Effects of anaerobe in sea bottom sediment on the corrosion of carbon steel |
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Authors: | Ma Shi-de Huang Yan-liang Zhu Su-lan Sun Jia-rui Du Ai-ling |
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Institution: | (1) Institute of Oceanology, Chinese Academy of Sciences, 266071 Qingdao;(2) Design Institute of Daqing Oil Field, 163712 Daqing;(3) Shandong Industrial University, 250061 Jinan |
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Abstract: | This in situ corrosion study of steel in sea bottom sediment by the "Plate TransplantingBurying Method" (MD method ) showed that the corrosion rate of steel in sea bottom sediment with sulfur reduction bacteria (SRB) can be as high as ten times that in sea bottom sediment without SRB . The ex-periments in simulating sea bottom sediments with different concentrations of cultured SRB showed that theelectrochemical polarization behaviour of steel in sea bottom sediment with and without SRB were differ-ent SRB altered the polarization behaviour of steel significantly by acididfying the environment so that ap-parent hydrogen depolarization occurred and accelerated the corrosion of steel. |
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Keywords: | anaerobe sea bottom sediment steel |
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