The influence of sulphate-reducing bacteria biofilm on the corrosion of stainless steel AISI 316
The influence of sulphate-reducing bacteria biofilm on the corrosion of stainless steel AISI 316
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DOI：
10.1016/j.corsci.2006.10.040
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发表时间：
2007-05-01
影响因子：
8.3
通讯作者：
Pehkonen, Simo Avi
中科院分区：
文献类型：
--
作者：
Sheng, Xiaoxia;Ting, Yen-Peng;Pehkonen, Simo Avi
本工作研究了硫酸盐还原细菌脱硫弧菌和当地海洋分离株对AISI 316不锈钢的微生物影响腐蚀(MIC)。用原子力显微镜(AFM)分析了生物膜和凹坑形态随时间的变化。用等效电路解释了电化学阻抗谱(EIS)的结果，以模拟电极/生物膜/溶液界面的物理电学特性。脱硫菌在金属表面形成一层生物膜，而海洋分离株在金属表面形成两层：生物膜层和硫化亚铁沉积层。AFM图像证实了EIS建模的结果，该结果显示随着时间的推移，生物膜附着和随后的分离。(C)2006爱思唯尔有限公司。保留所有权利。
This work investigates microbial ly-influenced corrosion (MIC) of stainless steel AISI 316 by two sulphate-reducing bacteria, Desulfovibrio desulfuricans and a local marine isolate. The biofilm and pit morphology that developed with time were analyzed using atomic force microscopy (AFM). Electrochemical impedance spectroscopy (EIS) results were interpreted with an equivalent circuit to model the physicoelectric characteristics of the electrode/biofilm/solution interface. D. desulfuricans formed one biofilm layer on the metal surface, while the marine isolate formed two layers: a biofilm layer and a ferrous sulfide deposit layer. AFM images corroborated results from the EIS modeling which showed biofilm attachment and subsequent detachment over time. (C) 2006 Elsevier Ltd. All rights reserved.