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Investigation on Corrosion Resistance of Welded Cu-Bearing 304L Stainless Steel AgainstPseudomonas aeruginosa
Yin, Lu1,2; Xi, Tong1; Yang, Chunguang1; Zhao, Jinlong1; Sun, Yupeng1; Zhao, Hanyu1; Yang, Ke1
Corresponding AuthorYang, Chunguang(cgyang@imr.ac.cn)
2020-06-05
Source PublicationFRONTIERS IN MATERIALS
ISSN2296-8016
Volume7Pages:11
AbstractIn this work, the microbiologically influenced corrosion (MIC) behaviors of welded 304L stainless steel (304L SS) and Cu-bearing 304L SS (304L-Cu SS) in aPseudomonas aeruginosaculture medium were comparatively studied. Open circuit potential (OCP), linear polarization resistance (LPR), electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization were employed to characterize the corrosion behavior of the (welded) steel substrates. The biofilm morphology and the live/dead staining condition of the sessile cells were observed by scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM). And the pitting corrosion was investigated with a 3D mode of CLSM. The experimental results showed that the copper (Cu) addition had no obvious influence on the microstructure of 304L SS in welding zones (WZs) and base metal. The WZs of 304L SS and 304L-Cu SS in sodium chloride solution possessed a lower pitting potential and a higher corrosion current density. However, owing to the continuous release of Cu ions, inhibiting the excretion of corrosive extracellular polymeric substances (EPSs) and the extracellular electron transport (EET) process, both the localized and uniform corrosion attack induced by theP. aeruginosabiofilm was significantly reduced. In comparison with that of 304L SS, the corrosion resistance of 304L-Cu SS in the WZ againstP. aeruginosawas obviously higher.
KeywordCu-bearing stainless steels tungsten inert gas welding microbiologically influenced corrosion confocal laser scanning microscopy pitting corrosion
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; State Key Program of the National Natural Science of China ; Shenzhen Science and Technology Research Fund
DOI10.3389/fmats.2020.00102
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFB0300205] ; National Natural Science Foundation of China[U1906226] ; National Natural Science Foundation of China[51771199] ; State Key Program of the National Natural Science of China[51631009] ; Shenzhen Science and Technology Research Fund[JCYJ20160608153641020]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000543182900001
PublisherFRONTIERS MEDIA SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139496
Collection中国科学院金属研究所
Corresponding AuthorYang, Chunguang
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China
Recommended Citation
GB/T 7714
Yin, Lu,Xi, Tong,Yang, Chunguang,et al. Investigation on Corrosion Resistance of Welded Cu-Bearing 304L Stainless Steel AgainstPseudomonas aeruginosa[J]. FRONTIERS IN MATERIALS,2020,7:11.
APA Yin, Lu.,Xi, Tong.,Yang, Chunguang.,Zhao, Jinlong.,Sun, Yupeng.,...&Yang, Ke.(2020).Investigation on Corrosion Resistance of Welded Cu-Bearing 304L Stainless Steel AgainstPseudomonas aeruginosa.FRONTIERS IN MATERIALS,7,11.
MLA Yin, Lu,et al."Investigation on Corrosion Resistance of Welded Cu-Bearing 304L Stainless Steel AgainstPseudomonas aeruginosa".FRONTIERS IN MATERIALS 7(2020):11.
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