Abstract
Differential high-temperature mass spectrometry was used to determine the activities of Bi2O3 in Bi2O3-SiO2 glasses at 1000 K. The activities of SiO2 and integral Gibbs energies in Bi2O3-SiO2 glasses were determined. Negative deviations from the ideal behavior were revealed in the studied system at 1000 K.
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