何凯,陈益平,胡德安,程东海,李正兵,黄硕,郭义乐

• 1:南昌航空大学航空制造工程学院

摘要(Abstract)：

通过向亚共晶Sn30Bi钎料中添加Al元素,制备新型Sn-30Bi-xAl低温无铅钎料,采用扫描电镜和拉伸力学实验等研究了时效前后Sn30Bi-Al钎料合金的微观组织及力学性能。结果表明:向亚共晶Sn30Bi钎料中加入Al元素,能够一定程度上抑制焊后接头中形成网状共晶组织,以及Bi相团聚,当Sn30Bi-Al合金中Al元素含量为0.3%时,对网状共晶组织形成和Bi相团聚的抑制作用最佳;在时效过程中,向Sn30Bi合金中添加Al元素,能够一定程度上抑制Bi相团聚,降低界面IMC层生长速率;当Al含量为0.3%时,Sn30Bi-0.3Al接头的力学性能最佳。

关键词(KeyWords)： Sn30Bi钎料;Al元素;接头组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51865034);; 江西省自然科学基金项目(20161BAB216100)

作者(Author): 何凯,陈益平,胡德安,程东海,李正兵,黄硕,郭义乐

DOI: 10.13289/j.issn.1009-6264.2019-0402

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