Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10631384 | Journal of Non-Crystalline Solids | 2005 | 8 Pages |
Abstract
Hypersonic longitudinal sound velocities in five silicate and alumino-silicate liquids have been measured between 293 and 2550Â K by Brillouin spectroscopy. Together with previous observations for four other glasses and liquids of the system SiO2-Al2O3-CaO-MgO, these results are used to discuss changes in hypersonic velocities in three adjacent temperature domains, i.e., below, in, and above the glass transformation range. The temperature dependence of Brillouin velocities is consistent with the observed variations with temperature of viscosity, density, and mean heat capacity for the same three temperature domains. These variations of physical properties of alumino-silicate liquids are qualitatively in agreement with the Inherent Structure Theory for liquids.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Dung Vo-Thanh, Yan Bottinga, Alain Polian, Pascal Richet,