Thermodynamic Assessment of the System MgO–Al2O3
- 1 June 1992
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 75 (6) , 1497-1507
- https://doi.org/10.1111/j.1151-2916.1992.tb04216.x
Abstract
The system MgO–Al2O3 was assessed with the CALPHAD technique using a computerized optimization procedure called PARROT. Two of the solid phases, MgO and spinel, showed extensive solid solubility at high temperature and were modeled with the compound energy model. The third solid phase, α‐Al2O3, was modeled as a stoichiometric phase. For the liquid phase, an ionic two‐sublattice model was used. In total, 13 adjustable parameters were optimized: 3 for the MgO, 8 for the spinel, and 2 for the liquid. This resulted in a consistent thermodynamic description for most of the available experimental data points on the phase diagram as well of the thermodynamic properties.Keywords
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