| 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 Author | Xian Aiping(ap.xian@imr.ac.cn) |
| 2011-10-11 | |
| Source Publication | ACTA METALLURGICA SINICA
 |
| ISSN | 0412-1961 |
| Volume | 47Issue:10Pages:1327-1334 |
| Abstract | The 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. |
| Keyword | Sn-0.7Cu pitting corrosion salt spray corrosion lead-free solder |
| Funding Organization | Strategy Cooperation Between Guangdong Province and Chinese Academy of Science |
| DOI | 10.3724/SP.J.1037.2011.00201 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Strategy Cooperation Between Guangdong Province and Chinese Academy of Science[2009B091300039] |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000298903300016 |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/104917 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Xian Aiping |
| Affiliation | Chinese 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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