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Critical Evaluation and Thermodynamic Modeling of the Mg – Mn – O ( MgO – MnO – MnO 2 ) System
Author(s) -
Panda Sourav Kumar,
Jung InHo
Publication year - 2014
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/jace.13106
Subject(s) - chemistry , phase diagram , thermodynamics , gibbs free energy , phase (matter) , physics , organic chemistry
All phase diagram and thermodynamic data of the MgO – MnO and MgO – MnO – MnO 2 systems were critically evaluated and thermodynamically optimized to obtain one set of thermodynamic model parameters. The MgMn 2 O 4 – Mn 3 O 4 spinel solutions were modeled with two sublattices Compound Energy Formalism by considering the cation distribution between tetrahedral and octahedral sites. The slag phase and monoxide solid solution were also described using the Modified Quasichemical Model and Bragg–Williams random mixing model, respectively. The optimized thermodynamic model parameters can be used with a Gibbs energy minimization routine to calculate the phase diagram and thermodynamic properties of the system at oxygen partial pressures between metal saturation and 1 atm.