稀土La、Nd对BiSbSn高温钎料力学性能的影响  

Effect of La and Nd on Mechanical Properties of BiSbSn High Temperature Lead-free Solder Alloy

作　　者：王文利[1] 闫焉服[2] 

机构地区：[1]深圳信息职业技术学院信息技术研究所,广东深圳518172 [2]河南科技大学材料科学与工程学院.河南洛阳471003

出　　处：《热加工工艺》2013年第15期154-157,共4页Hot Working Technology

基　　金：国家自然科学基金项目(51175151);广东省自然科学基金项目(S2011010006110);深圳信息职业技术学院创新团队科研项目(CXTD2-004)

摘　　要：通过在Bi5Sb8Sn焊料中添加微量稀土La、Nd来提高其力学性能,以获得新型的无铅高温钎料。研究表明:加入稀土(La、Nd)元素可以明显提高Bi5Sb8Sn钎料的力学性能;当稀土(La+Nd)含量小于0.2%时,随着稀土元素的增加,钎料的抗拉强度、剪切强度、伸长率增大;当稀土含量大于0.2%时,随着稀土元素的增加,钎料的抗拉强度、剪切强度、伸长率下降。因此稀土的含量为0.2%时,Bi5Sb8Sn钎料的力学性能最佳。A new kind of Bi5Sb8Sn Lead-free high temperature solder alloy was made by adding different content of rare earth La and Nd to improve the mechanical properties. The results show that the tensile strength, shear strength and elongation rate of the alloy increase with the increase of the content of La and Nd, when the rare earth content is less than 0.2%. When the rare earth content is more than 0.2%, the tensile strength, shear strength and elongation rate of the solder alloy decrease with the increasing La and Nd. In a word, the mechanical properties of the solder alloy are best when 0.2% La and Nd is added.

关 键 词：BiSbSn钎料 稀土La ND 力学性能 

分 类 号：TG425[金属学及工艺—焊接]