Abstract
The phase equilibrium relationships in the binary system BaO-CeO2 have been investigated by thermal analysis, metallographic and X-ray diffraction methods. The system is characterised by the existence of only one compound, namely, BaCeO3 which is found to melt incongruently at 1480±5°C with formation of solid CeO2 and a liquid. A eutectic is found to occur between BaO and BaCeO3 at 46±0.5 mol% CeO2 and its melting point was determined as 1440±5°C. A narrow solid solubility range of BaO in BaCeO3 exists but no solid solubility of BaCeO3 in either BaO or CeO2 was detected.
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Guha, J.P., Kolar, D. Phase equilibria in the system BaO-CeO2 . J Mater Sci 6, 1174–1177 (1971). https://doi.org/10.1007/BF00550087
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DOI: https://doi.org/10.1007/BF00550087