Abstract
The effect of complex additives based on cobalt, iron, and manganese oxides and sodium silicate on the phase composition, microstructure, mechanical properties, and sintering of tetragonal zirconia ceramics stabilized with 3 mol % yttria and containing 10 wt % alumina (3Y–TZP–10Al2O3) was studied. The introduction of complex additives significantly affected sintering of the ceramics: the open porosity was less than 1% after annealing at 1250°C. The use of Na2Si2O5–0.33% Mn as a sintering additive provided the minimum of porosity for sintering temperature of 1300°C. Ceramics with flexural strength of 500 ± 16 MPa and the microhardness of 10 GPa was obtained.
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This work was supported by the Russian Foundation for Basic Research (grant no. 18-29-11053 mk).
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This paper is based on the results of the Sixth Interdisciplinary Scientific Forum with International Participation “New Materials and Advanced Technologies”, Moscow, November 23–26, 2020, http://n-materials.ru.
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Translated by Z. Svitanko
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Obolkina, T.O., Goldberg, M.A., Antonova, O.S. et al. Effect of Complex Additives Based on Iron, Cobalt, and Manganese Oxides and Sodium Silicate on the Sintering and Properties of Low-Temperature Ceramics 3Y–TZP–Al2O3. Russ. J. Inorg. Chem. 66, 1223–1228 (2021). https://doi.org/10.1134/S0036023621080192
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DOI: https://doi.org/10.1134/S0036023621080192