Résumé

The kinetics of crystallization of the Ni33.3Zr66.7 metal glass was studied under isothermal and anisothermic conditions by electrical resistivity measurements. The apparent crystallization activation energy, Ex, for a series of electrical resistivity measurements, at different heating rates 0.5, 2.5, 5 , 7.5 °C/min, was calculated on the order of 371.4 kJ / mol and 382.2 kJ / mol respectively by Kissinger\'s methods. and Ozawa. The Johnson-Mehl-Avrami (JMA) equation was applied to the isothermal crystallization kinetics, and the local Avrami exponents were determined in the range of 2.97 to 3.23 with an average value of n = 3.1, which indicates that the crystallization process which follows a three-dimensional crystal growth pattern is mainly controlled by diffusion with a growing nucleation rate.
Keywords: Metal glass , Electrical resistivity, Absolute thermoelectric power, Kinetics of crystallization,
Activation energy

Information

Item Type:	Master
Divisions:
ePrint ID:	3980
Date Deposited:	2023-05-23
Further Information:	Google Scholar
URI:	https://www.univ-soukahras.dz/fr/publication/article/3980

BibTex