Sol-Gel Synthesis of Nanosized Powders and Obtaining Ceramic Composites Based on Zircon and Zirconium Oxide

V. L. Ugolkov; Уголков В. Л.; N. A. Koval’chuk; Ковальчук Н. А.; A. V. Osipov; Осипов А. В.; L. P. Mezentseva; Мезенцева Л. П.

doi:10.31857/S0132665123600188

Sol-Gel Synthesis of Nanosized Powders and Obtaining Ceramic Composites Based on Zircon and Zirconium Oxide

Authors: Ugolkov V.L.¹, Koval’chuk N.A.¹, Osipov A.V.¹, Mezentseva L.P.¹
Affiliations:
1. Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences, 199034, St. Petersburg, Russia
Issue: Vol 49, No 5 (2023)
Pages: 522-531
Section: Articles
URL: https://journals.rcsi.science/0132-6651/article/view/139339
DOI: https://doi.org/10.31857/S0132665123600188
EDN: https://elibrary.ru/OMJMPY
ID: 139339

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Abstract
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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).

Keywords

sol-gel synthesis, (1 – x)ZrSiO4‒xZrO2 ceramic composites, thermal analysis, Vickers microhardness

References

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