Abstract
Effect of sulfate reducing bacteria (SRB) on the galvanic corrosion between 2205 SS (stainless steel) and X52 carbon steel in enriched artificial seawater (EASW) was comprehensively investigated, which was significant for understanding the microbiologically influenced corrosion of bimetallic composite pipelines. Electrochemical tests indicate that the galvanic effect in the SRB-containing medium was higher than that in the sterile medium. The coupling also promoted the corrosion of 2205 SS in biotic medium with a 13-fold increase in weight loss. The galvanic effect could increase the sessile cell density and accelerate the deterioration of the passive film of 2205 SS.
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