Record number :
2100074
Title of article :
Microbially influenced corrosion of stainless steel by marine bacterium Vibrio natriegens: (I) Corrosion behavior
Author/Authors :
Cheng، نويسنده , , Sha and Tian، نويسنده , , Jintao and Chen، نويسنده , , Shougang and Lei، نويسنده , , Yanhua and Chang، نويسنده , , Xueting and Liu، نويسنده , , Tao and Yin، نويسنده , , Yansheng، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Pages :
5
From page :
751
To page :
755
Abstract :
The microbially influenced corrosion of stainless steel (SS) by marine bacterium Vibrio natriegens (V. natriegens) was investigated using surface analysis (atomic force microscopy (AFM), scanning electron microscopy (SEM), and energy dispersive X-ray analysis (EDXA)) and electrochemical techniques (the open circuit potential, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization curves ). AFM images corroborated the results from the EIS models which show biofilm attachment and subsequent detachment over time. The SEM images revealed the occurrence of micro-pitting corrosion underneath the biofilms on the metal surface after the biofilm removal. The presence of carbon, oxygen, phosphor and sulfur obtained from EDXA proved the formation of biofilm. The electrochemical results showed that the corrosion of SS was accelerated in the presence of V. natriegens based on the decrease in the resistance of the charge transfer resistance (Rct) obtained from EIS and the increase in corrosion current densities obtained from potentiodynamic polarization curves.
Keywords :
Stainless steel , Vibrio natriegens , Corrosion Behavior , Microbially influenced corrosion
Journal title :
Materials Science and Engineering C
Journal title :
Materials Science and Engineering C
Serial Year :
2009
Link To Document :
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