Abstract
Two approaches to the synthesis of nanosized precursor powders 0.5LaPO4·nH2O–0.5ZrO(OH)2 and 0.5LaPO4·nH2O–0.5Y(OH)3 for the fabrication of ceramic composites 0.5LaPO4–0.5ZrO2 and 0.5LaPO4–0.5Y2O3 were used. In the first case, sol-gel synthesis of components (LaPO4·nH2O, ZrO(OH)2 or Y(OH)3) was carried out separately by reverse precipitation technique. In the second case, reverse precipitation was used too but without separate preparation of sols of the components. The results of the synthesis were compared by XRD analysis, thermal behavior of precursor powders by DSC/TG technique, as well as Vickers microhardness values of 0.5LaPO4–0.5ZrO2 and 0.5LaPO4–0.5Y2O3 ceramic composites.
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ACKNOWLEDGMENTS
The authors thank O.Yu. Sinel’shchikova, PhD (Chemistry), a Leading Researcher of the Institute of Silicate Chemistry, Russian Academy of Sciences, for the idea of conducting experiments on the synthesis of precursor powders without separate precipitation of sols.
Funding
The work was performed under the budget program of the Institute of Silicate Chemistry of the Russian Academy of Sciences with the support of the Ministry of Education and Science of the Russian Federation (no. 0081-2022-0008).
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Mezentseva, L.P., Osipov, A.V., Ugolkov, V.L. et al. Comparative Study of the Synthesis of Ceramic Composites Based on Lanthanum Orthophosphate. Glass Phys Chem 49, 379–385 (2023). https://doi.org/10.1134/S1087659623600345
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DOI: https://doi.org/10.1134/S1087659623600345