Microbiologically influenced corrosion of titanium caused by aerobic marine bacterium Pseudomonas aeruginosa
Khan, M. Saleem1,2; Li, Zhong3; Yang, Ke1; Xu, Dake3; Yang, Chunguang1; Liu, Dan3; Lekbach, Yassir4; Zhou, Enze3; Kalnaowakul, Phuri5
Corresponding AuthorYang, Ke( ; Xu, Dake(
AbstractMicrobiologically influenced corrosion (MIC) is a big threat to the strength and safety of many metallic materials used in different environments throughout the world. The metabolites and bioactivity of the microorganisms cause severe deterioration on the metals. In this study, MIC of pure titanium (Ti) was studied in the presence of a highly corrosive aerobic marine bacterium Pseudomonas aeruginosa. The results obtained from electrochemical test showed that Ti was corrosion resistant in the abiotic culture medium after 14 d, while the increased corrosion current density (i(co)(rr)) obtained from polarization curves and the decreased charge transfer resistance (R-ct) from electrochemical impedance spectroscopy (EIS) indicated the accelerated corrosion of Ti caused by P. aeruginosa biofilm. For further confirmation of the above results, the surface of Ti was investigated using scanning electron microscopy (SEM), confocal laser scanning microscopy (CLSM) and X-ray photoelectron spectroscopy (XPS). According to the XPS results, TiO2 was formed in both abiotic and biotic conditions, while unstable oxide Ti2O3 was detected in the presence of P. aeruginosa, leading to the defects in the passive film and localized corrosion. Pitting corrosion was investigated with the help of CLSM, and the largest pit depth found on Ti surface immersed in P. aeruginosa was 1.2 mu m. Ti was not immune to MIC caused by P. aeruginosa. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordTi Microbiologically influenced corrosion Pseudomonas aeruginosa
Funding OrganizationNational Natural Science Foundation of China ; National Basic Research Program of China ; National Environmental Corrosion Platform (NECP)
Indexed BySCI
Funding ProjectNational Natural Science Foundation of China[U1660118] ; National Basic Research Program of China[2014CB643300] ; National Environmental Corrosion Platform (NECP)
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000449263900029
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Cited Times:52[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorYang, Ke; Xu, Dake
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Northeastern Univ, Corros & Protect Div, Shenyang Natl Lab Mat Sci, Shenyang 110819, Liaoning, Peoples R China
4.Sidi Mohamed Ben Abdellah Univ, Fac Sci & Technol, Lab Microbial Biotechnol, Fes 2202, Morocco
5.Kasetsart Univ, Bangkok 10900, Thailand
Recommended Citation
GB/T 7714
Khan, M. Saleem,Li, Zhong,Yang, Ke,et al. Microbiologically influenced corrosion of titanium caused by aerobic marine bacterium Pseudomonas aeruginosa[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(1):216-222.
APA Khan, M. Saleem.,Li, Zhong.,Yang, Ke.,Xu, Dake.,Yang, Chunguang.,...&Kalnaowakul, Phuri.(2019).Microbiologically influenced corrosion of titanium caused by aerobic marine bacterium Pseudomonas aeruginosa.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(1),216-222.
MLA Khan, M. Saleem,et al."Microbiologically influenced corrosion of titanium caused by aerobic marine bacterium Pseudomonas aeruginosa".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.1(2019):216-222.
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