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Experimental Investigation and Thermodynamic Assessment of the Nd 2 O 3 –Y 2 O 3 System
Author(s) -
Huang Shuigen,
Van der Biest Omer,
Vleugels Jef,
Li Lin
Publication year - 2006
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2006.01072.x
Subject(s) - gibbs free energy , diffraction , microanalysis , phase (matter) , analytical chemistry (journal) , electron probe microanalysis , phase diagram , chemistry , thermodynamics , materials science , mineralogy , electron microprobe , physics , optics , organic chemistry , chromatography
The phase relations in the Nd 2 O 3 –Y 2 O 3 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 Nd 2 O 3 –Y 2 O 3 mixtures with varying Y 2 O 3 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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