Microbiologically influenced corrosion of ferritic steel-zirconium-based metal waste form alloy under simulated geological repository environment

被引：4
作者：
Priya, R. [1 ]
George, R. P. [1 ]
Thyagarajan, K. [1 ]
Ningshen, S. [1 ]
机构：
[1] Indira Gandhi Ctr Atom Res, Corro Sci & Technol Div, Kalpakkam 603102, Tamil Nadu, India
来源：
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY | 2018年 / 53卷 / 05期
关键词：
Ferritic steel - Zr based metal waste form; simulated ground water media; Fe-Zr-rich intermetallic phases; biofilm; corrosion susceptibility; STAINLESS-STEEL; COMPACTED BENTONITE; MICROBIAL ADHESION; DISPOSAL; BACTERIA; INDIA; MICROORGANISMS; TITANIUM; BEHAVIOR; ISSUES;
D O I：
10.1080/1478422X.2018.1470397
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The present work focused on investigating the microbiologically influenced corrosion (MIC) susceptibility of ferritic steel-Zr-based metal waste form (MWF) alloy in simulated ground water media, cultured with a common biofilm former Bacillus sp. Total viable count studies showed a good bacterial attachment on the surface of MWF alloy. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) examination of the biofilm MWF surface revealed preferential adhesion of microbes on Fe-Zr-rich intermetallic phases. Anodic polarisation and electrochemical impedance spectroscopic (EIS) studies showed active corrosion potential (E-corr), higher passive current density (I-pass) and decreased polarisation resistance (R-p) values, confirming the corrosion susceptibility of MWF alloy under Bacillus sp. biofilm.
引用
收藏
页码：340 / 347
页数：8
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