The effect of current mode and discharge type on the corrosion resistance of plasma electrolytic oxidation (PEO) coated magnesium alloy AJ62

doi:10.1016/j.surfcoat.2011.08.060

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	The effect of current mode and discharge type on the corrosion resistance of plasma electrolytic oxidation (PEO) coated magnesium alloy AJ62
	Hussein RO; Zhang P; Nie X; Xia Y(夏原); Northwood DO; Nie, X (reprint author), Univ Windsor, Dept Mech Automot & Mat Engn, Windsor, ON N9B 3P4, Canada
发表期刊	Surface & Coatings Technology
	2011
卷号	206 期号:7 页码:1990-1997
ISSN	0257-8972
摘要	Magnesium alloys are increasingly being used as lightweight materials in the automotive, defense, electronics, biomaterial and aerospace industries. However, their inherently poor corrosion and wear resistance have, so far, limited their application. Plasma electrolytic oxidation (PEO) in an environmentally friendly aluminates electrolyte has been used to produce oxide coatings with thicknesses of similar to 80 mu m on an AJ62 magnesium alloy. Optical emission spectroscopy (OES) in the visible and near ultraviolet (NUV) band (285 nm-800 nm) was employed to characterize the PEO plasma. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the coated materials, and potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) in a 3.5% NaCl solution were used to determine the corrosion behavior. It was found that the plasma discharge behavior significantly influenced the microstructure and the morphology of the oxide coatings and, hence the corrosion resistance. The corrosion resistance of the coated alloy was increased by changing the current mode from unipolar to bipolar, where the strong plasma discharges had been reduced or eliminated. (C) 2011 Elsevier B.V. All rights reserved.
关键词	Magnesium Corrosion Plasma Electrolyte Oxidation Oes Electrochemical Impedance Spectroscopy Mg Alloy Coatings Behavior Silicate Az91d Microstructure Aluminum
学科领域	Materials Science ; Physics
DOI	10.1016/j.surfcoat.2011.08.060
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000298711500072
关键词[WOS]	ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY ; MG ALLOY ; COATINGS ; BEHAVIOR ; SILICATE ; AZ91D ; MICROSTRUCTURE ; ALUMINUM
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Coatings & Films ; Physics, Applied
项目资助者	This research was supported by Ontario Centres of Excellence (OCE) and the Natural Sciences and Engineering Research Council of Canada (NSERC). Dr. Y Xia was a Senior Visiting Scholar at the University of Windsor during this research project.
课题组名称	MAM镀层工艺力学与摩擦学
论文分区	二类/Q1
引用统计	被引频次：183[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/45138
专题	先进制造工艺力学实验室
通讯作者	Nie, X (reprint author), Univ Windsor, Dept Mech Automot & Mat Engn, Windsor, ON N9B 3P4, Canada
推荐引用方式 GB/T 7714	Hussein RO,Zhang P,Nie X,et al. The effect of current mode and discharge type on the corrosion resistance of plasma electrolytic oxidation (PEO) coated magnesium alloy AJ62[J]. Surface & Coatings Technology,2011,206,7,:1990-1997.
APA	Hussein RO,Zhang P,Nie X,夏原,Northwood DO,&Nie, X .(2011).The effect of current mode and discharge type on the corrosion resistance of plasma electrolytic oxidation (PEO) coated magnesium alloy AJ62.Surface & Coatings Technology,206(7),1990-1997.
MLA	Hussein RO,et al."The effect of current mode and discharge type on the corrosion resistance of plasma electrolytic oxidation (PEO) coated magnesium alloy AJ62".Surface & Coatings Technology 206.7(2011):1990-1997.

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