Journal
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
Volume 70, Issue 10, Pages 1852-1861Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/maco.201910872
Keywords
iron-oxidizing bacteria; microbiologically influenced corrosion; pitting; seawater environment; X65-pipeline steel
Funding
- National Natural Science Foundation of China [51871204]
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The corrosion behavior and mechanism of iron-oxidizing bacteria (IOB) on X65 steel in seawater are studied. This study uses the methods of weight loss, electrochemical measurements, and surface analysis. The results show that the IOB increases the corrosion damage degree of steel. Pittings are observed in the medium with IOB. The potentiodynamic polarization curves show that the anodic reaction rate is accelerated in the corrosion process of IOB. The synergies in corrosion between the metal surface, abiotic corrosion products, and bacterial cells, and the pitting corrosion mechanism of X65 steel are discussed.
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