【摘要】 采用高温高压方法,以六角氮化硼(hBN)为原料、选用氮化锂(Li3N)、氢化锂+氮化锂(LiH+Li3N)、氢化锂(LiH)、氢化锂+氨基锂(LiH+LiNH2)、氮化锂+氨基锂(Li3N+LiNH2)为触媒,在合适的温度、压力及生长工艺条件下,分别得到了厚板状、类球形、八面体或六八面体、扁锥状和片状六边形形貌立方氮化硼(cBN)晶体。总结了不同锂基触媒/添加剂对合成的cBN晶体形貌变化的影响。更多还原

【Abstract】 By high pressure and high temperature(HPHT) method,we used hexagonal boron nitride(hBN) as raw materials,Li3N,Li3N+LiH,LiH,LiH+LiNH2,Li3N+LiNH2 as catalyst,and successfully prepared thick plate,spherical,octahedron or hex-octahedron,flat cone and flaky hexagon morphology cubic boron nitride(cBN) crystals with relevant growth conditions.It was summarized that various Li-based catalysts/additives had distinct effects on the cBN crystal morphologies synthesized.更多还原