Long term corrosion estimation of carbon steel, titanium and its alloy in backfill material of compacted bentonite for nuclear waste repository

doi:10.1038/s41598-019-39751-9

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	Long term corrosion estimation of carbon steel, titanium and its alloy in backfill material of compacted bentonite for nuclear waste repository
	Zhang, Qichao 1,2,6; Zheng, Min1,2 ; Huang, Yanliang 1,6; Kunte, Hans Joerg 3; Wang, Xiutong 1,6; Liu, Yuemiao 4; Zheng, Chuanbo 5
刊名	SCIENTIFIC REPORTS
	2019-03-01
卷号	9 页码:18
ISSN号	2045-2322
DOI	10.1038/s41598-019-39751-9
通讯作者	Huang, Yanliang(hyl@qdio.ac.cn)
英文摘要	The container of high-level radioactive waste (HLRW) being in deep geological disposal, the backfill material is needed to serve as the second defense for HLRW and the highly compacted bentonite is generally selected. As the time goes, the underground water will infiltrate the backfill, causing the corrosion of materials for the building of containers in the formed electrolyte. Carbon steel, titanium and its alloy are the potential candidate materials for the fabrication of HLRW containers. The current investigation aims at assessing the safety of HLRW container in deep geological disposal for hundreds of thousands of years and facilitating the material selection for future container fabrication by estimating their corrosion behavior in compacted bentonite with a series of moisture content at different temperatures through electrochemical methods including open circuit potential (OCP), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization curve (PC) measurements. The corrosion rates were estimated for a carbon steel, a pure titanium and a titanium alloy in compacted Gaomiaozi Bentonite infiltrated with simulated underground water in Beishan area of China over an expected disposal period up to 10(6) years respectively, showing that titanium and its alloy are more reliable materials for building HLRW containers than carbon steel.
资助项目	National Natural Science Foundation of China[51471160]
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000459983900001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/155238]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者	Huang, Yanliang
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Bundesanstalt Mat Forsch & Prufung, D-12205 Berlin, Germany 4.Beijing Res Inst Uranium Geol, Beijing 100029, Peoples R China 5.Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Jiangsu, Peoples R China 6.Qingdao Natl Lab Marine Sci & Technol, Open Studio Marine Corros & Protect, Qingdao 266237, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Qichao,Zheng, Min,Huang, Yanliang,et al. Long term corrosion estimation of carbon steel, titanium and its alloy in backfill material of compacted bentonite for nuclear waste repository[J]. SCIENTIFIC REPORTS,2019,9:18.
APA	Zhang, Qichao.,Zheng, Min.,Huang, Yanliang.,Kunte, Hans Joerg.,Wang, Xiutong.,...&Zheng, Chuanbo.(2019).Long term corrosion estimation of carbon steel, titanium and its alloy in backfill material of compacted bentonite for nuclear waste repository.SCIENTIFIC REPORTS,9,18.
MLA	Zhang, Qichao,et al."Long term corrosion estimation of carbon steel, titanium and its alloy in backfill material of compacted bentonite for nuclear waste repository".SCIENTIFIC REPORTS 9(2019):18.