Glass transition kinetics and thermal stability of Se82-xTe18Sbx (x=0, 4, 8 and 12 at %) glassy alloys

Glass transition kinetics of Se82-xTe18Sbx (x = 0, 4, 8 and 12 at.%) glassy alloys has been studied using differential scanning calorimetry (DSC). DSC runs were taken at different heating rates (5, 10, 15 and 20 K/min) for each samples. Heating rate dependence of glass transition temperature (T-g) has been studied using Lasocka empirical relation. Activation energy of glass transition (E-g) has been determined using Kissinger and Moynihan's relation. Effect of Sb concentration on glass transition temperature and activation energy has been studied. Thermal stability of Se82 - xTe18Sbx glassy alloys has also been investigated using Dietzal relation, Saad and Poulin relation, Hurby parameter (H-r) and Lie and Liu parameter (gamma). Compositional dependence of parameters investigated for thermal stability has also been studied.