The group of materials with BCN composition has longbeen of interest. Diamond, cubic boron nitride, and the newlyemerged C3N4 and BC2N have all been investigated as superhardmaterials.

• 由轻元素B、C、N构成的体系一直受到大家的重视,尤其是金刚石、立方氮化硼以及新近出现的C3N4和BC2N等材料更是倍受关注。 作为BCN体系的一员,类石墨状的BC3是在1986被合成出来的。