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Calorimetric study of thermal crystallization kinetics in Se78-xTe20Sn2Pbx (0 ≤ x ≤ 6) alloys

Published online by Cambridge University Press:  22 May 2013

H. Kumar  and
N. Mehta
H. Kumar
Affiliation:
Department of Physics, Banaras Hindu University, Varanasi 221005, India
N. Mehta*
Affiliation:
Department of Physics, Banaras Hindu University, Varanasi 221005, India
*
ae-mail: [email protected]
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Abstract

Glassy samples of Se78−xTe20Sn2Pbx (0 ≤ x ≤ 6) system are prepared by melt quenching method. For non-isothermal study of crystallization kinetics, DSC scans have been taken at the heating rates 5, 10, 15 and 20 K/min in non-isothermal mode. Activation energy of crystallization (Ec) has been calculated using Kissinger method, Matusita-Sakka method and Augis-Bennett method. Various kinetic parameters of crystallization kinetics like peak crystallization temperature (Tc), Rate constants (K) and order parameter (n) are determined using these DSC scans. Thermodynamic parameters such as crystallization enthalpy (ΔHc) and entropy change during the crystallization (ΔS) are also evaluated. Results are discussed using chemical bond approach.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 62 , Issue 2 , May 2013 , 20106
Copyright
© EDP Sciences, 2013

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