CATHODIC ELECTROCHEMICAL BEHAVIORS OF MILD STEEL IN SEAWATER

doi:10.3724/SP.J.1037.2009.00374

IMR OpenIR

	CATHODIC ELECTROCHEMICAL BEHAVIORS OF MILD STEEL IN SEAWATER
	Zou Yan 1; Zheng Yingying 1; Wang Yanhua 1; Wang Jia 1,2
通讯作者	Wang Jia(jwang@ouc.edu.cn)
	2010-01-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	46 期号:1 页码:123-128
摘要	The cathodic electrochemical behavior of A3 mild steel in seawater was studied and the roles of the formed rust layers in cathodic process were analyzed by means of electrochemical tests and XRD. The results showed that the rust formed could be classified into outer layer and inner layer. The inner layer is mainly composed of gamma-FeOOH, alpha-FeOOH, beta-FcOOH and Fe(3)O(4)/gamma-Fe(2)O(3), while the main phases in the outer layer changed with the increase of immersion time. During the initial immersion period of 126 d, the phase is gamma-FeOOH; but after about 364 d immersion, the phases are gamma-FeOOH, alpha-FeOOH and Fe(3)O(4)/gamma-Fe(2)O(3). These rust layers play different roles in the cathodic process. Both the outer and inner rust layers can prevent the dissolved oxygen from diffusing into the steel substrate, while the inner layer could also participate in reduction reaction which accelerated the cathodic reaction. A parameter a was induced to evaluate the participation degree of rust in the reduction reaction. The value of parameter alpha obviously increased during the first 7 d immersion, and almost didn't change after 168 d immersion. Changes of components in outer and inner layers were discussed and the interactions of different components were analyzed.
关键词	mild steel corrosion in seawater rust layer electrochemical impedance spectrum (EIS) polarization curve
资助者	National Natural Science Foundation of China
DOI	10.3724/SP.J.1037.2009.00374
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[50971118]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000274823200020
出版者	SCIENCE PRESS
引用统计	被引频次：6[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/321006/99827
专题	中国科学院金属研究所
通讯作者	Wang Jia
作者单位	1.Ocean Univ China, Coll Chem & Chem Engn, Qingdao 266100, Peoples R China 2.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zou Yan,Zheng Yingying,Wang Yanhua,et al. CATHODIC ELECTROCHEMICAL BEHAVIORS OF MILD STEEL IN SEAWATER[J]. ACTA METALLURGICA SINICA,2010,46(1):123-128.
APA	Zou Yan,Zheng Yingying,Wang Yanhua,&Wang Jia.(2010).CATHODIC ELECTROCHEMICAL BEHAVIORS OF MILD STEEL IN SEAWATER.ACTA METALLURGICA SINICA,46(1),123-128.
MLA	Zou Yan,et al."CATHODIC ELECTROCHEMICAL BEHAVIORS OF MILD STEEL IN SEAWATER".ACTA METALLURGICA SINICA 46.1(2010):123-128.