Corrosion behavior of low-alloy steel in the presence of Desulfovibrio caledoniensis

被引：6
作者：
Cetin, D. [1 ]
Aksu, M. L. [1 ]
机构：
[1] Gazi Univ, Gazi Fac Educ, TR-06500 Ankara, Turkey
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2013年 / 64卷 / 03期
关键词：
EIS; low-alloy steel; microbial corrosion; polarization; SULFATE-REDUCING BACTERIA; STAINLESS-STEEL; DESULFOTOMACULUM SP; PASSIVE FILM; BIOFILM; SRB; BIOCORROSION; MEDIA;
D O I：
10.1002/maco.201106142
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Sulfate-reducing bacteria (SRB) are shown to be common inhabitants of oil reservoirs. Desulfovibrio caledoniensis isolated from a production well was used in this study. After an incubation period of 1 month with the SRB culture, two layers of corrosion products with different compositions were detected on the test coupons. The Tafel plots showed that the corrosion potential exhibited a cathodic shift and the corrosion rates increased with the incubation time. The analysis of the Nyquist diagrams revealed that the diffusion process begins to dominate with time in bacteria containing medium. These results are in good accordance with the Tafel data.
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收藏
页码：236 / 241
页数：6
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