【摘要】 本文分别以金属镁粉、氯化镁粉以及镁粉与氮化镁粉的混合物为触媒,以六角氮化硼粉(96～98％含量)为原料,在高温高压下合成了颜色较纯正的黑色、桔黄色及白色立方氮化硼晶体。对上述三种不同颜色的立方氯化硼晶体进行了 TG-DTA分析及高温氧化实验,并讨论了立方氮化硼晶体的耐热机制更多还原

【Abstract】 In this paper, three types of cBN crystals with different colors were obtained under high pressure and high temperature using hBN as starting material and Mg. Mg3N2 and Mg-Mg3N2 powders as catalysts respectively. We analysed the properties of the cBN crystals with different colors by TG-DTA and high temperature ox-idization experiments, and discussed the mechanism of heat resistant character.更多还原