Abstract
The kinetic reactions mechanism of amorphous to crystalline transformation in the chalcogenide glasses of As50Se50 composition was investigated using differential scanning calorimetry (DSC) data measured under non-isothermal conditions at different heating rates (β = 5, 10, 20, 30 and 40 k min−1). The DSC data were analyzed using the integral g(χ) and differential f(χ) forms which describes the solid-state reactions mechanism utilizing the Ozawa approach. The crystallization activation energy of Ec(χ) was determined using the iso-conversional methods proposed by Friedman, Flynn–Wall–Ozawa and Kissinger–Akahira–Sunose. The results revealed a slight increase of Ec(χ) with the conversion (χ). The results of g(χ), f(χ) and combination g(χ)f(χ) master plots showed that the As50Se50 chalcogenide glasses is a combination of two- and three-dimensional crystal growth.
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