Determination of the kinetic parameters for crystallization directly from isothermal DSC curves

Abstract

The determination of crystallization kinetic parameters is central to elucidating the transformation mechanisms in glassy systems, particularly when analyzed within the framework of the Kolmogorov–Johnson–Mehl–Avrami equation. In this paper, we show that the key kinetic parameters of crystallization of amorphous materials (the activation energy E, the Avrami exponent n and the crystallization rate constant k) can be evaluated directly from the DSC curves measured at various crystallization temperatures of the isothermal measurements. The applicability of these methods was tested on In10Se90 and Sb10Se90 chalcogenide glasses. The values of the kinetic parameters obtained in this study are compared with values obtained using conventional isothermal and non-isothermal measurements.