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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
Source PublicationSurface & Coatings Technology
2011
Volume206Issue:7Pages:1990-1997
ISSN0257-8972
AbstractMagnesium 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.
KeywordMagnesium Corrosion Plasma Electrolyte Oxidation Oes Electrochemical Impedance Spectroscopy Mg Alloy Coatings Behavior Silicate Az91d Microstructure Aluminum
Subject AreaMaterials Science ; Physics
DOI10.1016/j.surfcoat.2011.08.060
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000298711500072
WOS KeywordELECTROCHEMICAL IMPEDANCE SPECTROSCOPY ; MG ALLOY ; COATINGS ; BEHAVIOR ; SILICATE ; AZ91D ; MICROSTRUCTURE ; ALUMINUM
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Coatings & Films ; Physics, Applied
Funding OrganizationThis 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.
DepartmentMAM镀层工艺力学与摩擦学
Classification二类/Q1
Citation statistics
Cited Times:106[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/45138
Collection先进制造工艺力学重点实验室
Corresponding AuthorNie, X (reprint author), Univ Windsor, Dept Mech Automot & Mat Engn, Windsor, ON N9B 3P4, Canada
Recommended Citation
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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