Thermodynamic modeling of the Al2O3–B2O3–SiO2 system

Thermodynamic Evaluation and Optimization of the Al2O3–SiO2–AlF3–SiF4 Reciprocal System Using the Modified Quasichemical Model

“…Several mullite solid solution models have been proposed . Recently Swamy et al . modeled the mullite in the Al 2 O 3 –SiO 2 –B 2 O 3 system with a three‐sublattice model within the Compound Energy Formalism (CEF) .…”

“…and model parameters are reported in Table . An error in a formula reported by Swamy et al . has been corrected.…”

“…The mullite at equilibrium at the eutectic temperature contains 65.7 mol% Al 2 O 3 . With the mullite solid solution model used in this work mullite is predicted to be unstable below 434°C.…”

“…The liquid solution is modeled using the Modified Quasichemical Model in the Quadruplet Approximation (MQMQA) with the FactSage™ thermochemical software, and the model from Swamy et al . is used for the mullite solid solution.…”

Thermal behaviour of mixed alumina–silica gels obtained from alkoxides: Phase formation and morphology of powders

“…Since 1924 (the first mention of mullite as a thermodynamically stable phase [4]) more than 20 phase diagrams describing this system have been published. For the SiO 2 -Al 2 O 3 system there are also known calculated phase diagrams [5,6].The phase relations described in them differ significantly and strongly depend on the initial reagents used [7][8][9][10][11][12][13][14][15][16]. The discrepancies concern both the concentration range within which the mullite phase exists (mainly the region enriched in alumina) and the type of its thermal decomposition.…”