Fisher, A.J., Harrison, M.T., Hyatt, N.C. et al. (2 more authors) (2020) The dissolution of simulant UK Ca/Zn-modified nuclear waste glass : insight into Stage III behavior. MRS Advances, 5 (3-4). pp. 103-109. ISSN 2059-8521
Abstract
The dissolution of the United Kingdom’s vitrified high-level-waste simulant, CaZn MW28, was investigated following the Product Consistency Test-B protocol for 112 d at 90 °C and in ultra-high-quality water. Residual rate dissolution (stage II) and rate resumption (stage III), after 28 d, was observed. Thermodynamic modelling suggested that solutions were saturated with respect to Mg- and Zn-bearing phases, and the presence of Mg- and Zn-smectite clays was tentatively observed. The formation of these phases was concurrent with a significant increase in the dissolution rate, similar to Stage III behavior seen in other nuclear waste simulant glass materials, indicating that the addition of Mg and Zn to high-level-waste glass (7.3 wt. % combined) significantly influences the dissolution rate.
Metadata
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Copyright, Publisher and Additional Information: | © 2020 Materials Research Society. This is an author-produced version of a paper subsequently published in MRS Advances. Article available under the terms of the CC-BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/). | ||||
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Institution: | The University of Sheffield | ||||
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) | ||||
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Depositing User: | Symplectic Sheffield | ||||
Date Deposited: | 30 Mar 2020 13:43 | ||||
Last Modified: | 27 Jan 2021 01:39 | ||||
Status: | Published | ||||
Publisher: | Cambridge University Press (CUP) | ||||
Refereed: | Yes | ||||
Identification Number: | https://doi.org/10.1557/adv.2020.50 |