TITLE:
Kinetic Study of Non-Isothermal Crystallization in Se90-xZn10Sbx (x = 0, 2, 4, 6) Chalcogenide Glasses
AUTHORS:
Lamia Heireche, Mohamed Heireche, Maamar Belhadji
KEYWORDS:
Crystallization Kinetics, Chalcogenide Glasses, Crystallization Temperature, Activation Energy, Differential Scanning Calorimetry
JOURNAL NAME:
Journal of Crystallization Process and Technology,
Vol.4 No.2,
April
23,
2014
ABSTRACT: Crystallization and glass transition kinetics of Se90-xZn10Sbx (x
= 0, 2, 4, 6) chalcogenide glasses
prepared by conventional melt-quenching technique were studied under
non-isothermal condition using a differential scanning Calorimeter (DSC)
measurement at different heating rates 5, 7, 10 and 12°C/min. The glass transition temperatures Tg, the
crystallization temperatures Tc and the peak temperatures of
crystallization Tp were found to be dependent on the
compositions and the heating rates. From the dependence on the heating rates of Tg and Tp, the activation energy for glass
transition, Eg, and the activation energy for
crystallization, Ec, are calculated and their composition
dependence is discussed. The activation energy of glass transition Eg,
Avrami index n, dimensionality of growth m and activation energy
of crystallization Ec have been determined from different
models.