Effect of sulphate reducing bacteria on corrosion of Al-Zn-In-Sn sacrificial anodes in marine sediment

被引：31
作者：
Liu, F. [1 ,2 ]
Zhang, J. [1 ]
Zhang, S. [2 ]
Li, W. [1 ]
Duan, J. [1 ]
Hou, B. [1 ]
机构：
[1] Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
[2] Chongqing Univ, Coll Chem & Chem Engn, Chongqing 400044, Peoples R China
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2012年 / 63卷 / 05期
基金：
中国国家自然科学基金;
关键词：
metals and alloys; corrosion; electrochemical impedance spectroscopy (EIS); scanning electron microscopy (SEM); 316L STAINLESS-STEEL; MILD-STEEL; BEHAVIOR; PREDICTION; ALUMINUM; BIOFILM;
D O I：
10.1002/maco.201005955
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Microbiologically influenced corrosion (MIC) of Al?Zn?In-Sn sacrificial anodes in marine sediment was investigated by exposing samples to sulphate reducing bacteria (SRB). Samples exposed to the sterile marine sediment were used as control. The results show that pitting corrosion occurs in both the sterile marine sediment and the SRB-containing marine sediment. However, the corrosion can be increased sharply by the SRB metabolic activity due to the cathodic depolarization effect. In fact, the effect is based on the consumption of hydrogen which probably results in the acceleration of galvanic corrosion between corrosion products and metal substrate.
引用
收藏
页码：431 / 437
页数：7
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