Abstract
Abstract Experimental data on thermodynamic properties and phase relations of the ternary Mn–Ni–O system were reviewed, and by use of the CALPHAD method, a consistent set of model parameters was optimised. The solid oxide phases were modelled using the compound energy formalism. The model allows representation of non-stoichiometry and solid solution in the phases. The distribution of cations between different lattice sites in the two spinel phases is also modelled. The liquid phase is described using the ionic two-sublattice model. The same model is used both for the metallic and the oxide liquid. Good agreement between calculated and experimental values is achieved.
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