Corrosion behavior of duplex stainless steels in marine media containing sulfate reducing bacteria: A laboratory study

M. M. Vargas-Avila, Raman K. Singh, C. Panter, B. W. Cherry, Peter Farinha, Hector A Videla

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This paper presents the results of research into corrosion behavior of duplex stainless steel (DSS) 2205 in 0.6M NaCl solution (synthetic seawater) and Postgate B+ microbiological medium, under abiotic and biotic conditions. The effect of the presence of sulfate reducing bacteria (SRB) on corrosion of DSS 2205 in comparison to abiotic conditions is studied and discussed. electrochemical tests included the measurement of open circuit potential (OCP) and anodic polarization scans. These indicated that electrochemical behavior of DSS 2205 in the biotic condition is considerably different by comparison to that in the abiotic environment. In particular, the resistance to pitting corrosion of DDS 2205 decreases with increasing of time exposure to SRB environments.

Original languageEnglish
Title of host publicationCorrosion 2009
Subtitle of host publication22-26 March 2009, Atlanta, GA, United State [proceedings]
Number of pages14
Publication statusPublished - 2009

Publication series

NameNACE - International Corrosion Conference Series


  • Chloride environment
  • Duplexstainless steel (DSS)
  • Marine environment
  • Microbiologically influenced corrosion (MIC)
  • Sulfate reducing bacteria (SRB)

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