Author： Silva D. Ribeiro C. Crespi M.
Publisher： Springer Publishing Company
ISSN： 1388-6150
Source： Journal of Thermal Analysis and Calorimetry, Vol.72, Iss.1, 2003-04, pp. : 151-157
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Abstract
Fluoride glasses have been extensively studied due to their high transparency in the infrared wavelength. The crystallization kinetics of these systems has been studied using DTA and DSC techniques. Most of the experimental data is frequently investigated in terms of the Johnson—Mehl—Avrami (JMA) model in order to obtain kinetic parameters.In this work, DSC technique has been used to study the crystallization of fluorozirconate glass under non-isothermal conditions. It was found that JMA model was not fit to be applied directly to these systems, therefore, the method proposed by Málek has been applied and the Šesták—Berggren (SB) model seems to be adequate to describe the crystallization process.
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