Effects of heat treatment on some magnetic properties of amorphous alloys containing (Fe–Ni)_1−x M _x (M = Si, B)

Abstract

Herein, the effect of various treatment modes on the magnetic properties of amorphous alloys Fe49Ni29Si9B13 and Fe59Ni19Si9B13 obtained by melt spinning was considered. Samples from both alloys were heat-treated separately in the magnetic field and without the field. An increase in soft magnetic properties was detected during the transition to the crystalline phase (Hc = 0.63Oe, Bm = 1.55T, Br = 2.16T). It was determined that the soft magnetic properties of materials disappear with the formation of crystalline phases. The obtained materials were applied by replacing the electrical steel in the core of the LC1E2501 contactor produced by Schneider. During the operation, the result was 7% higher than the plant resource.

Prospects to Use Amorphous Fe–Ni–Si–B Ribbons in Contactor Cores

“…It is known that the microcrystallisation process takes place in an amorphous matrix during the annealing with and without magnetic field [15]. In this Fig.…”

“…This fact also ensures that there will be no effect of the temperature on the application of amorphous materials in contactors with an operating temperature interval of -5 +70 ∘ C [20]. The study of the processes that lead to the change of magnetic parameters during the annealing shows that defects caused by structural relaxation processes due to a deformation are completely annihilated at the beginning of the processing [15,16]. This fact can be said on the basis of the coincidence of the results obtained after a plastic deformation with and without magnetic field (Fig.…”