Microbially induced corrosion of D9 stainless steel-zirconium metal waste form alloy under simulated geological repository environment

被引：12
|
作者：
Bairi, Lipika Rani [1 ]
George, R. P. [1 ]
Mudali, U. Kamachi [1 ]
机构：
[1] Indira Gandhi Ctr Atom Res, Corros Sci & Technol Grp, Kalpakkam 603102, Tamil Nadu, India
来源：
CORROSION SCIENCE | 2012年 / 61卷
关键词：
Stainless steel; Zirconium; Intermetallics; Microbiological corrosion; MICROBIOLOGICALLY INFLUENCED CORROSION; ADHESION; MICROSTRUCTURE; RESISTANCE; BEHAVIOR; ISSUES; WATER; FILM;
D O I：
10.1016/j.corsci.2012.04.019
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Metal waste form (MWF) alloy specimens were exposed to Bacillus sp. and Pseudomonas sp. cultured in simulated Kalpakkam and Rajasthan ground water media to study the microbially induced corrosion. Total viable count and epifluorescence microscopic results showed good bacterial attachment on MWF surface. Scanning electron microscopy and atomic force microscopy studies on etched MWF surfaces showed preferential bacterial adhesion on the Zr-rich intermetallic phases. Potentiodynamic polarization experiments showed active corrosion potential and higher current density for biofilmed surface. Electrochemical impedance spectroscopic study showed passive film weakening under the biofilm. Corrosion effect of Pseudomonas sp. is comparatively more than Bacillus sp. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：19 / 27
页数：9
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