Corrosion Behavior of Steel A3 Influenced by Bacillus

被引：2

作者：

Du Juan ^{[1
]}

Li Song-Mei ^{[1
]}

Liu Jian-Hua ^{[1
]}

Yu Mei ^{[1
]}

机构：

[1] Beihang Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Aerosp Mat & Performance, Beijing 100191, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2010年 / 26卷 / 06期

关键词：

Electrochemical impedance spectroscopy; Bacillus; Microbiologically influenced corrosion; Surface analysis method; Weight loss method; Polarization curve; ACCELERATION;

D O I：

10.3866/PKU.WHXB20100605

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Surface analysis, mass loss and electrochemical mesurements were used to investigate the corrosion behavior of steel A3 under the effect of Bacillus. Scanning electron microscopy (SEM) indicated that the presence of Bacillus resulted in a compact biofilm after 7 days of exposure, which effectively protected the coupon from being corroded by the solution. Electrochemical impedance spectroscopy (EIS) showed that the number of time constants changed from 2 to 3 and returned to 2 in the Bacillus system. The mass loss and polarization curve results showed that the activity of the bacteria determined the effectiveness of the biofilm. The protective ability of the biofilm decreased when the activity of the bacteria decreased.

引用

页码：1527 / 1534

页数：8

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