Journal
CORROSION SCIENCE
Volume 112, Issue -, Pages 150-159Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2016.07.004
Keywords
Alloy; Zinc; EIS; Potentiostatic; Passive films
Funding
- JSPS [24226017]
- Chinese Scholars Council
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The corrosion behavior of ternary Sn-9Zn-0.1X (X = Ni, Cr, Cu and Ag) solder alloys were investigated by electrochemical techniques and surface characterization, aiming to explore the effects of intermetallic-forming elements on the corrosion resistance. Zn-rich precipitates in the modified alloys were suppressed and refined by formation of Zn-containing intermetallic compounds. As a result, the corrosion resistance improved markedly with addition of these elements, and the potency to suppress anodic dissolution increased in the order of Ag < Cu < Cr < Ni. Such improvement was discussed in terms of refined Zn-rich precipitates and enhanced passive film stability. (C) 2016 Elsevier Ltd. All rights reserved.
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