Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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Effect of alloying Copper on the Corrosion Resistance of Stainless Steels in Chloride Media

  • Ujiro, T. (Technical Research Laboratories, Kawusaki Steels Corp.) ;
  • Satoh, S. (Technical Research Laboratories, Kawusaki Steels Corp.) ;
  • Staehle, R.W. (Corrosion Research Center, Department of Chemical Engineering and Materials Science, University of Minnesota) ;
  • Smyrl, W.H. (Corrosion Research Center, Department of Chemical Engineering and Materials Science, University of Minnesota)
  • Published : 2003.06.01
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Abstract

In order to explain the effect of alloying Cu on the corrosion resistance of stainless steels in chloride media for both ferritic and austenitic stainless steels, the corrosion behavior of Cu-bearing stainless steels was investigated. Alloying Cu showed beneficial effect in an active potential range and harmful effect in a noble potential range. The beneficial effect of alloying Cu was explained by the stability of deposited Cu on an anodic surface. Difference in the effect of alloying Cu between the ferritic and austenitic steels was ascribed by the differences in their corrosion potentials and the morphology of the deposited Cu.

Keywords

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