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LI Jungang, LÜ Ying, LI Muqin, WANG Hongwei, ZHU Zhaojun, WEI Zunjie, MENG Xiangcai. Discharge during microarc oxidation process on Mg-7Li alloy and its corrosion resistance[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2013, (7): 25-28.
Citation: LI Jungang, LÜ Ying, LI Muqin, WANG Hongwei, ZHU Zhaojun, WEI Zunjie, MENG Xiangcai. Discharge during microarc oxidation process on Mg-7Li alloy and its corrosion resistance[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2013, (7): 25-28.
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Discharge during microarc oxidation process on Mg-7Li alloy and its corrosion resistance

  • 1.

    School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;School of Materials Science and Engineering, Jiamusi University, Jiamusi 154007, China

  • 2.

    School of Materials Science and Engineering, Jiamusi University, Jiamusi 154007, China

  • 3.

    School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

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  • Received Date: March 21, 2013
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    • Abstract
  • High-speed camera,atomic force microscope and electrochemical workshop were used to investigate discharge regularity during the microarc oxidation process and the corrosion resistance of the coating on Mg-7Li alloy.Results showed that discharge breakdown at the same location continues to the end of the pulse during a pulse period of the power in Na2SiO3 solution, while the discharge breakdown occurs at the same location repeatedly with intermittent time up to 160 ms in different pulse periods.The electrode potential of the coating coated alloy increases by 78.1 mV and its corrosion current density decreases by 2 orders of magnitude compared with that of the substrate, which improves the corrosion resistance of Mg-7Li alloy significantly.
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