Journal
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Volume 110, Issue 2, Pages 567-571Publisher
SPRINGER
DOI: 10.1007/s10973-012-2527-8
Keywords
Glass transition; Metallic glass; Activation energy; Fragility index
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In this study, the kinetics of glass transitions of Ti50Cu20Ni30 and Fe67Co18B14Si1 metallic glasses are studied using thermal analysis technique, i.e., differential scanning calorimetry, by means of continuous heating of the sample at various heating rates. In the present study, based on the heating rate dependence of glass transition temperature (T-g), the activation energy (E) of the glass transition region is determined by two most frequently used approaches, i.e., Moynihan's method and Kissinger's equation. The fragility index, m, is also calculated using T-g, which is a measure of glass-forming ability of the given system. The result shows that the fragility index, m, of the given systems is <16. This indicates that the given systems are strong liquids with excellent glass-forming ability.
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