In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1: Corrosion in water vapour

Uranium encapsulated in grout was exposed to water vapour for extended periods of time. Through synchrotron x-ray powder diffraction and tomography measurements, uranium dioxide was determined the dominant corrosion product over a 50-week time period. The oxide growth rate initiated rapidly, with ra...

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Autores principales: Stitt, C. A., Paraskevoulakos, C., Banos, A., Harker, N. J., Hallam, K. R., Davenport, A., Street, S., Scott, T. B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5554164/
https://www.ncbi.nlm.nih.gov/pubmed/28801638
http://dx.doi.org/10.1038/s41598-017-08601-x
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author Stitt, C. A.
Paraskevoulakos, C.
Banos, A.
Harker, N. J.
Hallam, K. R.
Davenport, A.
Street, S.
Scott, T. B.
author_facet Stitt, C. A.
Paraskevoulakos, C.
Banos, A.
Harker, N. J.
Hallam, K. R.
Davenport, A.
Street, S.
Scott, T. B.
author_sort Stitt, C. A.
collection PubMed
description Uranium encapsulated in grout was exposed to water vapour for extended periods of time. Through synchrotron x-ray powder diffraction and tomography measurements, uranium dioxide was determined the dominant corrosion product over a 50-week time period. The oxide growth rate initiated rapidly, with rates comparable to the U + H(2)O reaction. Over time, the reaction rate decreased and eventually plateaued to a rate similar to the U + H(2)O + O(2) reaction. This behaviour was not attributed to oxygen ingress, but instead the decreasing permeability of the grout, limiting oxidising species access to the metal surface.
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spelling pubmed-55541642017-08-15 In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1: Corrosion in water vapour Stitt, C. A. Paraskevoulakos, C. Banos, A. Harker, N. J. Hallam, K. R. Davenport, A. Street, S. Scott, T. B. Sci Rep Article Uranium encapsulated in grout was exposed to water vapour for extended periods of time. Through synchrotron x-ray powder diffraction and tomography measurements, uranium dioxide was determined the dominant corrosion product over a 50-week time period. The oxide growth rate initiated rapidly, with rates comparable to the U + H(2)O reaction. Over time, the reaction rate decreased and eventually plateaued to a rate similar to the U + H(2)O + O(2) reaction. This behaviour was not attributed to oxygen ingress, but instead the decreasing permeability of the grout, limiting oxidising species access to the metal surface. Nature Publishing Group UK 2017-08-11 /pmc/articles/PMC5554164/ /pubmed/28801638 http://dx.doi.org/10.1038/s41598-017-08601-x Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Stitt, C. A.
Paraskevoulakos, C.
Banos, A.
Harker, N. J.
Hallam, K. R.
Davenport, A.
Street, S.
Scott, T. B.
In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1: Corrosion in water vapour
title In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1: Corrosion in water vapour
title_full In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1: Corrosion in water vapour
title_fullStr In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1: Corrosion in water vapour
title_full_unstemmed In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1: Corrosion in water vapour
title_short In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1: Corrosion in water vapour
title_sort in-situ, time resolved monitoring of uranium in bfs:opc grout. part 1: corrosion in water vapour
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5554164/
https://www.ncbi.nlm.nih.gov/pubmed/28801638
http://dx.doi.org/10.1038/s41598-017-08601-x
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