Calculated phase diagrams and thermodynamic properties of the Al2O3-Fe2O3-FeO system

The thermodynamic description of the Al2O3-Fe2O3-FeO system has been developed considering newly available experimental data, as well as future compatibility of the present modeling with available descriptions of the Al-Fe, Al-O, and Fe-O systems. All of the experimental data available in the literature have been critically reviewed, and the inconsistent information has been excluded from the optimization. The sublattice model was applied to spinel phase to describe the degree of inversion in FeAl2O4-Fe3O4 solid solutions as well as an extension of homogeneity range in spinel by the dissolution of Al2O3 and Fe2O3. The thermodynamic parameters have been evaluated to describe the experimental data in the oxide part of the system. (C) 2015 Elsevier B.V. All rights reserved.