Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1485212 | Journal of Non-Crystalline Solids | 2007 | 4 Pages |
Abstract
Viscosity of (GeSe2)x(Sb2Se3)1âx undercooled melts (x = 0.4-0.8) was measured using parallel-plate method and penetration method. By using these two techniques viscosity of the whole measurable region of undercooled melt and of the part of glass region can be measured. In this relatively broad viscosity interval (seven orders of magnitude) all measured samples show Newtonian behavior and the dependence of their viscosity on temperature can be described by a simple Arrhenius equation. The kinetic fragilities calculated from these dependencies show similar compositional dependence as heat capacity changes at glass transition measured by DSC.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Petr KoÅ¡tál, JiÅà Málek,