansion coefficient, high thermal conductivity and good thermal shock resistance and chemical corrosion resistance and other excellent characteristics have been favored by military experts in various countries, and have been widely used.
