Analyses and predictions of the thermodynamic properties and phase diagrams of silicate systems

Conference · Wed Jul 01 04:00:00 EDT 1992

OSTI ID:10158987

Blander, M ^[1]; Pelton, A; Eriksson, G ^[2]

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1. Argonne National Lab., IL (United States)
2. Ecole Polytechnique, Montreal, PQ (Canada). Dept. of Metallurgy and Materials Engineering

Molten silicates are ordered solutions which can not be well represented by the usual polynomial representation of deviations from ideal solution behavior (i.e. excess free energies of mixing). An adaptation of quasichemical theory which is capable of describing the properties of ordered solutions represents the measured properties of binary silicates over broad ranges of composition and temperature. For simple silicates such as the MgO-FeO-SiO{sub 2} ternary system, in which silica is the only acid component, a combining rule generally leads to good predictions of ternary solutions from those of the binaries. In basic solutions, these predictions are consistent with those of the conformal ionic solution theory. Our results indicate that our approach could provide a potentially powerful tool for representing and predicting the properties of multicomponent molten silicates.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10158987
• Report Number(s): ANL/CP--76308; CONF-9206196--1; ON: DE92016177
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360606
IRON OXIDES
MAGNESIUM OXIDES
PHASE DIAGRAMS
PHYSICAL PROPERTIES
SILICATES
SOLUTIONS
THERMODYNAMIC PROPERTIES