The effect of Mg alloy substrate on "electroless" E-coating performance

  • Song G
  • Liu M
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Abstract

The corrosion performance of " electroless" E-coating pre-film on eight different Mg alloys is compared in a 5. wt.% NaCl. The results show that the alloys have different levels of surface alkalization effect, resulting in different thickness of films formed on the alloys. The alloying elements in a Mg alloy do not directly influence the film formation and corrosion performance. Instead, the corrosion resistance of substrate has a significant effect on the degradation or corrosion process of the coated Mg alloy. The corrosion resistance of the substrate Mg alloy can influence the porosity of pre-film during " electroless" E-coating deposition, and it is also a critical factor determining the film corrosion degradation. © 2011 Elsevier Ltd.

Author-supplied keywords

  • A. Mg alloy
  • B. EIS
  • C. Coating
  • C. Corrosion
  • C. Surface treatment

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Authors

  • Guang Ling Song

  • Minghong Liu

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