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Growth Process and Corrosion Resistance of Micro-Arc Oxide Coatings on Magnesium Alloy in Different Electrolytes
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Siqin LIU1, 2, Yuming QI1, 2, Zhenjun PENG1, Jun LIANG1, 2
Journal of the Chinese Ceramic Society | 2021, 49(6) : 1213 - 1221
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Journal of the Chinese Ceramic Society | 2021, 49(6): 1213-1221
Growth Process and Corrosion Resistance of Micro-Arc Oxide Coatings on Magnesium Alloy in Different Electrolytes
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Siqin LIU1, 2, Yuming QI1, 2, Zhenjun PENG1, Jun LIANG1, 2
Affiliations
  • 1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
  • 2.Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

    • LIU Siqin(1995-), male, Master candidate. E-mail:

About Author:

LIU Siqin(1995-), male, Master candidate. E-mail:

Published: 2021-06-20 doi: 10.14062/j.issn.0454-5648.20200530
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The growth processes (i.e., growth rate, inward/outward growth and compositions) of micro-arc oxidation coatings formed on AZ31 Mg alloys in different electrolytes (i.e., aluminate, silicate and phosphate, respectively) were investigated. The surface and cross-sectional morphologies with elemental distribution and the cross sections of the micro-arc oxidation coatings were characterized by scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS). The phase compositions of three micro-arc oxidation coatings with different coating thickness were determined by X-ray diffraction (XRD). The corrosion resistances of the micro-arc oxidation coatings were evaluated by electrochemical measurements and hydrogen evolution test. The growth processes in different electrolytes indicate the reasons for different anti-corrosion performances of the micro-arc oxidation coatings. The results show that the growth of micro-arc oxidation coating in aluminate is mainly due to the anionic compound deposition, and the coating grows outward, and the growth of the micro-arc oxidation coatings in silicate and phosphate is mainly due to the oxidation of the substrate, leading to the coating to grow inward. It is indicated that the growth processes of micro-arc oxidation coatings with 15 μm thickness in different electrolytes result in that different corrosion resistances (i.e., AZ31-Si> AZ31-P>> AZ31-Al).

magnesium alloy  /  micro-arc oxidation  /  electrolyte system  /  growth process  /  corrosion resistance
刘思勤, 齐玉明, 彭振军, 梁军. 不同电解液中镁合金微弧氧化膜生长过程及腐蚀防护性能. 硅酸盐学报, 2021 , 49 (6) : 1213 -1221 . DOI: 10.14062/j.issn.0454-5648.20200530
Siqin LIU, Yuming QI, Zhenjun PENG, Jun LIANG. Growth Process and Corrosion Resistance of Micro-Arc Oxide Coatings on Magnesium Alloy in Different Electrolytes[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (6) : 1213 -1221 . DOI: 10.14062/j.issn.0454-5648.20200530
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Year 2021 volume 49 Issue 6
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Article Info
doi: 10.14062/j.issn.0454-5648.20200530
  • Receive Date：2020-07-17
  • Online Date：2026-10-30
  • Published：2021-06-20
Article Data
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History
  • Received：2020-07-17
  • Revised：2020-09-09
Funding
Affiliations
    1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
    2.Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding:

LIANG Jun(1979-), male, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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