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Spark Plasma Sintering of Ceramic Materials Based on Rare-Earth Zirconates

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Refractories and Industrial Ceramics Aims and scope

Powders of rare-earth (RE) zirconates La2Zr2O7 and ZrO2 – 8Y2O3 were synthesized by reverse chemical precipitation to obtain ceramic materials based on them by spark-plasma sintering. Formation of the ceramic phase composition during consolidation by spark-plasma sintering was studied. The thermal conductivity of ceramics based on RE zirconates at 400°C was 1.79 W/(m·K), which was less than those of La2Zr2O7 [2.06 W/(m·K)] and ZrO2 – 8Y2O3 [2.4 W/(m·K)]. Use of RE oxide concentrate was shown to be promising for obtaining a ceramic layer of thermal barrier coatings with thermal stability at temperatures above 1200°C.

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Authors and Affiliations

  1. Perm National Research Polytechnic University, Perm, Russia

    S. A. Oglezneva, S. E. Porozova, M. N. Kachenyuk, V. B. Kul’met’eva & A. A. Smetkin

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  1. S. A. Oglezneva
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  2. S. E. Porozova
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  3. M. N. Kachenyuk
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  4. V. B. Kul’met’eva
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Correspondence to V. B. Kul’met’eva.

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Translated from Novye Ogneupory, No. 12, pp. 35 – 40, December, 2022.

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Oglezneva, S.A., Porozova, S.E., Kachenyuk, M.N. et al. Spark Plasma Sintering of Ceramic Materials Based on Rare-Earth Zirconates. Refract Ind Ceram 63, 659–664 (2023). https://doi.org/10.1007/s11148-023-00787-0

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