摘要
研究了0.1wt.%稀土元素Pr在Sn-9Zn中的添加对合金显微结构的影响,分析了Sn-9Zn-XPr(X=0,0.1)合金钎料/Cu焊点界面化合物微观结构特征。结果表明,微量稀土元素Pr添加能够显著细化Sn-9Zn钎料组织,合金中局部Pr富集形成的Pr Sn3化合物相呈"花朵状";0.1wt.%Pr元素添加能够Sn-9Zn合金钎料/Cu界面反应更为充分和均衡,界面IMC尺寸细化且分布均匀。
The effect of the 0. 1 wt% rare earth element Pr added in Sn-9 Zn on the microstructure of the alloy is studied. The microstructure characteristics of Sn-9 Zn-XPr( X = 0,0. 1) alloy solder/Cu solder joint interface compound are also analyzed. The results show that the addition of Sn to the Sn-9 Zn can significantly refine the Sn-9 Zn solder structure. The Pr Sn3 compound phase formed by local Pr enrichment in the alloy is"flower-like"; The interfacial reaction of Sn-9 Zn/Cu becomes more sufficient and balanced with 0. 1 wt%Pr addition,and the IMC size is refined and evenly distributed.
引文
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