Abstract
The phase diagram of the ZrO2-CaO-MgO system was studied both experimentally and computationally. Using the newly developed isoplethal map method, the partial isotherms of the system at 1523,1573,1683, and 1773 K were determined with better accuracy than reported in the literature. The enthalpies of formation of the fluorite cubic structure, with reference to the monoclinic zirconia and the periclase CaO and MgO, were measured calorimetrically. With optimized binary data for the systems ZrO2-MgO and ZrO2-CaO, which were reported elsewhere, and the data for MgO-CaO briefly discussed in this paper, the thermodynamics and phase diagram data of the ternary system were assessed by means of computational optimization. Good agreement between the experimental and computational results were obtained. The liquidus surface was also predicted and compared with the available experimental results.
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Yin, Y., Argent, B. The phase diagrams and thermodynamics of the ZrO2-CaO-MgO and MgO-CaO systems. JPE 14, 588–600 (1993). https://doi.org/10.1007/BF02669140
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DOI: https://doi.org/10.1007/BF02669140