Journal
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
Volume 35, Issue 2, Pages 249-254Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.calphad.2010.11.004
Keywords
Al2O3-CaO-MgO-SiO2; Phase diagram; Solubility; EPMA
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Funding
- VINNOVA through Jernkontoret
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The liquidus in the high basicity region in the Al2O3(30 mass%)-CaO-MgO-SiO2 system were determined experimentally at 1773 and 1873 K using the quench technique followed by EPMA analysis. Based on the experimental data, a phase diagram of the Al2O3(30 mass%)-CaO-MgO-SiO2(< 20 mass%) section was constructed for 1773 and 1873 K. The solubilities of 2CaO center dot SiO2 and 3CaO center dot SiO2 at 1773 K were found to be considerably higher in comparison with the existing phase diagram. Even the solubility of MgO at 1873 K was found to be somewhat higher. In addition, the activities of MgO, CaO and Al2O3 at 1773 K were estimated using the phase diagram information. (C) 2010 Elsevier Ltd. All rights reserved.
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