Mechanism of microbiologically influenced corrosion of X65 steel in seawater containing sulfate-reducing bacteria and iron-oxidizing bacteria
Sulfate-reducing bacteria (SRB) and iron-oxidizing bacteria (IOB) are one of the typical representatives of anaerobic and aerobic bacteria, which can form a synergistic community (mixed species biofilm) on the surface of material. In this work, the corrosion behavior of X65 steel in seawater contain...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-09-01
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| Series: | Journal of Materials Research and Technology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785419306386 |
| _version_ | 1818389951258034176 |
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| author | Meiying Lv Min Du Xia Li Yongyong Yue Xuchao Chen |
| author_facet | Meiying Lv Min Du Xia Li Yongyong Yue Xuchao Chen |
| author_sort | Meiying Lv |
| collection | DOAJ |
| description | Sulfate-reducing bacteria (SRB) and iron-oxidizing bacteria (IOB) are one of the typical representatives of anaerobic and aerobic bacteria, which can form a synergistic community (mixed species biofilm) on the surface of material. In this work, the corrosion behavior of X65 steel in seawater containing SRB and IOB was investigated with electrochemical impedance spectroscopy, potentiodynamic polarization, scanning electron microscopy, energy dispersive spectroscopy and X-ray photoelectron spectroscopy. Results showed that the combination of anaerobic SRB and aerobic IOB affected the corrosion behavior of X65 steel greatly, and the corrosion rate was higher than that in single SRB or IOB medium. The corrosion mechanisms of X65 steel in mixed SRB and IOB could be divided into three stages, which were controlled by the metabolic activities of bacteria (SRB and IOB), biofilm structure and metabolic products comprehensively. Keywords: Sulfate-reducing bacteria, Iron-oxidizing bacteria, Microbiologically influenced corrosion, Biofilm, Metabolic products |
| first_indexed | 2024-12-14T04:49:53Z |
| format | Article |
| id | doaj.art-06e95598a3784348a7bf07c728b683c6 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-14T04:49:53Z |
| publishDate | 2019-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-06e95598a3784348a7bf07c728b683c62022-12-21T23:16:34ZengElsevierJournal of Materials Research and Technology2238-78542019-09-018540664078Mechanism of microbiologically influenced corrosion of X65 steel in seawater containing sulfate-reducing bacteria and iron-oxidizing bacteriaMeiying Lv0Min Du1Xia Li2Yongyong Yue3Xuchao Chen4The Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P.R. ChinaCorresponding author.; The Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P.R. ChinaThe Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P.R. ChinaThe Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P.R. ChinaThe Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, P.R. ChinaSulfate-reducing bacteria (SRB) and iron-oxidizing bacteria (IOB) are one of the typical representatives of anaerobic and aerobic bacteria, which can form a synergistic community (mixed species biofilm) on the surface of material. In this work, the corrosion behavior of X65 steel in seawater containing SRB and IOB was investigated with electrochemical impedance spectroscopy, potentiodynamic polarization, scanning electron microscopy, energy dispersive spectroscopy and X-ray photoelectron spectroscopy. Results showed that the combination of anaerobic SRB and aerobic IOB affected the corrosion behavior of X65 steel greatly, and the corrosion rate was higher than that in single SRB or IOB medium. The corrosion mechanisms of X65 steel in mixed SRB and IOB could be divided into three stages, which were controlled by the metabolic activities of bacteria (SRB and IOB), biofilm structure and metabolic products comprehensively. Keywords: Sulfate-reducing bacteria, Iron-oxidizing bacteria, Microbiologically influenced corrosion, Biofilm, Metabolic productshttp://www.sciencedirect.com/science/article/pii/S2238785419306386 |
| spellingShingle | Meiying Lv Min Du Xia Li Yongyong Yue Xuchao Chen Mechanism of microbiologically influenced corrosion of X65 steel in seawater containing sulfate-reducing bacteria and iron-oxidizing bacteria Journal of Materials Research and Technology |
| title | Mechanism of microbiologically influenced corrosion of X65 steel in seawater containing sulfate-reducing bacteria and iron-oxidizing bacteria |
| title_full | Mechanism of microbiologically influenced corrosion of X65 steel in seawater containing sulfate-reducing bacteria and iron-oxidizing bacteria |
| title_fullStr | Mechanism of microbiologically influenced corrosion of X65 steel in seawater containing sulfate-reducing bacteria and iron-oxidizing bacteria |
| title_full_unstemmed | Mechanism of microbiologically influenced corrosion of X65 steel in seawater containing sulfate-reducing bacteria and iron-oxidizing bacteria |
| title_short | Mechanism of microbiologically influenced corrosion of X65 steel in seawater containing sulfate-reducing bacteria and iron-oxidizing bacteria |
| title_sort | mechanism of microbiologically influenced corrosion of x65 steel in seawater containing sulfate reducing bacteria and iron oxidizing bacteria |
| url | http://www.sciencedirect.com/science/article/pii/S2238785419306386 |
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