Corrosion Behaivour of X65 Low Carbon Steel During Redox State Transition Process of High Level Nuclear Waste Disposal

doi:10.11900/0412.1961.2018.00481

IMR OpenIR

	Corrosion Behaivour of X65 Low Carbon Steel During Redox State Transition Process of High Level Nuclear Waste Disposal
	Liu Canshuai 1,2; Tian Zhaohui 2; Zhang Zhiming 1; Wang Jianqiu 1; Han En-Hou 1
通讯作者	Wang Jianqiu(wangjianqiu@imr.ac.cn)
	2019-07-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	55 期号:7 页码:849-858
摘要	Domestic and foreign researches on the corrosion behavior of low carbon steel canister in high level nuclear waste geological repositories focus on the initial aerobic stage and the later anaerobic stage, while few researches have been reported on the corrosion behavior during the disposal transition period. The long term electrochemical corrosion behavior of X65 low carbon steel in 80 degrees C Gaomiaozi bentonite saturated with anaerobic Beishan groundwater has been studied by electrochemical measurement system in anaerobic glovebox constructed independently. The results indicated that the open circuit potential of X65 low carbon steel decreased gradually during 150 d, while the electrochemical impedance of the corrosion film increased with immersion time. Pitting corrosion occurred at the beginning of immersion tests, and finally transformed into general corrosion. Morphologies, compositions, and phases of the corrosion film formed on the carbon steel surface were examined by SEM, EDS and mu-XRD. The results showed that the corrosion film was mainly composed of blocks, slices, rods and swellings. The elemental distribution in the corrosion film was uniform, and the phases were composed of magnetite and hematite. The average corrosion rates were detected by weight loss measurement, which decreased from 195.88 mu m/a to 20.58 mu m/a. The corrosion rates (V) followed a power function pattern V=8.34t(-0.88), indicating that the film growth process was controlled by oxygen diffusion.
关键词	geological dispodal low carbon steel corrosion electrochemical disffusion
资助者	Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Program of the Chinese Academy of Sciences
DOI	10.11900/0412.1961.2018.00481
收录类别	SCI
语种	英语
资助项目	Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDY-SSWJSC012] ; Key Program of the Chinese Academy of Sciences[ZDRW-CN-2017-1]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000471268000005
出版者	SCIENCE PRESS
引用统计	被引频次：3[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/321006/134203
专题	中国科学院金属研究所
通讯作者	Wang Jianqiu
作者单位	1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China 2.Suzhou Nucl Power Res Inst Co Ltd, Suzhou 215008, Peoples R China
推荐引用方式 GB/T 7714	Liu Canshuai,Tian Zhaohui,Zhang Zhiming,et al. Corrosion Behaivour of X65 Low Carbon Steel During Redox State Transition Process of High Level Nuclear Waste Disposal[J]. ACTA METALLURGICA SINICA,2019,55(7):849-858.
APA	Liu Canshuai,Tian Zhaohui,Zhang Zhiming,Wang Jianqiu,&Han En-Hou.(2019).Corrosion Behaivour of X65 Low Carbon Steel During Redox State Transition Process of High Level Nuclear Waste Disposal.ACTA METALLURGICA SINICA,55(7),849-858.
MLA	Liu Canshuai,et al."Corrosion Behaivour of X65 Low Carbon Steel During Redox State Transition Process of High Level Nuclear Waste Disposal".ACTA METALLURGICA SINICA 55.7(2019):849-858.