Kinetics and influence of thermally induced crystallization of Fe,Ni-containing phases on thermomagnetic properties of Fe40Ni40B12Si8 amorphous alloy

0542506 - ÚFM 2023 RIV NL eng J - Journal Article
Vasić, M. - Žák, Tomáš - Minić, Dragica M.
Kinetics and influence of thermally induced crystallization of Fe,Ni-containing phases on thermomagnetic properties of Fe40Ni40B12Si8 amorphous alloy.
Journal of Thermal Analysis and Calorimetry. Roč. 147, č. 5 (2022), s. 3543-3551. ISSN 1388-6150. E-ISSN 1588-2926
R&D Projects: GA MŠMT(CZ) LQ1601; GA MŠMT(CZ) EF16_013/0001823
Institutional support: RVO:68081723
Keywords : Amorphous alloy * Structural transformations * Crystallization * Magnetic moment * Kinetic triplets
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 4.4, year: 2022
Method of publishing: Limited access
https://link.springer.com/article/10.1007%2Fs10973-021-10819-x

Thermal treatment of Fe40Ni40B12Si8 amorphous alloy leads to crystallization of various Fe and Ni-containing phases and their recrystallization, affecting the functional properties of the alloy. Kinetics of multistep crystallization of Fe40Ni40B12Si8 amorphous alloy and influence of thermally induced microstructural transformations on magnetic moment of the alloy were studied by means of structural examination, thermal analysis and thermomagnetic measurements. Temperature regions of growth and loss of magnetic moment of the alloy were correlated with the microstructural changes. Curie temperatures of the alloy in fully amorphous and fully crystallized form were observed at 620 and 910 K, respectively. Detailed kinetic study including deconvolution of the complex exothermic DTA peaks yielded Arrhenius parameters and kinetic model of individual crystallization steps, which reflect the nature of the studied processes and the alloy chemical composition. The obtained parameters and kinetic models can be used for kinetic predictions of thermal stability and functionality of the alloy.
Permanent Link: http://hdl.handle.net/11104/0322640