The Special Role of Anodic Second Phases in the Micro-galvanic Corrosion of EW75 Mg Alloy

IMR OpenIR

	The Special Role of Anodic Second Phases in the Micro-galvanic Corrosion of EW75 Mg Alloy
	Liu, Jinhui; Song, Yingwei; Chen, Jiachen; Chen, Peng; Shan, Dayong; Han, En-Hou; ywsong@imr.ac.cn
	2016
发表期刊	ELECTROCHIMICA ACTA
ISSN	0013-4686
卷号	189 页码:190-195
摘要	It is well known that second phases act as micro-cathodes in the corrosion of traditional Mg alloys. However, the effect of second phases on the corrosion behavior of Mg-rare earth (RE) alloys is ambiguous in view of the second phases consisting of Mg and more active RE elements. The role of second phases in the corrosion of cast EW75 (Mg-5Y-7Gd-1Nd-0.5Zr) was studied by scanning electron microscopy (SEM) observations, Scanning Kelvin Probe Force Microscopy (SKPFM) analysis, immersion and electrochemical tests. It is found that the second phases in EW75 are more active than Mg matrix and preferentially dissolved at the initial corrosion stage. It indicates that the second phases act as micro-anodes, which are greatly different from the role of second phases in traditional Mg alloys. (C) 2015 Elsevier Ltd. All rights reserved.
部门归属	[liu, jinhui] northeastern univ, shenyang 110004, peoples r china ; [liu, jinhui ; song, yingwei ; chen, peng ; shan, dayong ; han, en-hou] chinese acad sci, inst met res, natl engn ctr corros control, shenyang 110016, peoples r china ; [chen, jiachen] xi an jiao tong univ, sch chem engn & technol, xian 710049, peoples r china
关键词	Second Phases Micro-galvanic Corrosion Mg-re Alloys Micro-anodes Skpfm
资助者	National Key Basic Research Program of China [2013CB632205]; National Natural Science Foundation of China [51471174]
收录类别	sci
语种	英语
WOS记录号	WOS:000371140300023
引用统计	被引频次：132[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/321006/75208
专题	中国科学院金属研究所
通讯作者	ywsong@imr.ac.cn
推荐引用方式 GB/T 7714	Liu, Jinhui,Song, Yingwei,Chen, Jiachen,et al. The Special Role of Anodic Second Phases in the Micro-galvanic Corrosion of EW75 Mg Alloy[J]. ELECTROCHIMICA ACTA,2016,189:190-195.
APA	Liu, Jinhui.,Song, Yingwei.,Chen, Jiachen.,Chen, Peng.,Shan, Dayong.,...&ywsong@imr.ac.cn.(2016).The Special Role of Anodic Second Phases in the Micro-galvanic Corrosion of EW75 Mg Alloy.ELECTROCHIMICA ACTA,189,190-195.
MLA	Liu, Jinhui,et al."The Special Role of Anodic Second Phases in the Micro-galvanic Corrosion of EW75 Mg Alloy".ELECTROCHIMICA ACTA 189(2016):190-195.