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Isoconversional vs. Model fitting methods

A case study of crystallization kinetics of a Fe-based metallic glass

Journal of Thermal Analysis and Calorimetry
Authors: A. Pratap, T. Lilly Shanker Rao, K. Lad, and Heena Dhurandhar

Abstract  

The crystallization of metallic glasses has been studied quite extensively using differential scanning calorimetry (DSC) technique. Most methods rely on isokinetic hypothesis for the kinetic analysis of crystallization for which the choice of a reliable model is very important. Due to inherent uncertainty in the determination of kinetic parameters, the model-free isoconversional analytical techniques were proposed. However, these isoconversional methods are scarcely used for metallic glasses. In the present work, the crystallization kinetics of Fe67Co18B14Si1 metallic glass through both isoconversional and isokinetic methods has been investigated and attention has been focused on the relative applicability of the two methods.

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