Cu-Sn-Cr真空钎焊金刚石界面微结构分析  

Interfacial Structure of Diamond Brazing with Cu-Sn-Cr

作　　者：卢金斌[1,2] 贺亚勋 穆云超[2] 赵彬[2] 王志新[2] 

机构地区：[1]苏州科技学院机械工程学院,苏州215009 [2]中原工学院材料与化工学院,郑州450007

出　　处：《人工晶体学报》2015年第10期2881-2884,共4页Journal of Synthetic Crystals

基　　金：新型钎焊材料国家重点实验室开放课题(SKLABFMT201003);河南省科技攻关项目(082102230027)

摘　　要：为降低钎焊金刚石的热损伤和制造成本,开发了一种适于钎焊金刚石的混合金属粉Cu-Sn-Cr作为钎料,并对金刚石磨粒进行了钎焊实验。采用SEM、EDS及XRD对金刚石焊后界面微结构进行了分析。结果表明:适合钎焊金刚石的活性成分为Cu76Sn19Cr5,该钎料能够实现金刚石的高强度连接。在金刚石与钎料界面处有碳化物生成,钎料组织主要由α-Cu固溶体、Cu41Sn11。金刚石焊后形貌完整,表面基本光滑,表面生成了连续片状Cr7C3。In order to reduce the thermal damage in brazing diamond and the cost of manufacture, Cu-Sn- Cr, a mixed metal powder suitable for brazing diamond was prepared, and was used to braze the diamond grits. The interfacial microstructures of the joints between diamond and Q235 steel brazed with BCu76Sn19Cr5 were analyzed by SEM, EDS and XRD. The results show that the active ingredient for the brazing of diamond is Cu76Sn19CrS, and higher strength bonding of the brazing diamond can be realized. There are carbides formed in the front of the interface between brazing alloy and diamond, and the microstructure is mainly composed of α-Cu solid solution, and Cu41 Snip. The morphologies of diamond after brazing are intact, and the surface is smooth. Continuous sheet CrTC3 is formed in the surface.

关 键 词：真空钎焊 金刚石 Cu-Sn-Cr 碳化物 

分 类 号：TG401[金属学及工艺—焊接]