Abstract
The system ZrO 2 –CaO–MgO offers the possibility of obtaining different types of advanced materials from mixtures of ZrO 2 with a natural raw material such as dolomite. The development of these promising materials requires the determination of the system’s MgO·CaO–ZrO 2 isoplethal section. The aim of this paper is to carry out the thermodynamic calculation of the system, and especially the isoplethal section mentioned, by means of Calphad methodology. In this sense, the thermodynamic description of the ZrO 2 –CaO–MgO system and its lower order subsystems was achieved and a set of self-consistent parameters reproducing most of the experimental data was obtained. The approach used makes the theoretical estimation of the phase diagrams possible, even in regions with limited or nonexistent experimental information, as is the case of the low temperature range in the ternary system studied.
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