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利用Ｘ射线衍射法分析了７种六方氮比硼原料的结晶度、晶粒度和晶格常数，研究了高温高压下六方氮比硼（ｈＢＮ）向立方氮比硼（ｃＢＮ）的转化行为和转化率。结果表明，结晶度高和晶粒度细的六方氮化硼易于转化，有利于ｃＢＮ的成核。
The crystallinity, grain size and lattice constants of seven hexagonal-nitrogen-boron raw materials were analyzed by X-ray diffraction. The conversion behavior of hexagonal to bpy boron (hBN) to cubic boron nitride (cBN) under high temperature and high pressure Conversion rate. The results show that hexagonal boron nitride with high crystallinity and fine grain size can be transformed easily, which is good for the nucleation of cBN.