Phase formation is studied in ceramic precursors of final composition 9CaO–91ZrO2 with temperature, prepared by two different methods, i.e., a mechanical ceramic method and sol-gel synthesis followed by lyophilic drying. It is shown that sol-gel synthesis followed by lyophilic drying is preferable to the synthesis method used normally. Phase formation with temperature occurs in accordance with an empirical Ostwald rule of stages. Use of sol-gel synthesis facilitates formation of metastable fluorite-like solid solution at a temperature lower than that following from the CaO–ZrO2 phase equilibrium diagram.
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Here and subsequently composition is indicated in mol.%.
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Translated from Novye Ogneupory, No. 4, pp. 47 – 52, April, 2014.
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Kurapova, O.Y., Konakov, V.G., Golubev, S.N. et al. Correlation of Synthesis Procedure, Phase Formation, and Fineness of Precursor Ceramic Powders of Final Ceramic Composition 9cao–91zro2 . Refract Ind Ceram 55, 151–156 (2014). https://doi.org/10.1007/s11148-014-9679-y
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DOI: https://doi.org/10.1007/s11148-014-9679-y