Boron Nitride is a kind of crystal formed by atoms of nitride and boron at a portioning of 43.6% boron and 56.4% nitride. It has 4 variant from: hBN,rBN,cBN and wBN.

• 氮化硼是由氮原子和硼原子所构成的晶体；化学组成为43.；6%25的硼和56