Study on potential distribution of atmospheric corrosion using a scanning Kelvin probe

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	Study on potential distribution of atmospheric corrosion using a scanning Kelvin probe
	J. Wang; Y. Wang
	2005
发表期刊	Surface Coatings International Part B-Coatings Transactions
ISSN	1476-4865
卷号	88 期号:3 页码:197-200
摘要	A scanning Kelvin probe setup was developed for potential map measurements, and the characteristic of a potential distribution for atmospheric corrosion of metal with salt particle deposition was investigated using this setup. It was found that as the relative humidity increased to a level higher than that over the saturated solution of the salt, the potential map changed from homogeneity into heterogeneity, which formed initially a valley, then a volcano shape. As a result, atmospheric corrosion was initiated due to the heterogeneity shown by the potential distribution, which led to the formation of anodes and cathodes on the metal surface. It also indicated that ambient relative humidity and dry-and-wet cycles played an important role in accelerating the corrosion process shown by the changing potential map. In addition, the potential map had a close relationship with the chemical maps of the corrosion products. Based on the above findings, a model was proposed and discussed for describing the initiation of atmospheric corrosion resulting from salt particle deposition.
部门归属	ocean univ qingdao, dept chem, qingdao 266003, peoples r china. state key lab corros & protect met, shenyang, peoples r china. chinese acad sci, inst oceanol, qingdao, peoples r china. chinese acad sci, grad sch, beijing, peoples r china.;wang, j (reprint author), ocean univ qingdao, dept chem, qingdao 266003, peoples r china;jwang@mail.ouc.edu.cn
关键词	Potential Map Atmospheric Corrosion Scanning Kelvin Probe Zinc So2
URL	查看原文
WOS记录号	WOS:000232310600007
引用统计	被引频次：9[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/321006/35074
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Wang,Y. Wang. Study on potential distribution of atmospheric corrosion using a scanning Kelvin probe[J]. Surface Coatings International Part B-Coatings Transactions,2005,88(3):197-200.
APA	J. Wang,&Y. Wang.(2005).Study on potential distribution of atmospheric corrosion using a scanning Kelvin probe.Surface Coatings International Part B-Coatings Transactions,88(3),197-200.
MLA	J. Wang,et al."Study on potential distribution of atmospheric corrosion using a scanning Kelvin probe".Surface Coatings International Part B-Coatings Transactions 88.3(2005):197-200.