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The experimental work on the ZrO2-YO1. 5-CeO2 system, its limiting quasi-binaries and previous thermodynamic assessments are reviewed and evaluated. Isothermal sections of ZrO2-YO1.5-CeO2 system in the temperature region between 1450 and 1800℃ are estimated according to the substitutional model using the Bonnier equation. The CSS+YSS two-phase region of the calculated isothermal section at 1700℃ was found to be in good agreement with the experimentally obtained ternary diagram of Longo and Podda. The phase composition in the ZrO2-rich corner however disagreed significantly.
The experimental work on the ZrO2-YO1. 5-CeO2 system, its limiting quasi-binaries and previous previous thermodynamic assessments are reviewed and. Isothermal sections of ZrO2-YO1.5-CeO2 system in the temperature region between 1450 and 1800 ° C are estimated The CSS + YSS two-phase region of the calculated isothermal section at 1700 ° C was found to be in good agreement with the experimentally obtained ternary diagram of Longo and Podda. The phase composition in the ZrO2 -rich corner however disagreed significantly.