Investigation into designed current oscillations during electrodissolution in sulfuric acid solution

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	Investigation into designed current oscillations during electrodissolution in sulfuric acid solution
	H. M. An; S. H. Chen; H. T. Cui; X. G. Yang
	2002
发表期刊	Journal of the Electrochemical Society
ISSN	0013-4651
卷号	149 期号:5 页码:B174-B178
摘要	When the chemical environment near the surface of an iron electrode was changed artificially, potentiostatic current oscillations in the Fe/0.5 mol dm(-3) H2SO4 system can be generated. The effects of adding OH- and SO42- on the periodic behavior of iron in 0.5 mol dm(-3) sulfuric acid were studied by this method. It is suggested that the prepassivating film is a mixed film of FeSO4 and Fe(OH)(2), and the ability of prepassivating film to protect the iron electrode from electrodissolution is decided by the thickness of the mixed prepassivating film and the proportions of FeSO4 and Fe(OH)(2) in the mixed film, which will affect the value of the current density during anodic polarization. The precipitation of Fe(OH)(2) is the prerequisite of the potentiostatic current oscillations during the transition from prepassive to passive regions. (C) 2002 The Electrochemical Society.
部门归属	shandong univ, dept chem, jinan 250100, peoples r china. state key lab corros & protect, shenyang 110015, peoples r china.;an, hm (reprint author), shandong univ, dept chem, jinan 250100, peoples r china
关键词	Potentiostatic Current Oscillations Solution Interfaces Iron Film Dissolution
URL	查看原文
WOS记录号	WOS:000175275700025
引用统计	被引频次：20[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/321006/36229
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. M. An,S. H. Chen,H. T. Cui,et al. Investigation into designed current oscillations during electrodissolution in sulfuric acid solution[J]. Journal of the Electrochemical Society,2002,149(5):B174-B178.
APA	H. M. An,S. H. Chen,H. T. Cui,&X. G. Yang.(2002).Investigation into designed current oscillations during electrodissolution in sulfuric acid solution.Journal of the Electrochemical Society,149(5),B174-B178.
MLA	H. M. An,et al."Investigation into designed current oscillations during electrodissolution in sulfuric acid solution".Journal of the Electrochemical Society 149.5(2002):B174-B178.