Boron carbide has high hardness, high melting point, strong neutron capture ability and very low. The density is excellent for wear resistant parts, bulletproof armor and reactor control rod materials.1984 Wood et al. found that boron carbide also had unusually large Seebeck coefficient and very low heat Conductivity, high temperature conductivity and good thermal stability, and its thermoelectric performance The temperature goes up.So it is considered that boron carbide is the most potential high temperature thermoelectric material One of the.In recent years, the effect of C content on boron carbide structure and thermoelectric properties has been studied In effect, Wood believed that B9C had the best thermoelectric performance, at 1273K, ZT =0.6. The conduction mechanism of B xC medium polaron was proposed.Bouchacout et al It is believed that B6.5C has the best thermoelectric performance and ZT = 1.06 at 1250K.General to Bx-c, short of B, has less thermoelectric performance than B-rich [6].