The Kinetic Peculiarities of the Nanocrystallization of Amorphous Alloys Fe84Nb2B14, which are Doped by Rare Earth Metals
Journal Title: Фізика і хімія твердого тіла - Year 2017, Vol 18, Issue 1
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.
Authors and Affiliations
L. Boichyshyn, M. O. Danyliak, B. Kotur, T. Mika
Keywords
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- EP ID EP263690
- DOI 10.15330/pcss.18.1.122-128
- Views 39
- Downloads 0
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