Authors:
Tran Huu Danh

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A. Defresne

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M. Soustelle

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The normal interpretation of kinetic parameters in thermal analysis (DTA, TG) are deduced from isothermal experiments. In the present work, we propose a method which takes into account non-isothermal conditions, particularly high heating rates are considered. The new basic equation for the reaction rate includes in the Arrhenius relation the number of nuclei per unit volume in the sample at temperatureT. This number is a function of the heating ratev. This model allows, in particular, to account for the curvature of the variation of ln (v/Tc2) as a function of the inverse of the crystallization peak temperature (1/Tc) for high heating rates in DTA experiments. This model is applied successfully to DTA results on an amorphous CdGeAs2 compound.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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