REVERSIBLE ACCELERATION OF THE CORROSION OF AISI 304 STAINLESS STEEL EXPOSED TO SEAWATER INDUCED BY GROWTH AND SECRETIONS OF THE MARINE BACTERIUM VIBRIO NATRIEGENS
REVERSIBLE ACCELERATION OF THE CORROSION OF AISI 304 STAINLESS STEEL EXPOSED TO SEAWATER INDUCED BY GROWTH AND SECRETIONS OF THE MARINE BACTERIUM VIBRIO NATRIEGENS
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DOI：
10.5006/1.3585998
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发表时间：
1986-04
期刊：
影响因子：
1.6
通讯作者：
D. Nivens;P. Nichols;Joan Henson;G. Geesey;D. White
中科院分区：
文献类型：
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作者：
D. Nivens;P. Nichols;Joan Henson;G. Geesey;D. White
摘要 当非硫酸盐还原性海洋细菌 Vibrio natriegens 在海洋介质中生长时，其生长会增加 AISI 304 不锈钢 (SS) 试样的腐蚀电流密度 (CD)。在 V. natriegens 的 6 天培养期内，根据塔菲尔常数和极化电阻计算得出的腐蚀速率（以腐蚀 CD (Icorr) 估算）从 230 nA/cm2 增加到 2900 nA/cm2。就在腐蚀CD快速增加之前，吖啶橙染色后通过落射荧光显微镜观察到细菌细胞定植于SS表面。在暴露于海水的第三天，腐蚀 CD 的快速增加与定植细菌细胞外物质的出现相关，如通过 (1) 落射荧光显微镜、(2) 扫描电子显微镜 (SEM) 和 (3) 使用漫反射通过傅里叶变换红外光谱 (FT-IR) 对冻干生物膜进行无损分析观察到的。定植细菌的细胞外产物可...
Abstract Growth of the nonsulfate-reducing marine bacterium Vibrio natriegens increased the corrosion current density (CD) of AISI 304 stainless steel (SS) coupons when grown in a marine medium. The corrosion rate, estimated as the corrosion CD (Icorr), calculated from the Tafel constants and polarization resistance, increased from 230 to 2900 nA/cm2 during a 6-day incubation period with V. natriegens. Just before the rapid increase in the corrosion CD, bacterial cells were seen by epifluorescent microscopy after acridine orange staining to colonize the SS surface. On the third day of exposure to seawater, the rapid increase in the corrosion CD correlated with the appearance of extracellular material from the colonizing bacteria, as observed by (1) epifluorescent microscopy, (2) scanning electron microscopy (SEM), and (3) nondestructive analysis of lyophilized biofilms by Fourier transform-infrared spectroscopy (FT-IR) using diffuse reflectance. The extracellular products from the colonizing bacteria corr...