Journal
CORROSION SCIENCE
Volume 53, Issue 4, Pages 1554-1562Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2011.01.037
Keywords
Steel; EIS; SEM; Pitting corrosion
Funding
- National Natural Science Foundation of China [50971128]
- National RD Infrastructure and Facility Development Program of China [2005DKA10400-CT-2-02]
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The effect of sulfate reducing bacteria (SRB) on the corrosion of the carbon steel Q235 has been investigated in the crevice under the simulated disbonded coating in the soil-extract solutions (SES). The results of electrochemical impedance spectroscopy (EIS) show that the corrosion rate is inhibited in the SES with SRB during the stationary phase of SRB, but enhanced during the death phase. The comparison of the polarization (R(p)) and the charge transfer resistances (R(p)) has indicated that the biofilm seriously influences the reactive procedure of metal/solution interface. SRB is found in the pits on the surface of the steel. (c) 2011 Elsevier Ltd. All rights reserved.
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