A Study on the Initial Corrosion Behavior of Carbon Steel Exposed to a Simulated Coastal-Industrial Atmosphere

doi:10.11900/0412.1961.2017.00142

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	A Study on the Initial Corrosion Behavior of Carbon Steel Exposed to a Simulated Coastal-Industrial Atmosphere
	Guo Mingxiao 1,2; Pan Chen 1; Wang Zhenyao 1; Han Wei 1
刊名	ACTA METALLURGICA SINICA
	2018-01-11
卷号	54 期号:1 页码:65-75
关键词	carbon steel atmospheric corrosion synergism
ISSN号	0412-1961
DOI	10.11900/0412.1961.2017.00142
通讯作者	Pan Chen(cpan@imr.ac.cn)
英文摘要	Carbon steels as common structural material have been widely used for basic facilities with the development of the city. In these service environments, carbon steel would inevitably encounter the atmospheric corrosion. Especially, the corrosion of carbon steels exposed to coastal-industrial atmosphere is very outstanding. However, the initial corrosion mechanism of carbon steel subjected to coastalindustrial environment still need to be clarified, which would be vital for predicating the subsequent corrosion process. In addition, although many scholars studied the synergism of SO2 and Cl, which obviously accelerates the corrosion of steel and reduces its service life, there is few research about the effect of the synergism of SO2 and Cl (in different proportion) on the early corrosion behavior of the carbon steel. Therefore, it is of great importance to investigate the initial corrosion mechanism of carbon steel and the effect of the synergism of SO2 and Cl (in different proportion) in the coastal-industrial atmosphere. In present work, the initial corrosion behavior of Q235 carbon steel exposed to a simulated coastal-industrial atmosphere has been studied by weight loss, XRD, SEM and electrochemical measurements. Also, the effect of the synergism of SO2 and Cl (in different proportion) on the early corrosion behavior of Q235 car-bon steel has been investigated. The results indicate that the initial corrosion behavior of carbon steel exposed to a simulated coastal-industrial atmosphere presented a transition from corrosion acceleration to deceleration, and the kinetics of accelerated corrosion process followed the empirical equation D= Atn. A double-layered corrosion product was formed on the surface of carbon steel after 24 h: the loose outer layer and relative dense inner layer; the synergistic effect between SO2 and Cl accelerated the corrosion of carbon steel. However, the change in the ratio of SO2 and Cl had no significant effect on the corrosion loss of carbon steel, and had not changed the composition of corrosion products formed on carbon steel surface. SO2 caused the corrosion morphology of carbon steel to tend to uniform corrosion.
资助项目	National Natural Science Foundation of China[51601199] ; National Natural Science Foundation of China[51671197] ; National Natural Science Foundation of China[51401222]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000418584100008
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/127152]
专题	金属研究所_中国科学院金属研究所
通讯作者	Pan Chen
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Guo Mingxiao,Pan Chen,Wang Zhenyao,et al. A Study on the Initial Corrosion Behavior of Carbon Steel Exposed to a Simulated Coastal-Industrial Atmosphere[J]. ACTA METALLURGICA SINICA,2018,54(1):65-75.
APA	Guo Mingxiao,Pan Chen,Wang Zhenyao,&Han Wei.(2018).A Study on the Initial Corrosion Behavior of Carbon Steel Exposed to a Simulated Coastal-Industrial Atmosphere.ACTA METALLURGICA SINICA,54(1),65-75.
MLA	Guo Mingxiao,et al."A Study on the Initial Corrosion Behavior of Carbon Steel Exposed to a Simulated Coastal-Industrial Atmosphere".ACTA METALLURGICA SINICA 54.1(2018):65-75.