铜锡钛合金真空钎焊金刚石的界面微观结构

机械工程材料, 2012, 36(6): 20-26.

铜锡钛合金真空钎焊金刚石的界面微观结构

郭兆翠 ^1, , 陈燕 ^2, , 苏宏华 ^3, , 傅玉灿 ^4,

1.南京航空航天大学机电学院,南京210016

2.南京航空航天大学机电学院,南京210016

3.南京航空航天大学机电学院,南京210016

4.南京航空航天大学机电学院,南京210016

基金项目: 南京航空航天大学基本科研项目(201010004) 国家自然科学基金资助项目(51075210)

关键词：真空钎焊 , 铜锡钛合金 , 金刚石 , 微观结构

Microstructure for Interface between Diamond and 45 Steel Vacuum-Brazed by Cu-Sn-Ti Alloy

Keywords： vacuum brazing , Cu-Sn-Ti alloy , diamond , microstructure

用铜锡钛合金钎料对金刚石和45钢进行真空钎焊，分析了钎料和金刚石结合界面的微观结构。结果表明：该钎料对金刚石有良好的润湿性，在金刚石表面生成了不连续、无规则形状的TiC层，TiC层上又生成了树枝状的锡钛化合物，该化合物在界面起到了过渡和桥梁的作用；金刚石与45钢实现了良好的冶金结合。

The vacuum brazing was performed between diamond and 45 steel with Cu-Sn-Ti alloy brazing filler, and the interracial microstructure between brazing filler and diamond was analyzed. The results show that the brazing filler and diamond had good wetting ability, the non-continuous TiC layer with no-regular shape was found on diamond surface, and the dendritic Sn-Ti compound was found on TiC layer, which played a role of transition and bridge. The diamond and 45 steel had a good metallurgical bonding.

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