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PITTING CORROSION BEHAVIOR OF Sn-0.7Cu LEAD-FREE ALLOY IN SIMULATED MARINE ATMOSPHERIC ENVIROMENT AND THE EFFECT OF TRACE Ga
Yan Zhong; Xian Aiping
Corresponding AuthorXian Aiping(ap.xian@imr.ac.cn)
2011-10-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume47Issue:10Pages:1327-1334
AbstractThe corrosion behaviors of Sn-0.7Cu and Sn-0.7Cu-0.01Ga alloys have been investigated by salt spray dry-wet test with artificial seawater to simulate marine atmospheric environment. The surface corrosion products were analyzed by SEM, XPS and XRD. The results show that, at the early stage of corrosion process, the pits easily form at the Cu enrichment area on the surface of Sn-0.7Cu alloy, then the pits propagate by the way of the tentacles. Latter the corrosion product cracks, laminates and falls off, so that it does not give resistance to the future corrosion. XRD result shows that the corrosion products are mainly composed of amorphous oxide of Sn and a few SnCl(2).2H(2)O. The addition of trace Ga in the Sn-0.7Cu alloy can significantly improve the corrosion resistance of the alloy in the salt spray test. XPS result shows that trace Ga segregated highly on surface and existed a protective oxide film that can improve the corrosion resistance of the Sn-0.7Cu alloy.
KeywordSn-0.7Cu pitting corrosion salt spray corrosion lead-free solder
Funding OrganizationStrategy Cooperation Between Guangdong Province and Chinese Academy of Science
DOI10.3724/SP.J.1037.2011.00201
Indexed BySCI
Language英语
Funding ProjectStrategy Cooperation Between Guangdong Province and Chinese Academy of Science[2009B091300039]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000298903300016
PublisherSCIENCE PRESS
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/104917
Collection中国科学院金属研究所
Corresponding AuthorXian Aiping
AffiliationChinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Yan Zhong,Xian Aiping. PITTING CORROSION BEHAVIOR OF Sn-0.7Cu LEAD-FREE ALLOY IN SIMULATED MARINE ATMOSPHERIC ENVIROMENT AND THE EFFECT OF TRACE Ga[J]. ACTA METALLURGICA SINICA,2011,47(10):1327-1334.
APA Yan Zhong,&Xian Aiping.(2011).PITTING CORROSION BEHAVIOR OF Sn-0.7Cu LEAD-FREE ALLOY IN SIMULATED MARINE ATMOSPHERIC ENVIROMENT AND THE EFFECT OF TRACE Ga.ACTA METALLURGICA SINICA,47(10),1327-1334.
MLA Yan Zhong,et al."PITTING CORROSION BEHAVIOR OF Sn-0.7Cu LEAD-FREE ALLOY IN SIMULATED MARINE ATMOSPHERIC ENVIROMENT AND THE EFFECT OF TRACE Ga".ACTA METALLURGICA SINICA 47.10(2011):1327-1334.
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