Study of the corrosion mechanism of the in situ grown Mg-Al-CO32- hydrotalcite film on AZ31 alloy

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	Study of the corrosion mechanism of the in situ grown Mg-Al-CO32- hydrotalcite film on AZ31 alloy
	J. Chen; Y. W. Song; D. Y. Shan; E. H. Han
	2012
发表期刊	Corrosion Science
ISSN	0010-938X
卷号	65 页码:268-277
摘要	The corrosion mechanism of Mg-Al-CO32- hydrotalcite film is discussed based on its corrosion behavior and the anion-exchange or adsorption effect of Cl-. The results demonstrate that the film is very compact and acts as a barrier against Cl- attack in the early stage. Then the surface of the film is dissolved gradually due to its instability in aqueous solutions. Only after eliminating CO32-, Cl- can insert into the hydrotalcite interlayer to balance charges. Cl- cannot substitute CO32- just in NaCl solution, but can adsorb on active spots of the film to accelerate the decomposition. (C) 2012 Elsevier Ltd. All rights reserved.
部门归属	[chen, jun; song, yingwei; shan, dayong; han, en-hou] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china.;song, yw (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china.;ywsong@imr.ac.cn
关键词	Magnesium Eis Xps Xrd Passive Films Layered Double Hydroxides Conversion Film Magnesium Alloy Anion-exchange Mg Alloy Carbonic-acid Resistance Ion Crystallization Immobilization
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/59903
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Chen,Y. W. Song,D. Y. Shan,et al. Study of the corrosion mechanism of the in situ grown Mg-Al-CO32- hydrotalcite film on AZ31 alloy[J]. Corrosion Science,2012,65:268-277.
APA	J. Chen,Y. W. Song,D. Y. Shan,&E. H. Han.(2012).Study of the corrosion mechanism of the in situ grown Mg-Al-CO32- hydrotalcite film on AZ31 alloy.Corrosion Science,65,268-277.
MLA	J. Chen,et al."Study of the corrosion mechanism of the in situ grown Mg-Al-CO32- hydrotalcite film on AZ31 alloy".Corrosion Science 65(2012):268-277.