多种硼源的复合添加对含硼金刚石单晶的影响  

Effect of multiple boron sources on boron-doped diamond single crystals

作　　者：亓海燕[1,2] 李和胜[3] 亓永新[3] 张元培[3] 

机构地区：[1]青岛科技大学机电工程学院,青岛266042 [2]莱芜职业技术学院机电系,莱芜271100 [3]山东大学材料科学与工程学院,济南250061

出　　处：《金刚石与磨料磨具工程》2009年第2期5-8,共4页Diamond & Abrasives Engineering

基　　金：山东省博士后创新项目专项基金资助(200702024)

摘　　要：本文使用碳化硼、六方氮化硼和硼砂三种硼源材料复合添加的铁基触媒在高温高压下合成含硼金刚石,通过对金刚石结构与性能的表征,探讨多种硼源复合添加对含硼金刚石的影响。实验发现,采用多种硼源复合添加的铁基触媒合成金刚石可以有效地稳定金刚石的硼源供给,提高金刚石的含硼量。随着硼含量的增加,金刚石的结晶习性逐渐以(111)晶面为主,主要的机械性能和热稳定性得到了明显的提高。实验结果充分说明,多种硼源复合添加更有利于提高含硼金刚石的品级。In this paper boron-doped diamond single crystals was synthesized at high pressure and high temperature （HPHT） with iron-based catalyst doped with B4C, h-BN and Na2B4O7. The effects of multiple boron sources on diamond were studied according to the characterization of structure and properties of the borondoped diamond. Experiment showed that iron-based catalyst doped with multiple boron sources could accomplish steady supply of boron element and improve the boron content of the diamond. The diamond crystallization mainly occured on the （ 111 ） crystal surface with the increase of boron content, then mechanical properties and thermal stability were improved obviously. Experiment results show that multiple boron sources will help advance the quality of diamond.

关 键 词：含硼金刚石 铁基触媒 多种硼源 高温高压 

分 类 号：TQ164[化学工程—高温制品工业]