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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/039/02/0519-0523

    • Keywords

       

      AZ91D magnesium alloy; electroless NiWP coating; temperature; corrosion resistance.

    • Abstract

       

      The effect of plating temperatures between 60 and 90$^{\circ}$C on structure and corrosion resistance for electroless NiWP coatings on AZ91D magnesium alloy substrate was investigated. Results show that temperature has a significant influence on the surface morphology and corrosion resistance of the NiWP alloy coating. An increase in temperature will lead to an increase in coating thickness and form a more uniform and dense NiWP coatings. Moreover, cracks were observed by SEM in coating surface and interface at the plating temperature of 90$^{\circ}$C. Coating corrosion resistance is highly dependent on temperature according to polarization curves. The optimum temperature isfound to be 80$^{\circ}$C and the possible reasons of corrosion resistance for NiWP coating have been discussed.

    • Author Affiliations

       

      M Q YU1 Q QIAO2 F YOU2 C L LI2 Y ZHAO2 Z Z XIAO2 H L LUO1 Z F XU1 KAZUHIRO MATSUGI1 J K YU2

      1. Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, 739-8527 Higashi-Hiroshima, Japan
      2. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, Hebei, People’s Republic of China
    • Dates

       
  • Bulletin of Materials Science | News

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