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Insight into atmospheric corrosion evolution of mild steel in a simulated coastal atmosphere
Wang, Yue1,2; Mu, Xin1; Dong, Junhua1; Umoh, Aniefiok Joseph1,2; Ke, Wei3
Corresponding AuthorMu, Xin(xmu@imr.ac.cn) ; Dong, Junhua(jhdong@imr.ac.cn)
2021-06-20
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume76Pages:41-50
AbstractThe corrosion behavior of mild steel in a simulated coastal atmosphere environment has been investigated by the indoor accelerated wet/dry cyclic corrosion acceleration test (CCT), scanning electron microscopy (SEM), Raman spectroscopy and electrochemical measurements. During the CCT test of 60 cycles, the evolution of logarithmic (corrosion rate) vs. logarithmic (CCT cycles) presents a turning point at the 5th cycle, presenting a tendency to increase first and then decrease to gradually stabilize as the CCT cycle prolonged. Before the 5th cycle, gamma-FeOOH and beta-FeOOH and Fe3O4 were detected, respectively. And then, alpha-FeOOH as a new chemical composition was detected in the subsequent corrosion cycles. It is found that, after long term corrosion, the rust separated into a relatively dense inner layer rich with alpha-FeOOH and a loose outer layer rich with gamma-FeOOH, both of which have poor electrical conductivity. The rapid increase of corrosion rate in the early stage since reducible corrosion products are involved in the reduction process of the cathode which promotes the dissolution of the anodic metal substrate. Afterward, as the rust layer thickens, the resistance of the rust increases, and the aggressive ions diffusion is blocked, gradually suppressing the electrochemical corrosion process. At last, when the composition and distribution of the rust layer remain stable, the corrosion presents a fluctuating speed around a certain value during the cracking and self-repairing process of the rust layer. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordMild steel Coastal atmospheric corrosion Raman spectroscopy Rusting evolution EIS
Funding OrganizationNatural ScienceFoundation of Liaoning Province, China ; National Natural Science Foundation of China ; State Key Laboratory of Metal Material for Marine Equipment and Application
DOI10.1016/j.jmst.2020.11.021
Indexed BySCI
Languageen
Funding ProjectNatural ScienceFoundation of Liaoning Province, China[2019JH3/30100037] ; National Natural Science Foundation of China[51671200] ; State Key Laboratory of Metal Material for Marine Equipment and Application[SKLMEA-K201907]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000644511100005
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/161760
Collection中国科学院金属研究所
Corresponding AuthorMu, Xin; Dong, Junhua
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Chinese Acad Sci, Environm Corros Ctr Mat, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Wang, Yue,Mu, Xin,Dong, Junhua,et al. Insight into atmospheric corrosion evolution of mild steel in a simulated coastal atmosphere[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,76:41-50.
APA Wang, Yue,Mu, Xin,Dong, Junhua,Umoh, Aniefiok Joseph,&Ke, Wei.(2021).Insight into atmospheric corrosion evolution of mild steel in a simulated coastal atmosphere.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,76,41-50.
MLA Wang, Yue,et al."Insight into atmospheric corrosion evolution of mild steel in a simulated coastal atmosphere".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 76(2021):41-50.
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