温度对Cr基钎料钎焊金刚石界面微观形貌影响的研究  

Influence of the brazing temperature on micro-configuration of diamond interface with Cr-based filler metal

作　　者：邵浩明 王进保[1] 孙浩[2] 

机构地区：[1]国家特种矿物材料工程技术研究中心,广西桂林541004 [2]桂林工学院,广西桂林541004

出　　处：《超硬材料工程》2008年第2期12-15,18,共5页Superhard Material Engineering

基　　金：广西区应用基础研究资助项目(桂科基0731006)

摘　　要：选用含Cr活性钎料,适当控制钎焊工艺,实现了金刚石与基体的高强度连接。采用扫描电子显微镜(SEM)和能谱仪(EDS)分析了真空加热条件下,不同钎焊温度对钎焊后金刚石表面微观形貌的影响,探讨了钎料与金刚石界面处碳化物的形成机理。分析结果表明,活性钎料中的Cr能在金刚石表面富集并与金刚石中的C生成枝状的碳化物,碳化物形貌与钎焊温度存在很大关系。The high strength bonding between diamond grit and base steel was realized by using a Cr-based active brazing filler metal under controlled brazing conditions. The micro-configuration of diamond surface at different temperature was analyzed by using scanning electronic microscopes and energy dispersive X-ray spectroscopy. The formation mechanism of carbide layers between brazing filler metal and diamond interface was discussed. Testing results show that the Cr element in the filler metal is accumulated onto diamond surface and reacts with C element to form ramiform carbide which microconfiguration is connected with the brazing temperature.

关 键 词：金刚石 钎焊 微观形貌 化学冶金结合 

分 类 号：TQ164[化学工程—高温制品工业]