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Phase equilibria studies in the CaO–SiO 2 –Al 2 O 3 –MgO system with CaO/SiO 2 ratio of 0.9
Author(s) -
Wang Dongqing,
Chen Mao,
Jiang Yang,
Wang Shuai,
Zhao Zhixing,
Evans Tim,
Zhao Baojun
Publication year - 2020
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.17421
Subject(s) - melilite , liquidus , periclase , phase diagram , spinel , phase (matter) , olivine , analytical chemistry (journal) , corundum , mineralogy , nepheline , wollastonite , solid solution , quenching (fluorescence) , materials science , thermodynamics , chemistry , metallurgy , raw material , organic chemistry , chromatography , physics , quantum mechanics , fluorescence
Phase equilibria and liquidus temperatures in the CaO–SiO 2 –Al 2 O 3 –MgO system at a CaO/SiO 2 weight ratio of 0.9 in the liquid phase have been experimentally determined employing high‐temperature equilibration and quenching technique followed by electron probe X‐ray microanalysis. Isotherms at 1573, 1623, 1673, and 1773 K were determined and the primary phase fields of wollastonite, melilite, olivine, periclase, spinel, and corundum have been located. Compositions of the olivine and melilite solid solutions were analyzed and discussed. Comparisons between the newly constructed diagram, existing data, and FactSage predicted phase diagrams were performed and differences were discussed. The present study will be useful for guidance of industrial practices and further development of thermodynamic modeling.