At present, alumina, silicon carbide and boron carbide are the main structural ceramics used for bulletproof ceramics. Among them, boron carbide is an ideal armor material with bulletproof performance, which is used as aircraft armor material and special purpose protection structure.

The hardness of boron carbide is second only to diamond and cubic boron nitride in nature, especially its nearly constant high temperature hardness is incomparable to other materials, so it has become an important member of the family of superhard materials. However, boron carbide itself has the disadvantages of low fracture toughness, high sintering temperature, poor oxidation resistance, and poor stability to metal, which limit its further application in industry.

Due to the limitations of boron carbide itself, it is difficult to improve its mechanical properties greatly through process optimization, but with the development of ultrafine powder preparation technology and the development of effective sintering additives, it is possible to make the conventional sintering of boron carbide, boron carbide materials have been important applications in civil, aviation and military fields.