Abstract
Effect of Bacillus subtilis C2 (BS) on the corrosion behavior of cold rolled steel (CRS) in artificial seawater has been studied. A visible decrease in pH value and a noticeable decrease in open circuit potential were observed in solutions containing BS compared to the sterile solutions. Biofilm was evidently observed on CRS surface after immersion in solution containing BS for some time, the biofilm increased and became more and more compact with increasing immersion time. A significant reduction in the latter corrosion rate was observed although the initial corrosion was clearly accelerated in the presence of BS.
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