水热氢还原制备镍包金刚石  

PREPARATION OF NICKEL-COATED DIAMOND BY HYDROTHERMAL PRESSURE HYDROGEN REDUCTION

作　　者：侯玉柏[1] 曾克里[1] 尹春雷[1] 许根国[1] 

机构地区：[1]北京矿冶研究总院,北京100044

出　　处：《矿冶》2006年第3期38-40,共3页Mining And Metallurgy

摘　　要：本文叙述了水热氢还原制备镍包金刚石的原理及过程,讨论了影响得到包覆完整均匀的镍包金刚石的主要因素(如金刚石的表面预处理、搅拌强度、反应温度等)。SEM分析结果表明,一次和二次包覆得到的表面层并不是很均匀,而三次包覆的形貌是十分致密和连续的。The preparation of nickel-coated diamond on hydrothermal reduction with pressurized hydrogen is described in this paper. The main factors of influencing coating are discussed （pre-treatment of surface, stirring rate, temperature of reaction）. The analysis of SEM shows that nickel is roughly dispersed on the surface of diamond particle by one time or two times coating process, nickel is evenly compact and sequential dispersed on its surface by three times coating process.

关 键 词：氢还原 金刚石 镍包覆 预处理 

分 类 号：TG174.443[金属学及工艺—金属表面处理]