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Optimization of Sol-Gel Conditions for Producing Zirconium Dioxide Nanopowders

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Refractories and Industrial Ceramics Aims and scope

Six variants of direct and reverse coprecipitation of a mixture of salts by an aqueous solution of ammonia or an ammonia buffer solution with pH 9.5 are considered to optimize the technological scheme for the synthesis of zirconium dioxide nanopowders stabilized with 2.5 mol.% yttrium oxide. The influence of the storage time of the mixture of salt solutions before precipitation on the phase and chemical composition, apparent density, and open porosity of sintered specimens was investigated. The best results were obtained using reverse precipitation with an ammonia buffer as precipitant.

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The results were obtained during work on a State Task for the Ministry of Science and Higher Education of the RF (Project No. FSNM-2020-0026).

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Correspondence to S. E. Porozova.

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Translated from Novye Ogneupory, No. 11, pp. 38 – 43, November, 2020.

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Porozova, S.E., Rogozhnikov, A.G., Shokov, V.O. et al. Optimization of Sol-Gel Conditions for Producing Zirconium Dioxide Nanopowders. Refract Ind Ceram 61, 659–664 (2021). https://doi.org/10.1007/s11148-021-00538-z

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  • DOI: https://doi.org/10.1007/s11148-021-00538-z

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