Cu-Ni-Sn-Ti活性钎料成分设计与优化

Composition design and optimization of Cu-Ni-Sn-Ti active filler metal

利用混料回归设计建立了Cu-Ni-Sn-Ti活性钎料成分与剪切强度、润湿性能的回归方程,分析了成分质量分数对接头剪切强度和钎料润湿性能的影响规律。结果表明:增加Ti含量有助于提高钎料的润湿性能,但同时也使接头的剪切强度下降;添加适量的Sn能明显改善接头剪切强度和钎料的润湿性能。在综合考虑成分变化对钎料熔化温度区间等影响后,优化设计出用于钎焊连接立方氮化硼超硬材料的w(Ti)=10%~12%、w(Sn)=3%~5.5%的Cu-Ni-Sn-Ti活性钎料。

By means of the mixture regression design process,the regression equations relating the joint shearing strength and the wettability of the filler metal to its element compositions were established.The influences of the elements on the joint shearing strength and the wettability were analyzed.The results prove that adding more Ti improves the wettability,but at the same time the joint shearing strength decline;adding appropriate amount of Sn can improve the joint shearing strength and the wettability.After c...