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 | |
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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