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Zhang Q, Zheng M, Huang Y, et al. Long term corrosion estimation of carbon steel, titanium and its alloy in backfill material of compacted bentonite for nuclear waste repository. Sci Rep. 2019;9(1):3195doi: 10.1038/s41598-019-39751-9.
Zhang, Q., Zheng, M., Huang, Y., Kunte, H. J., Wang, X., Liu, Y., & Zheng, C. (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(1), 3195. https://doi.org/10.1038/s41598-019-39751-9
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 vol. 9,1 (2019): 3195. doi: https://doi.org/10.1038/s41598-019-39751-9
Zhang Q, Zheng M, Huang Y, Kunte HJ, Wang X, Liu Y, Zheng C. Long term corrosion estimation of carbon steel, titanium and its alloy in backfill material of compacted bentonite for nuclear waste repository. Sci Rep. 2019 Mar 01;9(1):3195. doi: 10.1038/s41598-019-39751-9. PMID: 30824747; PMCID: PMC6397154.
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Sci Rep. 2019 Mar 01;9(1):3195. doi: 10.1038/s41598-019-39751-9.

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

Scientific reports

Qichao Zhang, Min Zheng, Yanliang Huang, Hans Joerg Kunte, Xiutong Wang, Yuemiao Liu, Chuanbo Zheng

Affiliations

  1. Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.
  2. University of Chinese Academy of Sciences, Beijing, 100049, China.
  3. Open Studio for Marine Corrosion and Protection, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China.
  4. Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China. [email protected].
  5. Open Studio for Marine Corrosion and Protection, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China. [email protected].
  6. Bundesanstalt für Materialforschung und -prüfung, Berlin, 12205, Germany.
  7. Beijing Research Institute of Uranium Geology, Beijing, 100029, China.
  8. School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China.

PMID: 30824747 PMCID: PMC6397154 DOI: 10.1038/s41598-019-39751-9

Abstract

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

References

  1. Sci Rep. 2016 Jan 28;6:19915 - PubMed
  2. J Hazard Mater. 2019 Mar 5;365:306-311 - PubMed

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