Iso-conversional approach for study of glass transition and crystallization kinetics of ternary glassy Se98−xAg2Inx (x=0, 2, 4, 6) system

Abstract

The glass transition and crystallization kinetics of Se98−xAg2Inx (x = 0, 2, 4, 6) glasses have been studied under non-isothermal condition using differential scanning calorimetry (DSC). Using model free approach [Kissinger–Akahira–Sunose (KAS), Flynn–Wall–Ozawa (FWO), Tang and Straink], the activation energy of glass transition, ΔEαg and crystallization kinetics, ΔEαc have been plotted as a function of extent of conversion, α. The kinetic parameters such as the activation energy (E), Avrami exponent (n), and rate of crystallization (K) have been determined using Kolmogorov–Johnson–Mehl–Avrami (KJMA) model. Glassy nature of as prepared samples was confirmed by XRD (X-ray diffraction), surface morphology and diffraction pattern by SEM and TEM, respectively.