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Effects of SRB on Corrosion of Pure Zinc Anode in Marine Sediment |
LIU Fengling1,2, ZHANG Shengtao1, ZHANG Jie2, LI Weihua2 |
1.College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044
2.Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071 |
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Cite this article:
LIU Fengling ZHANG Shengtao ZHANG Jie LI Weihua. Effects of SRB on Corrosion of Pure Zinc Anode in Marine Sediment. Chin J Mater Res, 2010, 24(4): 411-418.
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Abstract Effects of Sulfate Reducing Bacteria (SRB) on corrosion of pure zinc anode in marine sediment was investigated by using electrochemical impedance spectroscopy, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The macrocell corrosion of the coupons with or without SRB in marine sediment was also studied. The results show that the passive film of pure zinc in marine sediment is quickly destroyed by SRB, and the corrosion rate of the coupons is increased. The corrosion of samples in the marine sediment with SRB is accelerated as the anode of macrocell, but the corrosion of samples in the marine sediment without SRB is inhibited as the cathode of macrocell.
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Received: 01 April 2010
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Fund: Supported by National Key Technology R&D Program No.2007BAB27B01 and Knowledge Innovation Project of the Chinese Academy of Sciences No.KZCX2-YW-210. |
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