The results show that B powders in the green bodies have been completely nitrified when the density is 1.45 g/cm3, BN particles are randomly arranged and show isotropy.

• 结果表明:密度为1.；45g/cm3的不同坯体；在此工艺条件下B都已完全氮化；生成了纯净的BN陶瓷；烧结后陶瓷的密度发生了不同程度的变化。