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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
2011
发表期刊Surface & Coatings Technology
卷号206期号:7页码:1990-1997
ISSN0257-8972
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
DOI10.1016/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:86[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重点实验室
通讯作者Nie, X (reprint author), Univ Windsor, Dept Mech Automot & Mat Engn, Windsor, ON N9B 3P4, Canada
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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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