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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/036/01/0099-0105

    • Keywords

       

      Laser cladding; AZ91D magnesium alloy; Zr-based coating; wear; corrosion; simulated body fluid.

    • Abstract

       

      To improve the wear and corrosion resistance of AZ91D magnesium alloy, Zr-based coating made of Zr powder was fabricated on AZ91D magnesium alloy by laser cladding. The microstructure of the coating was characterized by XRD, SEM and TEM techniques. The wear resistance of the coating was evaluated under dry sliding wear test condition at room temperature. The corrosion resistance of the coating was tested in simulated body fluid. The results show that the coating mainly consists of Zr, zirconium oxides and Zr aluminides. The coating exhibits excellent wear resistance due to the high microhardness of the coating. The main wear mechanism of the coating and the AZ91D sample are different, the former is abrasive wear and the latter is adhesive wear. The coating compared to AZ91D magnesium alloy exhibits good corrosion resistance because of the good corrosion resistance of Zr, zirconium oxides and Zr aluminides in the coating.

    • Author Affiliations

       

      Kaijin Huang1 2 3 4 Xin Lin2 Changsheng Xie1 T M Yue4

      1. State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
      2. State Key Laboratory of Solidification Processing, Northwestern Polytechnic University, Xi’an 710072, P. R. China
      3. Hubei Key Laboratory of Hydroelectric Machinery Design & Maintenance, China Three Gorges University, Yichang 443002, P. R. China
      4. Department of Industrial and Systems Engineering, Hong Kong Polytechnic University, Hung Hom, Hong Kong
    • Dates

       

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