title: Accelerated corrosion of 2205 duplex stainless steel caused by marine aerobic Pseudomonas aeruginosa biofilm.
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 CrO3and CrN formed on the 2205 DSS surface in the presence of P. aeruginosa.
authors: 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.
authors: Dake
authors: D
authors: Xu
authors: Department of Chemistry, Liaoning University, Shenyang, 110036, PR China.
authors: Jin
authors: J
authors: Xia
authors: School of Metallurgy, Northeastern University, Shenyang, 110819, PR China.
authors: Enze
authors: E
authors: Zhou
authors: Corrosion and Protection Centre, University of Science and Technology Beijing, Beijing 100083, PR China. Electronic address: dzhang@ustb.edu.cn.
authors: Dawei
authors: D
authors: Zhang
authors: School of Metallurgy, Northeastern University, Shenyang, 110819, PR China.
authors: Huabing
authors: H
authors: Li
authors: Institute of Metal Research, China Academy of Science, Shenyang, 110016, PR China. Electronic address: cgyang@imr.ac.cn.
authors: Chunguang
authors: C
authors: Yang
authors: Department of Chemistry, Liaoning University, Shenyang, 110036, PR China.
authors: Qi
authors: Q
authors: Li
authors: Corrosion and Protection Centre, University of Science and Technology Beijing, Beijing 100083, PR China.
authors: Hai
authors: H
authors: Lin
authors: Corrosion and Protection Centre, University of Science and Technology Beijing, Beijing 100083, PR China.
authors: Xiaogang
authors: X
authors: Li
authors: Institute of Metal Research, China Academy of Science, Shenyang, 110016, PR China.
authors: Ke
authors: K
authors: Yang
mesh_terms: D000332:Aerobiosis; D018441:Biofilms; D003343:Corrosion; D007700:Kinetics; D011550:Pseudomonas aeruginosa / Q000378:metabolism / Q000502:physiology*; D013193:Stainless Steel / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D013193:Stainless Steel
keywords: 2205 duplex stainless steel; Biofilm; Microbiologically influenced corrosion; Pitting; Pseudomonas aeruginosa