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Accelerated corrosion of 2205 duplex stainless steel caused by marine aerobic Pseudomonas aeruginosa biofilm.

Authors
  • Xu, Dake1
  • Xia, Jin2
  • Zhou, Enze3
  • Zhang, Dawei4
  • Li, Huabing3
  • Yang, Chunguang5
  • Li, Qi2
  • Lin, Hai6
  • Li, Xiaogang6
  • Yang, Ke7
  • 1 Corrosion and Protection Centre, University of Science and Technology Beijing, Beijing 100083, PR China; Institute of Metal Research, China Academy of Science, Shenyang, 110016, PR China. , (China)
  • 2 Department of Chemistry, Liaoning University, Shenyang, 110036, PR China. , (China)
  • 3 School of Metallurgy, Northeastern University, Shenyang, 110819, PR China. , (China)
  • 4 Corrosion and Protection Centre, University of Science and Technology Beijing, Beijing 100083, PR China. Electronic address: [email protected] , (China)
  • 5 Institute of Metal Research, China Academy of Science, Shenyang, 110016, PR China. Electronic address: [email protected] , (China)
  • 6 Corrosion and Protection Centre, University of Science and Technology Beijing, Beijing 100083, PR China. , (China)
  • 7 Institute of Metal Research, China Academy of Science, Shenyang, 110016, PR China. , (China)
Type
Published Article
Journal
Bioelectrochemistry (Amsterdam, Netherlands)
Publication Date
Feb 01, 2017
Volume
113
Pages
1–8
Identifiers
DOI: 10.1016/j.bioelechem.2016.08.001
PMID: 27578208
Source
Medline
Keywords
License
Unknown

Abstract

Microbiologically influenced corrosion (MIC) of 2205 duplex stainless steel (DSS) in the presence of Pseudomonas aeruginosa was investigated through electrochemical and surface analyses. The electrochemical results showed that P. aeruginosa significantly reduced the corrosion resistance of 2205 DSS. Confocal laser scanning microscopy (CLSM) images showed that the depths of the largest pits on 2205 DSS with and without P. aeruginosa were 14.0 and 4.9μm, respectively, indicating that the pitting corrosion was accelerated by P. aeruginosa. X-ray photoelectron spectroscopy (XPS) results revealed that CrO3 and CrN formed on the 2205 DSS surface in the presence of P. aeruginosa.

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