Research development of SnAgCu system lead-free solders in electronics packing

被引:0
作者
Chen, Jian-Xun [1 ]
Zhao, Xing-Ke [1 ]
Liu, Da-Yong [1 ]
Huang, Ji-Hua [1 ]
Zou, Xu-Chen [1 ]
机构
[1] School of Materials Science and Engineering, University of Science and Technology Beijing
来源
Cailiao Gongcheng/Journal of Materials Engineering | 2013年 / 09期
关键词
Lead-free solder; Reliability; Review; SnAgCu system;
D O I
10.3969/j.issn.1001-4381.2013.09.018
中图分类号
学科分类号
摘要
The SnAgCu solder with a wide application was identified as the best substitute for the traditional SnPb solder in electronic assembly industry. However, this alloy had some weaknesses, such as low anti-oxidation ability, the formation of large, brittle intermetallic compounds at the solder and substrate interface, less creep and fatigue resistance of joints during service condition compared to the eutectic SnPb solder. The microstructures and properties of SnAgCu alloy can be significantly improved with the addition of alloying elements and nanoparticles. Therefore, the reliability of solder joints can be enhanced. It is beneficial for the development novel high-performance SnAgCu solder with element additives. Based on the development of SnAgCu system lead-free solders at home and abroad, this paper summarizes the effects of alloying elements and nano particles on the wettability, anti-oxidization, microstructures, solder joints reliability of SnAgCu system lead-free solders. The present problems in the process of the applications of SnAgCu system lead-free solders are reviewed, some proposals are put forward which may provide a guide for the study of SnAgCu system lead-free solders.
引用
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页码:91 / 98
页数:7
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