期刊
CORROSION SCIENCE
卷 63, 期 -, 页码 20-28出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2012.05.006
关键词
Electronic materials; Alloy; SEM; XPS; Atmospheric corrosion
资金
- Nature Science Foundation [51025104]
- State Key Laboratory of Environment Adaptability for Industrial Products, China National Electric Apparatus Research Institute, Guangzhou
The aim of this study is to evaluate the effects of Ag3Sn intermetallic compounds (IMCs) on corrosion of Sn-3.0Ag-0.5Cu (SAC305) solder alloy under high-temperature and high-humidity condition. The Ag3Sn IMCs of SAC305 with various size and morphology were obtained by changing cooling rate. Commercial SAC305 solder with smallest Ag3Sn IMCs exhibits better corrosion resistance than air-cooled and furnace-cooled SAC305 solders because microgalvanic corrosion between large cathodic Ag3Sn IMCs plates and anodic Sn matrix decreased the corrosion resistance of air-cooled and furnace-cooled SAC305 solders. (c) 2012 Elsevier Ltd. All rights reserved.
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