Thermodynamic modeling of the B₂O₃–SiO₂ and B₂O₃–Al₂O₃ systems

Abstract

Abstract A complete literature review, critical evaluation, and thermodynamic modeling of the phase diagrams and thermodynamic properties of all oxide phases in the binary systems B 2 O 3 – SiO 2 and B 2 O 3 – Al 2 O 3 have been performed. The molten oxide is described by the Modified Quasichemical Model. Discrepancies in the available experimental data have been resolved and an optimized set of self-consistent thermodynamic functions of all phases has been obtained. This thermodynamic database can be used with the FactSage TM thermodynamic computing system to calculate all thermodynamic properties and phase equilibria from 25 °C to above the liquidus temperatures at 1 atm of total pressure and over the entire composition range.