Vaporization and Thermodynamic Properties of the CeO<sub>2</sub>-TiO<sub>2</sub>-ZrO<sub>2 </sub>System
The evaporation processes of the TiO<sub>2</sub>-CeO<sub>2</sub>-ZrO<sub>2</sub> system were studied by high-temperature mass spectrometry. The values of TiO<sub>2</sub> and CeO<sub>2</sub> activities at a temperature of 2250 K were determined, indicating a positive deviation from the ideal behavior of TiO<sub>2</sub> activity and an increase in the activity coefficient of CeO<sub>2</sub> in comparison with the binary system CeO<sub>2</sub>-ZrO<sub>2</sub>.