期刊
COMPUTATIONAL MATERIALS SCIENCE
卷 66, 期 -, 页码 20-27出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.commatsci.2012.04.040
关键词
K2O-SiO2; Na2O-SiO2; Phase diagram; CALPHAD
资金
- Federal Ministry of Education and Research of Germany in the framework of Virtuhcon [03Z2FN12]
The phase diagrams of the M2O-SiO2 (M = K, Na) binary systems were assessed using the Calculation of Phase Diagram (CALPHAD) technique. The thermochemical and phase equilibrium information taken from the literature for these two binary systems have been evaluated, and a series of thermodynamic parameters was obtained to describe each phase in these systems. The liquid phase was described by the ionic two-sublattice model with the formula (M+1)(P)(O-2, SiO4-4, SiO20, Va(-))(Q) (M = K, Na). The heat capacities of solid phases were taken into consideration in this optimization process, a brief review of which is given in this work. The calculated phase equilibria were found to be in agreement with available experimental data. (c) 2012 Elsevier B.V. All rights reserved.
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