Electrochemical study of corrosion behaviour of carbon steel A106 and stainless steel 304 in aqueous monoethanolamine

Y. Sun, J. E. Remias, J. K. Neathery, K. Liu

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Corrosion behaviour of carbon steel A106 and stainless steel 304 (SS304) in aqueous monoethanolamine was studied by performing electrochemical polarisation experiments. Potentiodynamic curves were studied and compared under conditions with different temperatures, carbon loading and O2 percentage in purging gases. It was found that corrosion of A106 and SS304 was promoted under conditions with higher temperature. While the presence of O2 speeds the corrosion of A106, it has a negligible impact on SS304 at 80°C and lowers the corrosion rate at 40°C. Corrosion rates and other important parameters were calculated based on the electrochemical curves for A106. Sample surfaces after tests were examined by scanning electron microscopy and energy dispersive spectroscopy. Mechanisms involved in iron dissolution and passivation from oxide films were discussed.

Original languageEnglish
Pages (from-to)724-731
Number of pages8
JournalCorrosion Engineering Science and Technology
Volume46
Issue number6
DOIs
StatePublished - Sep 2011

Keywords

  • Aqueous monoethanolamine
  • CO loading
  • CO capture
  • Potentiodynamic curve
  • Steel corrosion
  • Tafel analysis

ASJC Scopus subject areas

  • Chemistry (all)
  • Chemical Engineering (all)
  • Materials Science (all)

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