Critical evaluation and optimization of the thermodynamic properties and phase diagrams of the CaO-Al[sub 2]O[sub 3], Al[sub 2]O[sub 3]-SiO[sub 2], and CaO-Al[sub 2]O[sub 3]-SiO[sub 2] systems

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Metallurgical Transactions, B (Process Metallurgy); (United States)

DOI:https://doi.org/10.1007/BF02663141· OSTI ID:6075915

Eriksson, G; Pelton, A D ^[1]

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1. Ecole Polytechnique, Montreal, Quebec (Canada). Centre for Research in Computational Thermochemistry

All available thermodynamic and phase diagram data have been critically assessed for all phases in the CaO-Al[sub 2]O[sub 3], Al[sub 2]O[sub 3]-SiO[sub 2], and CaO-Al[sub 2]O[sub 3]-SiO[sub 2] systems at 1 bar pressure from 298 K to above the liquidus temperatures. All reliable data for the binary systems have been simultaneously optimized to obtain, for each system, one set of model equations for the Gibbs energy of the liquid slag and all solid phases as functions of composition and temperature. The modified quasichemical model was used for the slag. With these binary parameters and those from the optimization of the CaO-SiO[sub 2] system reported previously, the quasichemical model was used to predict the thermodynamic properties of the ternary slag. Two additional small ternary parameters wee required to reproduce the ternary phase diagram and ternary activity data to within experimental error limits. The calculated optimized phase diagram and thermodynamic properties are self-consistent and are the most reliable currently available estimates of the true values.

• OSTI ID: 6075915
• Journal Information: Metallurgical Transactions, B (Process Metallurgy); (United States), Journal Name: Metallurgical Transactions, B (Process Metallurgy); (United States) Vol. 24B:5; ISSN MTTBCR; ISSN 0360-2141
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602 -- Other Materials-- Structure & Phase Studies
360606* -- Other Materials-- Physical Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
DIAGRAMS
DISPERSIONS
ENERGY
EQUATIONS
FORMATION FREE ENTHALPY
FREE ENTHALPY
MATHEMATICAL MODELS
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHASE STUDIES
PHYSICAL PROPERTIES
SILICON COMPOUNDS
SILICON OXIDES
SLAGS
THERMODYNAMIC PROPERTIES