Phase Equilibria and Thermodynamics in the Al 2 O 3 –SiO 2 System—Modeling of Mullite and Liquid
- 24 May 2005
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 88 (9) , 2544-2551
Abstract
The Al 2 O 3 –SiO 2 system has been reassessed using a solution model for mullite extending from sillimanite to a hypothetical state of alumina. The property of sillimanite, to be used to describe one of the end‐members, was extracted from an analysis of the T – P phase diagram for Al 2 SiO 5 polymorphs. It was possible to represent the information on the range of stability of mullite, including some showing that mullite extends to higher SiO 2 contents than represented by the composition of 3:2 mullite. An attempt was made to model the liquid with the ionic two‐sublattice model using a new species AlO 2 −1 . The pressure dependence of Al 2 SiO 5 polymorphs was optimized by a new model recently implemented in Thermo‐Calc.Keywords
This publication has 34 references indexed in Scilit:
- Thermo-Calc & DICTRA, computational tools for materials scienceCalphad, 2002
- A mass spectrometric study of Al 2 O 3 ‐SiO 2 melts using a Knudsen cellRapid Communications in Mass Spectrometry, 2001
- Properties of Mullite Powder Prepared by Coprecipitation and Microstructure of Fired BodiesJournal of the Ceramic Association, Japan, 1986
- Calculation of quasibinary and quasiternary oxide systems — IICalphad, 1979
- Simple Compressibility Relation for SolidsPhysical Review B, 1973
- Thermo-Analytical Investigation of Phase Equilibria in the Al2O3-SiO2 SystemBulletin of the Chemical Society of Japan, 1967
- Kyanite-Andalusite Equilibrium from 700° to 800°CScience, 1966
- Kyanite-Sillimanite Equilibrium at 750°CScience, 1966
- Heat Capacities at Low Temperatures and Entropies at 298.16°K. of Andalusite, Kyanite, and SillimaniteJournal of the American Chemical Society, 1950
- ERRATAJournal of the American Ceramic Society, 1924