Glass-forming liquids exhibit a pronounced diversity in the viscosity-temperature relation. This has been characterised by the liquid fragility index to quantify the extent of the non-Arrhenian flow. Precise and accurate determination of liquid fragility is important for understanding a range of phenomena and controlling industrial glass melting processes. In this study, temperature-modulated differential scanning calorimetry (TM-DSC) is used to determine liquid fragility of a wide range of oxide compositions, including tellurites, borates and silicates. Data is compared to those determined using viscometry and the Moynihan DSC approach.
Origin
Aalborg University, Denmark
Journal Title
Applied Glass Science 10 3 July 2019 321-329
Sector
Special Glass
Class
S 4527