Microbiologically influenced corrosion of titanium caused by aerobic marine bacterium Pseudomonas aeruginosa

doi:10.1016/j.jmst.2018.08.001

CORC > 金属研究所 > 中国科学院金属研究所

	Microbiologically influenced corrosion of titanium caused by aerobic marine bacterium Pseudomonas aeruginosa
	Khan, M. Saleem 1,2; Li, Zhong 3; Yang, Ke 2; Xu, Dake 3; Yang, Chunguang 2; Liu, Dan 3; Lekbach, Yassir 4; Zhou, Enze 3; Kalnaowakul, Phuri 5
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2019
卷号	35 期号:1 页码:216-222
关键词	Ti Microbiologically influenced corrosion Pseudomonas aeruginosa
ISSN号	1005-0302
DOI	10.1016/j.jmst.2018.08.001
通讯作者	Yang, Ke(kyang@imr.ac.cn) ; Xu, Dake(xudake@mail.neu.edu.cn)
英文摘要	Microbiologically 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.
资助项目	National Natural Science Foundation of China[U1660118] ; National Basic Research Program of China[2014CB643300] ; National Environmental Corrosion Platform (NECP)
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000449263900029
资助机构	National Natural Science Foundation of China ; National Basic Research Program of China ; National Environmental Corrosion Platform (NECP)
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/130480]
专题	金属研究所_中国科学院金属研究所
通讯作者	Yang, Ke; Xu, Dake
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, 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
推荐引用方式 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.