Abstract
The corrosion behavior of carbon steel in simulated marine atmospheric environment combined with microorganisms was investigated. Results demonstrated that weight loss was increased, pitting corrosion was aggravated and the velocity of charge transfer and ionic migration were accelerated in media with bacteria. 16S rDNA sequencing revealed that iron-reducing bacteria (IRB) grew into a dominant population in the biofilm. The compact and protective corrosion product film in the inner layer was disrupted locally in presence of IRB. The corrosion mechanism of carbon steel in marine atmospheric environment influenced by IRB via dissimilatory Fe(Ⅲ) reduction had been discussed.
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