High-temperature mass spectrometric study of the vaporization processes and thermodynamic properties in the Gd2O3-Y2O3-HfO2 system

摘要

RATIONALE: The refractory properties of the Gd2O3-Y2O3-HfO2 system are considered promising for the production of many high-temperature materials, e.g., thermal barrier coatings and casting molds for gas turbine engine blades. At high temperatures, components of the Gd2O3-Y2O3-HfO2 system may vaporize selectively and this may significantly change the physicochemical properties of the materials. Therefore, information on vaporization processes and thermodynamic properties of the Gd2O3-Y2O3-HfO2 system is of great importance.