期刊
JOURNAL OF MATERIALS RESEARCH
卷 25, 期 12, 页码 2278-2286出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1557/JMR.2010.0305
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资金
- National Science Council of Taiwan [NSC 97-2221-E-011-080, NSC-98E-2221-011-042]
The interfacial reactions in Sn-0 7wt%Cu/ENIG SUS304 couples at 240, 255, and 270 degrees C are examined in this study The NI-containing ternary Cu6Sn5 phase is formed at the Ni/liquid interface in the early reaction stage then it detaches massively from the SUS304 substrate and splits into two layers in the molten solder as the reaction time increases This phase finally disintegrates and disappears The square pillar-shaped FeSn2 phase is found on top of the SUS304 substrate when the Cu6Sn5 layer detaches The reaction phase formation, detachment, and split mechanisms are proposed The spalling phenomenon is reviewed and discussed The growth mechanism of the FeSn2 phase obeys the parabolic law, and the activation energy is determined to be 112 5 KJ/mol
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