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The microstructure and mechanical property of the high entropy alloy as a low temperature solder

  • Li Pu
  • , Quanfeng He
  • , Yong Yang
  • , Xiuchen Zhao
  • , Zhuangzhuang Hou
  • , K. N. Tu
  • , Yingia Liu
  • Department of Materials Science and Engineering
  • Beijing Institute of Technology
  • Hongqiao Research Institute for Light Metal
  • City University of Hong Kong
  • Department of Materials Science and Engineering
  • University of California at Los Angeles

科研成果: 书/报告/会议事项章节 › 会议稿件 › 同行评审

摘要

In this paper, we studied the high entropy alloy (HEA) of SnBiInZn as a low temperature solder with a melting point about 80 oC. The microstructure of the HEA solder is very complicated. There are three phases at least in the solder, including Bi-rich phase, Sn-rich phase and InBi phase. The wetting reaction between the solder and Cu substrate was conducted at 100 oC and 120 oC. The wetting angle ranges from 30 to 40 degrees, indicating that the solder has a good wetting ability even at such low soldering temperature. The scallop and finger shape intermetallic compounds were determined to be Cu6Sn5. The thickness measurement of the IMC layer shows that the interfacial reaction rate is very slow. The shear stress ranges from 19 MPa to 28 MPa, which indicates that the solder joint is strong enough for electronic packaging technology.

源语言英语
主期刊名Proceedings - IEEE 69th Electronic Components and Technology Conference, ECTC 2019
出版商Institute of Electrical and Electronics Engineers Inc.
页1716-1721
页数6
ISBN(电子版)9781728114989
DOI
出版状态已出版 - 5月 2019
活动69th IEEE Electronic Components and Technology Conference, ECTC 2019 - Las Vegas, 美国
期限: 28 5月 2019 → 31 5月 2019

丛书

姓名Proceedings - Electronic Components and Technology Conference
卷2019-May
ISSN(印刷版)0569-5503

会议

会议69th IEEE Electronic Components and Technology Conference, ECTC 2019
国家/地区美国
市Las Vegas
时期28/05/19 → 31/05/19

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