PITTING CORROSION BEHAVIOR OF Sn-0.7Cu LEAD-FREE ALLOY IN SIMULATED MARINE ATMOSPHERIC ENVIROMENT AND THE EFFECT OF TRACE Ga

doi:10.3724/SP.J.1037.2011.00201

IMR OpenIR

	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
通讯作者	Xian Aiping(ap.xian@imr.ac.cn)
	2011-10-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	47 期号:10 页码:1327-1334
摘要	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.
关键词	Sn-0.7Cu pitting corrosion salt spray corrosion lead-free solder
资助者	Strategy Cooperation Between Guangdong Province and Chinese Academy of Science
DOI	10.3724/SP.J.1037.2011.00201
收录类别	SCI
语种	英语
资助项目	Strategy Cooperation Between Guangdong Province and Chinese Academy of Science[2009B091300039]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000298903300016
出版者	SCIENCE PRESS
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/104917
专题	中国科学院金属研究所
通讯作者	Xian Aiping
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 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.