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| Effect of Magnetic Field on Microbiologically-influenced Corrosion Behavior of Q235 Steel |
| LI Kejuan, ZHENG Bijuan, CHEN Bi, LIU Hongfang |
Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Sciences and Technology, Wuhan
430074, China |
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Abstract The corrosion behavior of Q235 steel in a sulfate-reducing bacteria (SRB) solution in the presence and absence of magnetic field (MF) respectively was investigated by means of mass loss method, electrochemical techniques and surface analysis methods. The results showed that MF could inhibit the corrosion of Q235 steel to certain extent. The measured impedance implied that the MF delayed the formation of SRB biofilms on Q235 steel. SEM observation results indicated that the application of the MF resulted in homogeneous and compact biofilms with high adhesion to the surface of electrode. After removing the corrosion products, the corroded surface of Q235 steel without MF showed many corrosion pits and several corrosion cracks, while that with MF was much more uniform. It implied the application of MF could effectively inhibit the microbiologically influenced corrosion of Q235 steel.
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Received: 19 January 2013
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