In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1: Corrosion in water vapour
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Published version
Author(s)
Type
Journal Article
Abstract
Uranium encapsulated in grout was exposed to water vapour for extended periods of time. Through
synchrotron x-ray powder difraction 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+H2O reaction. Over time, the reaction rate decreased and eventually
plateaued to a rate similar to the U+H2O+O2 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.
synchrotron x-ray powder difraction 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+H2O reaction. Over time, the reaction rate decreased and eventually
plateaued to a rate similar to the U+H2O+O2 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.
Date Issued
2017-08-11
Date Acceptance
2017-07-14
Citation
Scientific Reports, 2017, 7
ISSN
2045-2322
Publisher
Nature Publishing Group
Journal / Book Title
Scientific Reports
Volume
7
Copyright Statement
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
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Commons license, and indicate if changes were made. Te 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/.
© The Author(s) 2017
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. Te 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/.
© The Author(s) 2017
License URL
Subjects
Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
RAY PHOTOELECTRON-SPECTROSCOPY
OXIDATION
OXYGEN
TEMPERATURES
KINETICS
DIOXIDE
CEMENT
MECHANISMS
MIXTURES
PHASES
Publication Status
Published
Article Number
7999
Date Publish Online
2017-08-11