Nanocrystallization of iron-based amorphous alloys, influence of magnetization in an alternating magnetic field

Chem. Met. Alloys 11 (2018) 100-106

https://doi.org/10.30970/cma11.0373

Tetiana HULA, Oksana HERTSYK, Myroslava KOVBUZ, Andrii Yakymovych, Klaus W. Richter, Nataliia Pandiak

Nanocrystallization of iron-based amorphous alloys Fe₈₂Nb₂B₁₄RE₂, where RE = Y, Gd, Tb, Dy, was studied by differential thermal analysis (DTA) in the temperature range from 300 K to 1300 K. The structure before and after the first stage of crystallization (~810 K) was checked by X-ray diffraction (XRD). The measurements allowed determining the temperature and activation energy of nanocrystallization. In addition, the influence of magnetization in an alternating magnetic field on the nanocrystallization process in the amorphous alloy Fe₈₂Nb₂B₁₄Gd₂ was studied. The electrochemical changes caused by the alternating magnetic field were investigated by potentiometry and voltammetry.

Resistivity of AMA Fe₈₂Nb₂B₁₄Gd₂, before and after magnetization in AMF.

Keywords

Amorphous and nanocrystalline alloys / Nanocrystallization / Differential thermal analysis / Alternating magnetic field / Electrochemical properties