Boron carbide is an important special ceramic with many excellent properties. Boron carbide was first discovered in 1858, and its hardness is second only to diamond and cubic boron nitride in nature, especially its nearly constant high temperature hardness (> 30GPa) is incomparable to other materials, so it has become an important member of the family of superhard materials.

Boron carbide has high melting point (2450℃), high hardness, high modulus, low density (2.52g/ CMS 3), good wear resistance, acid and alkali resistance, and has good neutron absorption capacity, low expansion coefficient, thermoelectric performance, so it is widely used in refractory materials, engineering ceramics, nuclear industry, aerospace and other fields.

However, due to boron carbide itself has low fracture toughness, high sintering temperature, poor oxidation resistance, and poor metal stability and other shortcomings, the further application of boron carbide in industry, this aspect of processing technology needs to be further developed and studied.