Experimental Investigation and Thermodynamic Assessment of the Nd2O3–Y2O3 System |
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Authors: | Shuigen Huang Omer Van der Biest Jef Vleugels Lin Li |
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Affiliation: | Department of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven, Kasteelpark Arenberg 44, B-3001 Heverlee, Belgium; School of Material Science and Engineering, Shanghai University, Shanghai 200072, China |
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Abstract: | The phase relations in the Nd2O3–Y2O3 system were experimentally studied in the 1300°–1600°C range. X-ray diffraction, scanning electron microscopy, and electron probe microanalysis were applied to analyze the phase composition of annealed Nd2O3–Y2O3 mixtures with varying Y2O3 content. A thermodynamic assessment was conducted using the experimental data obtained. The excess Gibbs energies of the solution phases were described based on a simple substitutional solution model. A consistent set of optimized interaction parameters was derived for the Gibbs energy of the constituent phases, resulting in a good match between calculated and experimental data. |
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