Influence of pH on electrochemical properties of passive films formed on Alloy 690 in high temperature aqueous environments

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	Influence of pH on electrochemical properties of passive films formed on Alloy 690 in high temperature aqueous environments
	J. B. Huang; X. Q. Wu; E. H. Han
	2009
发表期刊	Corrosion Science
ISSN	0010-938X
卷号	51 期号:12 页码:2976-2982
摘要	Passive films formed on Alloy 690 in different pH solutions at high temperatures were studied by potentiodynamic polarization, Auger electron spectroscopy, thermodynamic diagrams and the Mott-Schottky relation. The chemical compositions and electronic structures of the passive films were found to be strongly pH-dependent. In alkaline solutions, a secondary passivation was clearly observed on potentiodynamic polarization curves. The passive films were a mixture of Cr(2)O(3) and FeCr(2)O(4) below the flat band potential of nickel oxide and were NiFe(2)O(4) above this potential. Electronic structure models, describing the electrochemical properties of the passive films, are proposed and discussed. (C) 2009 Elsevier Ltd. All rights reserved.
部门归属	[huang, junbo; wu, xinqiang; han, en-hou] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;wu, xq (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china;xqwu@imr.ac.cn
关键词	Alloy Passive Films Thermodynamic Diagrams Polarization High Temperature Corrosion 316l Stainless-steel Oxide-films Electronic-structure Supercritical Water Chemical-composition Corrosion Nickel Lead Behavior Systems
URL	查看原文
WOS记录号	WOS:000272742600023
引用统计	被引频次：106[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/321006/31981
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. B. Huang,X. Q. Wu,E. H. Han. Influence of pH on electrochemical properties of passive films formed on Alloy 690 in high temperature aqueous environments[J]. Corrosion Science,2009,51(12):2976-2982.
APA	J. B. Huang,X. Q. Wu,&E. H. Han.(2009).Influence of pH on electrochemical properties of passive films formed on Alloy 690 in high temperature aqueous environments.Corrosion Science,51(12),2976-2982.
MLA	J. B. Huang,et al."Influence of pH on electrochemical properties of passive films formed on Alloy 690 in high temperature aqueous environments".Corrosion Science 51.12(2009):2976-2982.