摘要
测试了Sn-0.7Cu和Sn-0.7Cu-0.012Ge钎料在不同钎焊温度下的润湿性,研究了Ge元素对老化过程中钎焊界面金属间化合物(IMC)层生长速率的影响。结果表明:2种钎料的润湿性相差不大,但添加了Ge元素的Sn-0.7Cu-0.012Ge钎料在不同钎焊温度下的漫流性得到了明显的改善,相应提高了约4.00%~5.00%;250℃和350℃钎焊温度下,Sn-0.7Cu/Cu钎焊界面IMC在150℃的老化条件下的生长速率分别为3.24×10-18 m2/s和2.50×10-17 m2/s,Sn-0.7Cu-0.012Ge/Cu钎焊界面IMC的生长速率分别为2.66×10-18 m2/s和1.48×10-17 m2/s。Ge元素在钎焊界面处富集,提高了界面IMC的致密性,阻碍了原子的扩散,在一定程度上抑制了界面IMC层的粗化与增厚。
The wettability of Sn-0.7Cu and Sn-0.7Cu-0.012Ge solders were measured under different soldering temperature,and the influence of trace Ge on interfacial IMC growth rate during aging process was also investigat-ed. The results show that,Sn-0.7Cu-0.012Ge and Sn-0.7Cu solders have no obvious difference in their wettabili-ty,but the overflow property of Sn-0.7Cu-0.012Ge solder is significantly improved by about 4.00%-5.00%with the addition of Ge element. During the aging test at the temperature of 150℃,the interfacial IMC growth rate of Sn-0.7Cu/Cu at the soldering temperature of 250℃and 350℃are 3.24×10-18 m2/s and 2.50×10-17 m2/s,respec-tively,while Sn-0.7Cu-0.012Ge/Cu are 2.66×10-18 m2/s and 1.48×10-17 m2/s,respectively. The accumulation of Ge element in soldering interface can effectively improve the density of the interfacial IMC,hinder the diffusion of atoms,thus inhibit the interfacial IMC layer coarsen and thicken to a certain extent.
出处
《粉末冶金工业》
CAS
北大核心
2016年第3期21-27,共7页
Powder Metallurgy Industry
基金
中国博士后科学基金资助项目(2015M582221)
广东省省科技计划项目(2013B090600031)
重庆市科委重点产业共性关键技术创新专项(cstc2015zdcy50003)
特种焊接材料与技术重庆市高校工程研究中心开放课题基金资助项目(SWMT201502
SWMT201503
SWMT201505)
重庆理工大学2015科研立项科技发明类项目(KLB15043)