Title of article
Corrosion Resistance Enhancement of AZ91 Magnesium Alloy Using Ni-P Interlayer and Electrophoretic Deposited 3YSZ Coating
Author/Authors
Shahriari، A. نويسنده Faculty of Mechanical Engineering,Department of Materials Engineering,University of Tabriz,Tabriz,Iran , , Aghajani، H. نويسنده Faculty of Mechanical Engineering,Department of Materials Engineering,University of Tabriz,Tabriz,Iran , , Hosseini، G. نويسنده Faculty of Chemistry,Department of Physical Chemistry,University of Tabriz,Tabriz,Iran ,
Issue Information
فصلنامه با شماره پیاپی سال 2016
Pages
12
From page
151
To page
162
Abstract
The zirconia stabilized by 3mol % Y2O3 (3YSZ) was applied onto the surface of the magnesium alloy AZ91D using electrophoretic deposition (EPD) from a non aqueous solution. A NiP interlayer between the substrate and YSZ coating was also prepared by electroless plating. Finally, coatings were heat treated in control atmosphere at 400 °C. The preparation, microstructure and corrosion resistance of the coatings were investigated. Scanning electron microscope (SEM) was used to investigate the morphology of coatings. In addition, compositions of surface were determined by Xray diffraction (XRD). The corrosion resistance of the coatings was evaluated by electrochemical impedance spectroscopy (EIS) in 3.5% NaCl solution. Also, the stability of coating was investigated by the Rockwell C indentation test (VDI 3198 norm). The results indicate that NiP interlayer can improve the quality of zirconia coating on the surface. Also, the NiP interlayer and YSZ coating increase the chargetransfer resistance of AZ91D surface in chloride solution.
Keywords
Ni- P , Interlayer , Zirconia , Electrophoretic Deposition , AZ91
Journal title
Progress in Color, Colorants and Coating (PCCC)
Serial Year
2016
Journal title
Progress in Color, Colorants and Coating (PCCC)
Record number
2398480
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