• Y ZHAO

      Articles written in Bulletin of Materials Science

    • Effect of temperature on structure and corrosion resistance for electroless NiWP coating

      M Q YU Q QIAO F YOU C L LI Y ZHAO Z Z XIAO H L LUO Z F XU KAZUHIRO MATSUGI J K YU

      More Details Abstract Fulltext PDF

      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.

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