TY - JOUR
T1 - Thermodynamic modeling of alkali metal oxide-silica binary melts
AU - Romero-Serrano, Antonio
AU - Gomez-Yañez, Carlos
AU - Hallen-Lopez, Manuel
AU - Araujo-Osorio, Jorge
PY - 2005/1
Y1 - 2005/1
N2 - The evaluation of the thermodynamic properties as well as the phase diagrams for the binary Na2O-SiO2, K2O-SiO 2, and Li2O-SiO2 systems are carried out with a structural model for silicate melts and glasses. This thermodynamic model is based on the assumption that each metallic oxide produces the depolymerization reaction of silica 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 these binary systems have been analyzed and represented with a small number of parameters. The resulting equations represent the thermodynamic and phase diagram data for these alkali metal oxide-silica systems within experimental error limits. In particular, the measured limiting liquidus slope at X SiO 2 = 1 is well reproduced.
AB - The evaluation of the thermodynamic properties as well as the phase diagrams for the binary Na2O-SiO2, K2O-SiO 2, and Li2O-SiO2 systems are carried out with a structural model for silicate melts and glasses. This thermodynamic model is based on the assumption that each metallic oxide produces the depolymerization reaction of silica 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 these binary systems have been analyzed and represented with a small number of parameters. The resulting equations represent the thermodynamic and phase diagram data for these alkali metal oxide-silica systems within experimental error limits. In particular, the measured limiting liquidus slope at X SiO 2 = 1 is well reproduced.
UR - http://www.scopus.com/inward/record.url?scp=27644545048&partnerID=8YFLogxK
U2 - 10.1111/j.1551-2916.2004.00022.x
DO - 10.1111/j.1551-2916.2004.00022.x
M3 - Artículo
SN - 0002-7820
VL - 88
SP - 141
EP - 145
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 1
ER -