Calculation of Phase Diagrams for the YO1.5—BaO—CuOx System

Abstract
The thermodynamic data for the YO1.5–BaO, BaO‐CuOx, and YO1.5–CuOx quasi‐binary systems were optimized from experimental phase diagrams. They were used to calculate tentative phase diagrams for the YO1.5–BaO—CuOx quasi‐ternary system. The equilibrim liquidus surface and the isothermal sections of the ternary system at 900°, 925°, 950°, 975°, and 1000°C were calculated. The isopleths containing YBa2Cu3O7‐δ were also calculated.