PASSIVITY BREAKDOWN OF MILD STEEL IN SEA WATER IN THE PRESENCE OF SULPHATE REDUCING BACTERIA

The electrochemical behaviour of 1020 SAE carbon steel in sea water or 0.5 M sodium chloride solutions was studied in the presence of sulphate reducing bacteria (isolated from ship fuel storage tanks) and different concentrations of sulphides. Potentiostatic polarisation techniques were used to follow the evolution of corrosion and pitting potentials in these media. A change of pitting potential of 1020 SAE steel towards more active values was observed at low sulphide concentrations or in the presence of sulphate reducers, suggesting that the role of the latter in the corrosion process might be indirect. The influence of oxygen level on the metal attack is also analysed.

  • Availability:
  • Corporate Authors:

    National Association of Corrosion Engineers

    2400 West Loop South
    Houston, TX  USA  77027
  • Authors:
    • Salvarezza, R C
    • Videla, H A
  • Publication Date: 1980-10

Media Info

  • Features: References;
  • Pagination: p. 550
  • Serial:
    • CORROSION
    • Volume: 36
    • Publisher: NACE International
    • ISSN: 0010-9312

Subject/Index Terms

Filing Info

  • Accession Number: 00329984
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: May 21 1981 12:00AM