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Microbiologically influenced corrosion of titanium caused by aerobic marine bacterium Pseudomonas aeruginosa
Khan, M. Saleem; Li, Zhong; Yang, Ke; Xu, Dake; Yang, Chunguang; Liu, Dan; Lekbach, Yassir; Zhou, Enze; Kalnaowakul, Phuri
2019
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume35Issue:1Pages:216-222
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
Indexed BySCI
Language英语
WOS IDWOS:000449263900029
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81521
Collection中国科学院金属研究所
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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