Undetected perovskite phase interference with zirconolite dissolution measurements
Thomas L. Goût; Anamul H. Mir; Simon M. Fairclough; Dimitri Pletser; Ian Farnan · 2024 · npj Materials Degradation
WASTE classifies this as Negative / Null Result Report · AI classification, approximate
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Abstract
Abstract Zirconolite ceramics present a chemically durable host matrix for waste actinides, but zirconolite dissolution rates reported in the literature often vary significantly. Here, the release of Ca and Al from a hot isostatically pressed zirconolite (Ca0.8Zr0.9Ce0.3Ti1.6Al0.4O7.0) was shown to be predominantly driven by preferential dissolution of minor perovskite and alumina phases. Both phases were undetectable by XRD, and the perovskite was difficult to detect by SEM-EDS. Whilst the zirconolite phase exhibited no signs of alteration, dissolution of the perovskite proceeded congruently
Abstract by Thomas L. Goût; Anamul H. Mir; Simon M. Fairclough; Dimitri Pletser; Ian Farnan, npj Materials Degradation (2024) — licensed CC BY 4.0.
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Metadata source: DOAJ · DOI 10.1038/s41529-024-00475-5