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材料导报  2020, Vol. 34 Issue (20): 20103-20106    https://doi.org/10.11896/cldb.19060179
  金属与金属基复合材料 |
活性元素Al对超声波钎焊Mo接头组织和力学性能的影响规律
薛海涛, 魏鑫, 郭卫兵, 张新宇
河北工业大学材料科学与工程学院,天津 300130
Effect of Active Element Al on Microstructure and Mechanical Properties of Ultrasonic Soldered Mo Joints
XUE Haitao, WEI Xin, GUO Weibing, ZHANG Xinyu
School of Materials Science and Engineering, Hebei University of Technology,Tianjin 300130, China
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摘要 为了解决太空飞行器用太阳能电池Mo互连片表面Ag镀层因原子氧侵蚀导致的寿命短问题,本工作采用低温Sn基钎料,通过添加活性元素Al和施加超声的复合活化方法,在大气环境、300 ℃、无钎剂的条件下钎焊纯Mo。重点研究了Sn基钎料中Al含量对超声波钎焊Mo接头微观组织、界面处元素分布以及接头力学性能的影响。结果表明,当钎料中不含Al元素时,界面结合强度低,接头断裂在界面处。随着钎料中Al含量的增加,界面处Al元素的聚集增多,界面化合物由Al5Mo转变为Al12Mo,接头剪切强度逐渐增加,当Al含量为10%时,接头的剪切强度达到33.36 MPa,接头断裂在钎缝中。
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薛海涛
魏鑫
郭卫兵
张新宇
关键词:    超声波钎焊  Al活化  组织  力学性能    
Abstract: In order to solve the problem of short service life of Ag-coated Mo interconnects for solar cell of spacecraft due to atomic oxygen erosion, pure Mo was soldered with low temperature Sn-based solder under atmospheric environment, 300 ℃ and without flux by adding active Al element and applying ultrasonic activation soldering method. The effect of Al content in Sn-based solders on the microstructure, element distribution at interface and mechanical properties of ultrasonic soldered Mo joints was studied. The results showed that the interfacial bonding strength was low and the joint fractured from the interface without Al element in the filler metal. With the increase of Al content in the filler metal, the segregation of Al element at the interface increases, the interfacial compound changes from Al5Mo to Al12Mo, and the shear strength of the joint increases gra-dually. When the Al content was 10%, the shear strength of the joint reached 33.36 MPa, and the joint fractured from the soldering seam.
Key words:  molybdenum    ultrasonic soldering    Al activation    microstructure    mechanical properties
               出版日期:  2020-10-25      发布日期:  2020-11-06
ZTFLH:  TG425  
  TG454  
基金资助: 河北省高等学校科学技术研究项目-青年基金项目(QN2019028);河北省自然科学基金(E2019202407)
通讯作者:  gwbingo@163.com   
作者简介:  薛海涛,博士,河北工业大学副教授,硕士研究生导师。主要从事异种材料焊接研究工作,已发表论文20余篇。
郭卫兵,讲师,硕士研究生导师,主要从事超声钎焊的理论与应用研究,已发表论文8篇。
引用本文:    
薛海涛, 魏鑫, 郭卫兵, 张新宇. 活性元素Al对超声波钎焊Mo接头组织和力学性能的影响规律[J]. 材料导报, 2020, 34(20): 20103-20106.
XUE Haitao, WEI Xin, GUO Weibing, ZHANG Xinyu. Effect of Active Element Al on Microstructure and Mechanical Properties of Ultrasonic Soldered Mo Joints. Materials Reports, 2020, 34(20): 20103-20106.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.19060179  或          http://www.mater-rep.com/CN/Y2020/V34/I20/20103
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