Corrosion Behavior of 10CrNiCu Steel Influenced by Thiobacillus Ferrooxidans

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The microbial corrosion behaviors of 10CrNiCu steel influenced by Thiobcillus ferrooxidans (T.f) were studied by microbiological, electrochemical and surface analysis method. The open circuit potential (Eocp) and electrochemical impedance spectroscopy (EIS) of the 10CrNiCu electrodes were measured in immersion electrode way with and without T.f solution at the time of the 0, 2nd, 7th, 14th and 21st days, respectively. Eocp of the electrode immersed in sterile medium shifted to negative potential with the immersion time while that for immersion in T.f solutions shifted negatively, then positively and finally negatively. EIS results were interpreted with different equivalent circuits of the electrode/biofilm/solution interface. The result of SEM indicated that, after 21 immersion days, there were different sizes of pits on the 10CrNiCu surface occurred in T.f solution while no evidence of the pitting corrosion was observed on the steel surface immersed in the sterile medium.

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Periodical:

Advanced Materials Research (Volumes 233-235)

Edited by:

Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He

Pages:

2633-2639

Citation:

K. Soe et al., "Corrosion Behavior of 10CrNiCu Steel Influenced by Thiobacillus Ferrooxidans", Advanced Materials Research, Vols. 233-235, pp. 2633-2639, 2011

Online since:

May 2011

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$38.00

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