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Sintering and Properties of ZrO2–Al2O3 Composites with Additives Forming Melts Based on Sodium Silicate

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Inorganic Materials: Applied Research Aims and scope

Abstract

A wide range of compositions of zirconia-based composites containing 0, 5, 10, 20 wt % alumina was studied. The dependences of the formation of microstructure and phase composition on the sintering temperature were established. It was shown that the introduction of additives forming low-temperature melts based on sodium silicates, Na2SiO3 and Na2Si2O5, led to a decrease in sintering temperature by 150–200°C. As a result, dense nanocrystalline materials with a crystal size of 50–200 nm, strength of up to 500 MPa, and sintering temperature of 1300–1400°C were obtained.

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Funding

This work was financially supported by the Russian Foundation for Basic Research, grant no. 18-29-11053 mk.

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Authors and Affiliations

  1. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119334, Moscow, Russia

    V. V. Smirnov, S. V. Smirnov, T. O. Obolkina, O. S. Antonova, M. A. Goldberg, D. R. Khairutdinova & S. M. Barinov

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  1. V. V. Smirnov
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  2. S. V. Smirnov
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  3. T. O. Obolkina
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  4. O. S. Antonova
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  5. M. A. Goldberg
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  6. D. R. Khairutdinova
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  7. S. M. Barinov
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Correspondence to V. V. Smirnov.

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Translated by A. Bannov

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Smirnov, V.V., Smirnov, S.V., Obolkina, T.O. et al. Sintering and Properties of ZrO2–Al2O3 Composites with Additives Forming Melts Based on Sodium Silicate. Inorg. Mater. Appl. Res. 11, 154–159 (2020). https://doi.org/10.1134/S2075113320010359

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  • DOI: https://doi.org/10.1134/S2075113320010359

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