稀土元素Er对SnCu基无铅钎料组织与性能的影响

发布时间：2018-06-15 08:06

本文选题：稀土元素 + Sn-.Cu　；参考：《铸造技术》2017年11期

【摘要】：研究了不同含量的稀土元素Er对Sn-0.7Cu钎料组织及性能的影响,并利用XRD和SEM对添加稀土元素前后钎料的微观组织进行了分析。结果表明,随着稀土含量的增加,钎料的拉伸强度、铺展面积先增大后减小,总的蠕变量先减小后增大,说明添加适量的稀土元素Er可以改善钎料的拉伸性能、铺展面积和蠕变性能,Er的最佳添加量为0.1%,当含量高于0.1%时,钎料的铺展面积、拉伸强度和蠕变性能均明显下降;添加适量的稀土元素,还可以抑制Cu6Sn5的生长,使钎料组织得到细化。
[Abstract]:The effects of different contents of rare earth element er on the microstructure and properties of Sn-0.7Cu solder were studied. The microstructure of the filler metal before and after the addition of rare earth element was analyzed by XRD and SEM. The results show that with the increase of rare earth content, the tensile strength and spreading area of the filler metal first increase and then decrease, and the total creep amount decrease first and then increase, which indicates that adding appropriate amount of rare earth element er can improve the tensile properties of the filler metal. The optimum addition amount of spreading area and creep property (er) is 0.1. When the content is higher than 0.1, the spreading area, tensile strength and creep property of brazing alloy decrease obviously, and the growth of Cu6Sn5 can be inhibited by adding a proper amount of rare earth elements. The microstructure of solder is refined.
【作者单位】：南充职业技术学院;
【基金】：四川省教育厅自然科学基金项目资助(16ZB0465)
【分类号】：TG425

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