在钎焊温度为820～940℃,钎焊时间为1～30min的条件下,采用TiZrNiCu钎料、Cu/Mo复合中间层对C/C复合材料和TC4进行了钎焊实验.利用扫描电镜及能谱仪对接头的界面组织进行了研究.结果表明:在较低工艺参数下,Cu/C/C复合材料界面结构为Cu/Cu51Zr14/Ti2 (Cu,Ni)+ Ti(Cu,Ni)+ TiCu+ Cu2TiZr/TiC/C/C复合材料.随着工艺参数的提高,TiCu和Cu2TiZr反应相逐渐消失,Ti(Cu,Ni)2新相生成,此时的界面结构为Cu/Cu51Zr14/Ti2 (Cu,Ni)+ Ti(Cu,Ni)+Ti(Cu,Ni)2/TiC/C/C复合材料.钎焊工艺参数较高时界面结构为Cu/Cu51Zr14/Cu(s.s)+Ti(Cu,Ni)2/TiC/C/C复合材料.随着钎焊温度的增加以及保温时间的延长,界面反应层Cu51Zr14和TiC反应层厚度增加.
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