Pitting corrosion induced current oscillations during electrodissolution of Al in HCIO4 solutions

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	Pitting corrosion induced current oscillations during electrodissolution of Al in HCIO4 solutions
	L. Li; S. H. Chen; X. G. Yang; C. Wang; W. J. Guo
	2004
发表期刊	Journal of Electroanalytical Chemistry
ISSN	0022-0728
卷号	572 期号:1 页码:41-49
摘要	In this paper, oscillatory electrodissolution of Al in perchloric acid solutions has been investigated. The Al/HClO4 system is a new electrochemical oscillator and particularly, current oscillations occur over a large range of HClO4 concentration and over a wide scale of applied potential. The effects of the applied potential and the HClO4 concentration on the current oscillations have been studied. The results are discussed in terms of the formation and dissolution of the surface oxide film. During the anodic dissolution of the Al electrode in HClO4 solutions, perchlorate ions are reduced to chloride ions, by which, pitting corrosion is induced. The surface morphologies of Al electrodes observed using an environmental scanning electron micrograph show that it is pitting corrosion that induces the current oscillations. (C) 2004 Published by Elsevier B.V.
部门归属	shandong univ, dept chem, jinan 250100, peoples r china. xuzhou normal univ, dept chem, xuzhou 221009, peoples r china. state key lab corros & protect, shenyang 110016, peoples r china.;chen, sh (reprint author), shandong univ, dept chem, jinan 250100, peoples r china;shchen@sdu.edu.cn
关键词	Al Electrodissolution Current Oscillations Pitting Corrosion Hcio4 Point-defect Model Passive-active Transition Sulfuric-acid-solutions Mass-transport Control Anodic-oxidation Pure Aluminum Clo4-ions Iron Inhibition Dissolution
URL	查看原文
WOS记录号	WOS:000224287500005
引用统计	被引频次：10[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/321006/35407
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Li,S. H. Chen,X. G. Yang,et al. Pitting corrosion induced current oscillations during electrodissolution of Al in HCIO4 solutions[J]. Journal of Electroanalytical Chemistry,2004,572(1):41-49.
APA	L. Li,S. H. Chen,X. G. Yang,C. Wang,&W. J. Guo.(2004).Pitting corrosion induced current oscillations during electrodissolution of Al in HCIO4 solutions.Journal of Electroanalytical Chemistry,572(1),41-49.
MLA	L. Li,et al."Pitting corrosion induced current oscillations during electrodissolution of Al in HCIO4 solutions".Journal of Electroanalytical Chemistry 572.1(2004):41-49.