Abstract
We have studied the influence of cryochemical and ultrasonic processing on the formation, structure, particle size, and thermal decomposition of xerogels in the ZrO2〈Y2O3〉–Al2O3 (20 wt %) system. Nanopowders of tetragonal-zirconia-based solid solutions with a high degree of tetragonality (c/a = 1.4366) have been synthesized. Al2O3 has been shown to slow down t-ZrO2 crystallite growth in the temperature range 600–1400°C. We have optimized nanopowder consolidation conditions, obtained nanoceramics stable to low-temperature “aging” in a humid medium, and investigated their physicochemical and mechanical properties.
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Original Russian Text © L.V. Morozova, M.V. Kalinina, M.Yu. Arsent’ev, O.A. Shilova, 2017, published in Neorganicheskie Materialy, 2017, Vol. 53, No. 6, pp. 654–661.
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Morozova, L.V., Kalinina, M.V., Arsent’ev, M.Y. et al. Influence of cryochemical and ultrasonic processing on the texture and thermal decomposition of xerogels and properties of nanoceramics in the ZrO2〈Y2O3〉–Al2O3 system. Inorg Mater 53, 640–647 (2017). https://doi.org/10.1134/S0020168517060115
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DOI: https://doi.org/10.1134/S0020168517060115