Abstract
Nanosized precursor powders of (1 – x)ZrSiO4‒xZrO(OH)2 are synthesized by the sol-gel method with the separate precipitation of components to obtain (1 – x)ZrSiO4‒xZrO2 ceramic composites. The thermal behavior of precursor powders is studied by differential scanning calorimetry and thermogravimetry (DSC/TG). Ceramic composites with a high level of microhardness are obtained by sintering powders, preliminarily calcined at 850°C, in air in the temperature range 1000‒1300°C. In the future, such ceramic composites can be used as matrices for solidification and isolating high-level waste (HLW).
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This study was supported by the Russian Science Foundation, grant no. 23-23-00378 (https://rscf.ru/project/23-23-00378/).
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Ugolkov, V.L., Koval’chuk, N.A., Osipov, A.V. et al. Sol-Gel Synthesis of Nanosized Powders and Obtaining Ceramic Composites Based on Zircon and Zirconium Oxide. Glass Phys Chem 49, 503–509 (2023). https://doi.org/10.1134/S1087659623600540
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DOI: https://doi.org/10.1134/S1087659623600540