Abstract
AbstractA combined experimental investigation and thermodynamic assessment was performed for the BaO‐CaO‐Al2O3 system. By using a high‐temperature equilibration/quenching technique and scanning electron microscopy, electron probe microanalysis, and X‐ray powder diffraction analysis, the phase equilibria at 1500°C and phase stability of BaCa2Al8O15 phase were determined. An extensive literature survey was conducted for the experimental and thermodynamic modeling data of the BaO‐CaO‐Al2O3 system. According to the literature data and the present measurements, a thermodynamic assessment was made in order to obtain a set of self‐consistent thermodynamic parameters to describe the BaO‐CaO‐Al2O3 system. Based on the thermodynamic parameters acquired in this work, isothermal sections at 1100°C, 1250°C, 1400°C, 1475°C, and 1500°C and the BaO·Al2O3‐CaO·Al2O3 and BaO·6Al2O3‐CaO·6Al2O3 joints were calculated and compared with the available experimental data.
Published Version
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