Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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Review of the Usefulness of Inhibitors for Reducing the Corrosion of Iron in $H_2S$ Environments

  • Kim, Han-Sang (Nuclear Engineering & Technology Institute, Korea Hydro & Nuclear Power Co.) ;
  • Yoon, Eun-Sub (Nuclear Engineering & Technology Institute, Korea Hydro & Nuclear Power Co.)
  • Published : 2009.02.01
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Abstract

The influence of $H_2S$ on the corrosion of iron and the corrosion prevention mechanism of an inhibitor was investigated with a differential capacitance measurement and a weight loss measurement method. The results show that $H_2S$ accelerates both the anodic iron dissolution and the cathodic hydrogen evolution in most cases. However, $H_2S$ acts as an inhibitor of the corrosion of iron under certain special conditions. An EIS method is proposed to explain the ability of inhibitors.

Keywords

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