The Kinetic Peculiarities of the Nanocrystallization of Amorphous Alloys Fe84Nb2B14, which are Doped by Rare Earth Metals
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Published:2017-03-15
Issue:1
Volume:18
Page:122-128
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ISSN:2309-8589
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Container-title:Фізика і хімія твердого тіла
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language:
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Short-container-title:PCSS
Author:
Boichyshyn L.,Danyliak M.-O.,Kotur B.,Mika T.
Abstract
The thermal stability and crystallization of the Fe82Nb2B14RE2 (RE = Y, Gd, Tb, Dy) amorphous alloys were investigated by differential scanning calorimetric (DSC) method. By X-ray diffraction (XRD) method has been established that the initial AMA have amorphous structure. The RE alloying of Fe82Nb2B14RE2 amorphous alloys increase the nanocrystallization temperatures for ~ 110 K and activation energies of crystallization for ~ 330 kJ/mol. The Avrami constant was found to be 1.86 for Fe84Nb2B14 at 703 K, 1.17 for Fe82Nb2B14Y2 at 813 K, 1.36 for Fe82Nb2B14Gd2 at 808 K, 1.76 for Fe82Nb2B14Tb2 at 808 K and 1.92 for Fe82Nb2B14Dy2 at 808 K. Two-dimensional diffusion controlled growth mechanism with decreasing nucleation rate was observed in the alloys.
Publisher
Vasyl Stefanyk Precarpathian National University
Subject
Physical and Theoretical Chemistry,Condensed Matter Physics,General Materials Science
Cited by
2 articles.
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