IOCAS-IR  > 海洋环境腐蚀与与生物污损重点实验室
Long term corrosion estimation of carbon steel, titanium and its alloy in backfill material of compacted bentonite for nuclear waste repository
Zhang, Qichao1,2,6; Zheng, Min1,2; Huang, Yanliang1,6; Kunte, Hans Joerg3; Wang, Xiutong1,6; Liu, Yuemiao4; Zheng, Chuanbo5
2019-03-01
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume9Pages:18
Corresponding AuthorHuang, Yanliang(hyl@qdio.ac.cn)
AbstractThe 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.
DOI10.1038/s41598-019-39751-9
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51471160]
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000459983900001
PublisherNATURE PUBLISHING GROUP
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/155239
Collection海洋环境腐蚀与与生物污损重点实验室
Corresponding AuthorHuang, Yanliang
Affiliation1.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
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
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.
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