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Corrosion of Ga-doped Sn-0.7Cu Solder in Simulated Marine Atmosphere
Z. Yan; A. P. Xian
2013
Source PublicationMetallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
ISSN1073-5623
Volume44AIssue:3Pages:1462-1474
AbstractThe surface corrosion behaviors of Sn and Sn-0.7Cu solder in simulated marine atmosphere have been studied. The results showed that pitting and uniform corrosion are the two main initial damage types in the corrosion process. During uniform corrosion, the initial corrosion products, which gradually develop a laminated corrosion film with microcracks, are fragile and easily spall off the surface, thus giving little resistance to further corrosion. XRD of the long-term corrosion products showed that they are mainly amorphous SnO and crystalline Sn(OH)(2) and SnO center dot xH(2)O. Doping the Sn-0.7Cu with gallium significantly improved the corrosion resistance of the alloy in the salt spray test. X-ray photoelectron spectroscopy results showed that the trace amount of Ga significantly segregates to the surface of Sn-0.7Cu alloy and forms a composite oxide layer after solidification in air, thus improving the corrosion resistance. On the other hand, doping the Sn-0.7Cu alloy with phosphorus had little effect.
description.department[yan, zhong ; xian, ai-ping] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [yan, zhong] shenzheng huawei technol inc, shenyang, peoples r china. ; yan, z (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china. ; apxian@imr.ac.cn
KeywordLead-free Solders Electrochemical Corrosion Whisker Growth Nacl Solution Thin-films Tin Oxidation Behavior Alloys
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Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71621
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Z. Yan,A. P. Xian. Corrosion of Ga-doped Sn-0.7Cu Solder in Simulated Marine Atmosphere[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,2013,44A(3):1462-1474.
APA Z. Yan,&A. P. Xian.(2013).Corrosion of Ga-doped Sn-0.7Cu Solder in Simulated Marine Atmosphere.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,44A(3),1462-1474.
MLA Z. Yan,et al."Corrosion of Ga-doped Sn-0.7Cu Solder in Simulated Marine Atmosphere".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 44A.3(2013):1462-1474.
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