• Journal of Inorganic Materials
  • Vol. 35, Issue 6, 709 (2020)
Zhihu WANG1, Jumei ZHANG2, Lijing BAI1, and Guojun ZHANG1、*
Author Affiliations
  • 1School of Materials Science and Engineering, Xi'an University of Technology, Xi’an 710048, China
  • 2School of Materials Science and Engineering, Xi'an University of Science and Technology, Xi’an 710054, China
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    DOI: 10.15541/jim20190426 Cite this Article
    Zhihu WANG, Jumei ZHANG, Lijing BAI, Guojun ZHANG. Mg(OH)2 Film on Micro-arc Oxidation Ceramic Coating of AZ31 Magnesium Alloy: Preparation and Corrosion Resistance[J]. Journal of Inorganic Materials, 2020, 35(6): 709 Copy Citation Text show less
    XRD patterns of AZ31 substrate, MAO coating and HT/MAO composite coating
    1. XRD patterns of AZ31 substrate, MAO coating and HT/MAO composite coating
    Surface morphologies of MAO coating and HT/MAO composite coating
    2. Surface morphologies of MAO coating and HT/MAO composite coating
    EDS spectra and element contents of (a) MAO and (b) HT-2.0/MAO
    3. EDS spectra and element contents of (a) MAO and (b) HT-2.0/MAO
    Static contact angles of MAO coating and HT/MAO composite coating
    4. Static contact angles of MAO coating and HT/MAO composite coating
    Potentiodynamic polarization curves of AZ31 substrate, MAO, HT-0.2/MAO and HT-2.0/MAO
    5. Potentiodynamic polarization curves of AZ31 substrate, MAO, HT-0.2/MAO and HT-2.0/MAO
    Nyquist and Bode plots of bare AZ31 and coated samples as well as equivalent circuit
    6. Nyquist and Bode plots of bare AZ31 and coated samples as well as equivalent circuit
    Rout, Rinn and Rtotal values of three coatings
    7. Rout, Rinn and Rtotal values of three coatings
    XRD patterns of MAO and HT-0.2/MAO before and after immersion in 3.5wt% NaCl solution
    8. XRD patterns of MAO and HT-0.2/MAO before and after immersion in 3.5wt% NaCl solution
    Surface morphologies of MAO and HT-0.2 /MAO after immersion in 3.5wt% NaCl solution for 14 d
    9. Surface morphologies of MAO and HT-0.2 /MAO after immersion in 3.5wt% NaCl solution for 14 d
    SamplesEcorr /VIcorr /(µA·cm-2)βa /Vβc/VRP/(kΩ·cm2)CR/(mm·a-1)
    Bare AZ31-1.46022.340.2840.3953.211510.5×10-3
    MAO-1.3830.05301.3400.2091.481×1031.211×10-3
    HT-0.2/MAO-1.3760.03450.9380.4093.585×1030.788×10-3
    HT-2.0/MAO-1.3500.01871.2260.2084.129×1030.427×10-3
    Table 1. Fitting parameters derived from the potentiodynamic polarization curves
    Zhihu WANG, Jumei ZHANG, Lijing BAI, Guojun ZHANG. Mg(OH)2 Film on Micro-arc Oxidation Ceramic Coating of AZ31 Magnesium Alloy: Preparation and Corrosion Resistance[J]. Journal of Inorganic Materials, 2020, 35(6): 709
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