潘美诗,陈海燕,林逸,鲁少洲,董春涛,黄小汉,龙协,黄舜天,吴灏

• 1:广东工业大学材料与能源学院
• 2:珠海富士智能股份有限公司

摘要(Abstract)：

在Sn_(58)Bi_(40)In_(12)合金中添加不同含量的Zn元素，利用扫描电镜和能谱仪分析了合金的显微组织和成分，借助X射线衍射仪和热重实验分析了合金的物相组成，研究了Zn元素含量对合金的抗拉强度、耐腐蚀性和焊接性能的影响，分析了Zn元素的影响机理。结果表明：Sn_(58)Bi_(40)In_(12)-xZn (x=0.5～2.5)合金由粗大树枝晶初晶Bi、方块状InBi-Sn共晶体、片层状Sn-Bi共晶体和长杆状Zn组成；加入1.5%～2.0%锌元素能促使Sn-BiIn共晶体和Sn-Bi共晶体析出，抑制了脆性相初晶Bi的析出，与此同时还改善了合金在钎焊时的润湿性能，从而提高了铸态合金的力学性能和焊接性能；其中Sn58Bi40In12-1.5Zn合金的抗拉强度为63.00 MPa,伸长率为24.82%,焊点的剪切强度为36.86 MPa,与Sn_(58)Bi_(40)In_(12)合金相比，抗拉强度提高了21.15%,伸长率增加了12.26%,焊点剪切强度提高了46.91%。

关键词(KeyWords)： SnBiInZn焊料;显微组织;力学性能;焊接性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 潘美诗,陈海燕,林逸,鲁少洲,董春涛,黄小汉,龙协,黄舜天,吴灏

DOI: 10.13289/j.issn.1009-6264.2024-0529

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