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Effect of Asymmetric Epoxy Coating/Metal Electrodes on the Electrochemical Noise Measurements Under Marine Alternating Hydrostatic Pressure
Meng, Fandi1; Liu, Yushan1; Liu, Li1; Cui, Yu2; Wang, Fuhui1,2
Corresponding AuthorLiu, Li(liuli@mail.neu.edu.cn)
2019-12-01
Source PublicationCOATINGS
Volume9Issue:12Pages:13
AbstractElectrochemical noise (EN) is expected to be an in-situ evaluation method for coating performance in the real deep-ocean environment. The asymmetric factors of working electrodes (WEs) in EN configuration, including coating area, coating thickness, and coating impedance, were considered under marine alternating hydrostatic pressure (AHP) condition. The effect of WE asymmetry was discussed mainly by EN time records, wavelet analysis and shot noise method. The results indicated that coating impedance is the most important factor, and the coating with higher impedance contributes more to current noise in a pair of electrodes. The reason of asymmetry influence on EN measurements is mainly by the variation of average charge of current sources but not the current source frequency during the initial period of coating failure process. When the obvious corrosion of metal substrate happens, the corresponding EN proportion relationship between coating/metal WEs may be not exist.
Keywordepoxy coating electrochemical noise asymmetric electrode shot noise analysis wavelet analysis alternating hydrostatic pressure
Funding OrganizationNational Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Science Foundation
DOI10.3390/coatings9120852
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51622106] ; Fundamental Research Funds for the Central Universities[N170203005] ; China Postdoctoral Science Foundation[2018M640256]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Coatings & Films
WOS IDWOS:000506682800080
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/136726
Collection中国科学院金属研究所
Corresponding AuthorLiu, Li
Affiliation1.Northeastern Univ, Shenyang Natl Lab Mat Sci, Wenhua Rd 3-11, Shenyang 110819, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Wencui Rd 62, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Meng, Fandi,Liu, Yushan,Liu, Li,et al. Effect of Asymmetric Epoxy Coating/Metal Electrodes on the Electrochemical Noise Measurements Under Marine Alternating Hydrostatic Pressure[J]. COATINGS,2019,9(12):13.
APA Meng, Fandi,Liu, Yushan,Liu, Li,Cui, Yu,&Wang, Fuhui.(2019).Effect of Asymmetric Epoxy Coating/Metal Electrodes on the Electrochemical Noise Measurements Under Marine Alternating Hydrostatic Pressure.COATINGS,9(12),13.
MLA Meng, Fandi,et al."Effect of Asymmetric Epoxy Coating/Metal Electrodes on the Electrochemical Noise Measurements Under Marine Alternating Hydrostatic Pressure".COATINGS 9.12(2019):13.
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