Corrosion Behaviors of 0Cr18Ni9 Stainless Steel under the Combination Action of Sulfate-Reducing Bacteria and V.natriegens

Cai Xiang Gu; Xiao Ming Zhao; Yan Sheng Yin; Gui Jun Ji

doi:10.4028/www.scientific.net/AMR.356-360.161

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 356-360Corrosion Behaviors of 0Cr18Ni9 Stainless Steel...

Corrosion Behaviors of 0Cr18Ni9 Stainless Steel under the Combination Action of Sulfate-Reducing Bacteria and V.natriegens

Abstract:

Advantage strains SRB and V.natriegens were obtained from the China East Sea for this study. Polarization curves, corrosion potential, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analyses were adopted in order to investigate the corrosion behaviors of 0Cr18Ni9 stainless steel under the combination action of anaerobic SRB and facultative anaerobic V.natriegens, The characteristics and mechanisms of microbial corrosion action in sea water were analyzed in this paper. The results show that SRB and V.natriegens promote each other’s growth when cultivated in the mixed microbe medium, in which the rate of corrosion is higher than that in the single microbe; Under the combined action of the mixed microbe, the microbial film gets wider and thicker, and corrosion products and metabolite are produced, which furthermore accelerates the passivation and pit corrosion to the 0Cr18Ni9 stainless steel.

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Periodical:

Advanced Materials Research (Volumes 356-360)

Pages:

161-164

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.356-360.161

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Online since:

October 2011

Authors:

Cai Xiang Gu, Xiao Ming Zhao, Yan Sheng Yin, Gui Jun Ji

Keywords:

0Cr18Ni9 Stainless Steel, EDS Analysis, Freely Corroding Potentials, Polarization Curve, SRB, V. natriegens

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