摘要
在Sn-3.8Ag-0.7Cu无铅钎料中添加1%(质量分数)的稀土铈或铒会在其内部形成尺寸较大的稀土相CeSn3和ErSn3.暴露于空气中的CeSn3和ErSn3将发生氧化,同时在其表面会出现锡晶须的快速生长现象.文中研究了稀土相CeSn3与ErSn3表面锡晶须的生长行为.结果表明,在CeSn3与ErSn3表面形成了大量的传统圆柱状锡晶须,同时,在其表面还出现了一些特殊形态的锡晶须,如带纹状的锡晶须、扭曲状的锡晶须、变截面的锡晶须、锡晶须的分枝、合并及搭接现象等.
Large sized CeSn3 and ErSn3 phases precipitated in the Sn-3.8Ag-0.7Cu1.0Ce/Er solder alloy are oxidized when they are exposed in air,and tin whiskers can rapidly grow on the surface of the oxidized CeSn3 and ErSn3 phase. The growth behavior of tin whiskers formed on the surface of the oxidized CeSn3 and ErSn3 phases was investigated.The results indicate that not only traditional cylinder-like tin whiskers but also some special ones are observed on the surface of the oxidized CeSn3 and ErSn3 phases,such as stripelike tin whiskers,distorted tin whiskers,tin whisekrs with variable cross sections,branch-type tin whiskers,merging-type tin whiskers and jointing-type tin whiskers and so on.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2009年第5期25-28,共4页
Transactions of The China Welding Institution
基金
国家科技支撑基金资助项目(2006BAE03B02)
