Insight into atmospheric corrosion evolution of mild steel in a simulated coastal atmosphere

doi:10.1016/j.jmst.2020.11.021

IMR OpenIR

	Insight into atmospheric corrosion evolution of mild steel in a simulated coastal atmosphere
	Wang, Yue 1,2; Mu, Xin 1; Dong, Junhua 1; Umoh, Aniefiok Joseph 1,2; Ke, Wei 3
通讯作者	Mu, Xin(xmu@imr.ac.cn) ; Dong, Junhua(jhdong@imr.ac.cn)
	2021-06-20
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	76 页码:41-50
摘要	The 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.
关键词	Mild steel Coastal atmospheric corrosion Raman spectroscopy Rusting evolution EIS
资助者	Natural ScienceFoundation of Liaoning Province, China ; National Natural Science Foundation of China ; State Key Laboratory of Metal Material for Marine Equipment and Application
DOI	10.1016/j.jmst.2020.11.021
收录类别	SCI
语种	英语
资助项目	Natural 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研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000644511100005
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：47[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/161760
专题	中国科学院金属研究所
通讯作者	Mu, Xin; Dong, Junhua
作者单位	1.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
推荐引用方式 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.