氮对金刚石生长形貌的影响  

Influnce of Nitrogen on Growth Morphology of Diamond Crystal

作　　者：李勇[1] 金慧[1] 谭德斌[1] 张壮飞[2] 张杰[1] 贾晓鹏[2] 

机构地区：[1]铜仁学院物理与电子工程学院,贵州铜仁554300 [2]吉林大学超硬材料国家重点实验室,吉林长春130012

出　　处：《超硬材料工程》2015年第6期1-4,共4页Superhard Material Engineering

基　　金：贵州省教育厅自然科学基金重点项目(KY[2013]183);铜仁学院博士科研项目(DS1302;trxyS1415);国家自然基金面上项目(51172089)

摘　　要：温度为1400℃,压力为5.8-6.2GPa的合成条件下,采用膜生长法在Fe70Ni30触媒中添加P3N5,研究了合成体系中氮浓度对金刚石生长形貌的影响。实验结果表明：合成体系中随着P3N5添加量的增加,晶体的形貌由八面体变为柱状,最后变为联晶。此外,通过傅立叶红外光谱对所合成晶体内部的氮杂质缺陷进行了分析和计算。Influnce of nitrogen concentration on growth morphology of diamond crystal has been studied through film growth method by adding P3N5 into Fe70Ni30accelerant under synthetic conditions of a temperature of 1400 ℃ and a pressure of 5.8-6.2GPa.Result shows that as the volume of addition of P3N5 increases in the synthetic system,the morphology of crystals has been changed from octahedron into columnar and finally into longulite.In addition,nitrogen impurity defect inside the synthetic crystal has been analysed and measured by Fourier transform infrared spectrometer.

关 键 词：金刚石 晶体形貌 氮浓度 

分 类 号：TQ163[化学工程—高温制品工业]