Mass Spectrometric Investigation of the Vaporization
and Thermodynamic Properties of Components
in the BaOSiO₂ System

Z. G. Tyurnina, V. L. Stolyarova, S. I. Lopatin, and E. N. Plotnikov

Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences,
ul. Odoevskogo 24/2, St. Petersburg, 199155 Russia

Received November 16, 2005

Abstract—The vapor composition and thermodynamic properties of components in the BaO–SiO₂ system at
a temperature of 1970 K are determined using high-temperature mass spectrometry. The thermodynamic prop-
erties of melts in the BaO–SiO₂ system are calculated within the framework of the vacancy variant of the gen-
eralized lattice theory of associated solutions. This made it possible to establish the relation between the ther-
modynamic properties and the structural features of melts in the BaO–SiO₂ system.

DOI: 10.1134/S1087659606050075

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