Thermodynamic assessment of the Y2O3-Al2O3-SiO2 system and its subsystems
2008 (English)In: Calphad, ISSN 0364-5916, E-ISSN 1873-2984, Vol. 32, no 2, 399-412 p.Article in journal (Refereed) Published
Phase equilibria and thermodynamic properties at I bar in the Y2O3-Al2O3-SiO2 ternary system and its constituent binaries Y2O3-Al2O3 and Y2O3-SiO2 have been reevaluated using the CALPHAD approach. The liquid phase is described by the ionic two-sublattice model with the formula (Al+3, Y+3)(p)(AlO2-1, O-2, SiO4-4, SiO4-4, SiO20)(Q). The SiO2 solubility in the YAM phase was described using a Compound energy model. Two clatasets of self-consistent model parameters are presented. However, the rather meagre and scattered experimental data imply that the present assessments should be regarded as provisional. Some critical experiments are suggested for this system.
Place, publisher, year, edition, pages
2008. Vol. 32, no 2, 399-412 p.
thermodynamic modeling, Y2O3-Al2O3-SiO2, liquid model, CEF, yttrium-aluminum-garnet, rare-earth aluminate, phase-equilibria, aluminosilicate glasses, eutectic composition, 2-sublattice model, molecular-dynamics, melting behavior, heat-capacity, liquid
IdentifiersURN: urn:nbn:se:kth:diva-5242DOI: 10.1016/j.calphad.2008.03.003ISI: 000257617200018ScopusID: 2-s2.0-44649090572OAI: oai:DiVA.org:kth-5242DiVA: diva2:8115
QC 201003292005-06-012005-06-012011-10-18Bibliographically approved