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    • Keywords


      Galvanization by hot-dipping; intermetallic layer; 25%Al-Zn alloy coating.

    • Abstract


      25%Al-Zn alloy coating performs better than hot dip galvanized coating and 55%Al-Zn-Si coating with regard to general seawater corrosion protection. This study deals with the interfacial intermetallic layer's growth, which affects considerably the corrosion resistance and mechanical properties of 25%Al-Zn alloy coatings, by means of three-factor quadratic regressive orthogonal experiments. The regression equation shows that the intermetallic layer thickness decreases rapidly with increasing content of Si added to the Zn-Al alloy bath, increases with rise in the bath temperature and prolonging dip time. The most effective factor that determined the thickness of intermetallic layer was the amount of Si added to Zn-Al alloy bath, while the effect of bath temperature and dip time on the thickness of intermetallic layer were not very obvious.

    • Author Affiliations


      Yan Li1 Ying Ma1 Baorong Hou1 Falun Feng2 Xujun Wei2

      1. Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, P.R. China
      2. Northeastern University, Shenyang 110006, P.R. China
    • Dates

  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

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