Growth inhibition of interfacial intermetallic compounds by pre-coating oriented Cu6Sn5 grains on Cu substrates

被引:30
作者
Yang, Ming [1 ]
Ko, Yong-Ho [1 ,2 ]
Bang, Junghwan [1 ]
Kim, Taek-Soo [2 ]
Lee, Chang-Woo [1 ]
Zhang, Shuye [2 ]
Li, Mingyu [3 ]
机构
[1] Korea Inst Ind Technol KITECH, Microjoining Ctr, 156 Gaetbeol Ro, Incheon 21999, South Korea
[2] Korea Adv Inst Sci & Technol, Dept Mech Engn, 291 Daehak Ro, Daejeon 34141, South Korea
[3] Harbin Inst Technol, Shenzhen Key Lab Adv Mat, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China
关键词
Lead-free solder; Low Ag content solder; Crystal orientation; Growth kinetics; Interfacial reaction; MOLTEN SNAGCU SOLDER; SN-AG; LAYER; STRENGTH; BEHAVIOR; CU3SN;
D O I
10.1016/j.jallcom.2017.01.109
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
An effective method for inhibiting the growth of interfacial intermetallic compounds during solid-state aging has been proposed in this study. Pre-tinned Cu substrates containing oriented interfacial Cu6Sn5 grains were prepared and reacted with a low-Ag Pb-free solder. The results show that the initial oriented interfacial grains were retained after the subsequent reflow. In addition, the presence of the oriented grains accelerated their orientation concentration and significantly affected the ultimate orientation distribution range during solid-state aging. As a result, the growth of the interfacial intermetallic compounds was inhibited due to the slower diffusion of Sn species through the solder/substrate interface. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:533 / 541
页数:9
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