A study of the passive films on chromium by capacitance measurement

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	A study of the passive films on chromium by capacitance measurement
	D. S. Kong; S. H. Chen; C. Wang; W. Yang
	2003
发表期刊	Corrosion Science
ISSN	0010-938X
卷号	45 期号:4 页码:747-758
摘要	Using capacitance measurement and Mott-Schottky analysis, the semiconducting properties of passive films formed on chromium within the passive potential range under different conditions were investigated. The study reveals a p-type behavior of the passive layers. Two semiconductive parameters, i.e., the acceptor density (N-A) and the flatband potential (E-FB), which are mainly related to composition and surface charges of the passive films, have been measured. The effect of film formation potential, passivation time, pH and composition of solutions on the parameters are discussed. N-A increases either with lowering film formation potentials or with prolonging passivation times. This is attributed to the transformation of a less hydrated oxide film into a more hydrated form. The changes of E-FB are discussed as a function of adsorptive anions and pH values of electrolyte solution. (C) 2002 Elsevier Science Ltd. All rights reserved.
部门归属	shandong univ, dept chem, jinan 250100, shandong, peoples r china. state key lab corros & protect, shenyang 110015, peoples r china. shanghai res inst mat, shanghai 200437, peoples r china.;chen, sh (reprint author), shandong univ, dept chem, jinan 250100, shandong, peoples r china
关键词	Chromium Passive Film Capacitance Acceptor Density Flatband Potential Specific Adsorption Electron-transfer Reactions Semiconducting Properties Stainless-steels Alloying Elements Defect Structure Iron Impedance Ellipsometry Stability Surfaces
URL	查看原文
WOS记录号	WOS:000180358900007
引用统计	被引频次：126[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/321006/35873
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. S. Kong,S. H. Chen,C. Wang,et al. A study of the passive films on chromium by capacitance measurement[J]. Corrosion Science,2003,45(4):747-758.
APA	D. S. Kong,S. H. Chen,C. Wang,&W. Yang.(2003).A study of the passive films on chromium by capacitance measurement.Corrosion Science,45(4),747-758.
MLA	D. S. Kong,et al."A study of the passive films on chromium by capacitance measurement".Corrosion Science 45.4(2003):747-758.