TY - JOUR
T1 - Thermodynamic modeling of the BaO-SiO2 and SrO-SiO2 binary melts
AU - Romero-Serrano, A.
AU - Cruz-Ramirez, A.
AU - Zeifert, B.
AU - Hallen-Lopez, M.
AU - Hernandez-Ramirez, A.
PY - 2010/4
Y1 - 2010/4
N2 - The evaluation of the thermodynamic properties and the phase diagrams for the binary BaO-SiO2 and SrO-SiO2 systems is carried out using a structural model for silicate melts and glasses. This thermodynamic model is based on the assumption that an addition of metal oxides to silica results in the depolymerization of the silicon-oxygen network, with a characteristic free energy change. A least squares optimization program permits all available thermodynamic and phase diagram data to be optimized simultaneously. In this manner, data for the above binary systems have been analysed and represented with a small number of parameters. The resulting equations represent the thermodynamic and phase diagram data for the alkaline-earth oxide-silica systems within error limits for most of the experimental data. In particular, the measured limiting liquidus slope, at X SiO2 = 1, is well reproduced.
AB - The evaluation of the thermodynamic properties and the phase diagrams for the binary BaO-SiO2 and SrO-SiO2 systems is carried out using a structural model for silicate melts and glasses. This thermodynamic model is based on the assumption that an addition of metal oxides to silica results in the depolymerization of the silicon-oxygen network, with a characteristic free energy change. A least squares optimization program permits all available thermodynamic and phase diagram data to be optimized simultaneously. In this manner, data for the above binary systems have been analysed and represented with a small number of parameters. The resulting equations represent the thermodynamic and phase diagram data for the alkaline-earth oxide-silica systems within error limits for most of the experimental data. In particular, the measured limiting liquidus slope, at X SiO2 = 1, is well reproduced.
UR - http://www.scopus.com/inward/record.url?scp=79951570528&partnerID=8YFLogxK
U2 - 10.1134/S1087659610020045
DO - 10.1134/S1087659610020045
M3 - Artículo
SN - 1087-6596
VL - 36
SP - 171
EP - 178
JO - Glass Physics and Chemistry
JF - Glass Physics and Chemistry
IS - 2
ER -