Effect of applied potential on the microstructure, composition and corrosion resistance evolution of fluoride conversion film on AZ31 magnesium alloy

doi:10.1016/j.jmst.2018.04.009

IMR OpenIR

	Effect of applied potential on the microstructure, composition and corrosion resistance evolution of fluoride conversion film on AZ31 magnesium alloy
	Wu, Liping; Wang, Changgang; Pokharel, Durga Bhakta; Etim, Ini-Ibehe Nabuk; Zhao, Lin; Dong, Junhua; Ke, Wei; Chen, Nan
通讯作者	Dong, Junhua(jhdong@imr.ac.cn)
	2018-11-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	34 期号:11 页码:2084-2090
摘要	AZ31 magnesium (Mg) alloy was potentiostatic polarized in 0.1 M deaerated KF solution with pH 7.5 from -0.4 V to -1.4 V with an interval of -0.2 V. The polarization process was described by the potentiostatic current decay. The resultant film was analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and electrochemical impedance spectroscopy (EIS). The results demonstrated that the deposited film included a Mg(OH)(2)/MgF2 containing inner layer and a Mg(OH)(2)/MgF2/KMgF3 comprising outer layer. The high polarized potential produced high content of MgF2 but low content of KMgF3 and thin film. Conversely, the low polarized potential produced small content of MgF2 but high content of KMgF3 and thick film. The optimal corrosion resistance of the deposited film was obtained at -1.4V, which was closely related with the content of MgF2 and KMgF3 and the film thickness. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Potentiostatic Fluoride conversion film AZ31 magnesium alloy KF solution Corrosion
资助者	National Natural Science Foundation of China
DOI	10.1016/j.jmst.2018.04.009
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51701221]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000439396700012
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：13[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/321006/135919
专题	中国科学院金属研究所
通讯作者	Dong, Junhua
作者单位	Chinese Acad Sci, Inst Met Res, Environm Corros Ctr, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wu, Liping,Wang, Changgang,Pokharel, Durga Bhakta,et al. Effect of applied potential on the microstructure, composition and corrosion resistance evolution of fluoride conversion film on AZ31 magnesium alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2018,34(11):2084-2090.
APA	Wu, Liping.,Wang, Changgang.,Pokharel, Durga Bhakta.,Etim, Ini-Ibehe Nabuk.,Zhao, Lin.,...&Chen, Nan.(2018).Effect of applied potential on the microstructure, composition and corrosion resistance evolution of fluoride conversion film on AZ31 magnesium alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,34(11),2084-2090.
MLA	Wu, Liping,et al."Effect of applied potential on the microstructure, composition and corrosion resistance evolution of fluoride conversion film on AZ31 magnesium alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 34.11(2018):2084-2090.