Electrochemical corrosion and mechanical behaviors of the charged magnesium

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	Electrochemical corrosion and mechanical behaviors of the charged magnesium
	J. Chen; J. Q. Wang; E. H. Han; W. Ke
	2008
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	494 期号:1-2 页码:257-262
摘要	The electrochemical corrosion and mechanical behaviors of the charged magnesium were investigated using Mott-Schottky (M-S) test and slow strain rate test (SSRT), respectively. The results showed that the hole carrier and vacancy concentrations in the corrosion film increased after cathodic charging due to the formation of magnesium hydroxide. The increasing vacancy concentration caused the increase of the permeation rate of hydrogen to the interior of matrix. When the inner stress caused by synergistic effect of hydrogen pressure and expansion stress of the formation of magnesium hydride was above the fracture strength, crack initiated and Propagated. It indicated that hydrogen embrittlement (HE) mechanism for the Stress cracking corrosion (SCC) of magnesium and its alloys. After cathodic charging, the corrosion resistance and mechanical properties of matrix deteriorated. (C) 2008 Elsevier B.V. All rights reserved.
部门归属	[chen, jian; wang, jianqiu; han, enhou; ke, wei] chinese acad sci, inst met res, environm corros ctr, shenyang 110016, peoples r china.;wang, jq (reprint author), chinese acad sci, inst met res, environm corros ctr, shenyang 110016, peoples r china;jiqwang@imr.ac.cn
关键词	Magnesium Mott-schottky Slow Strain Rate Test Corrosion Hydrogen Mg-al Alloy Sodium-sulfate Solution In-situ Observation Wet-dry Conditions Micro-droplets Induced-cracking Na2so4 Solution Stress Hydrogen Nickel
URL	查看原文
WOS记录号	WOS:000259983700037
引用统计	被引频次：23[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/321006/32667
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Chen,J. Q. Wang,E. H. Han,et al. Electrochemical corrosion and mechanical behaviors of the charged magnesium[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2008,494(1-2):257-262.
APA	J. Chen,J. Q. Wang,E. H. Han,&W. Ke.(2008).Electrochemical corrosion and mechanical behaviors of the charged magnesium.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,494(1-2),257-262.
MLA	J. Chen,et al."Electrochemical corrosion and mechanical behaviors of the charged magnesium".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 494.1-2(2008):257-262.