A kind of iron-cobalt based amorphous soft magnetic alloy and preparation method thereof

Abstract

The invention discloses an iron-cobalt-based amorphous soft magnetic alloy and a preparation method thereof. The chemical composition of the iron-cobalt-based amorphous soft magnetic alloy is Fe a co b B c Si d Nb e Cu f , a, b, c, d, e, f respectively represent the atomic percentage of the corresponding component; among them, 35≤a≤58, 14≤b≤36, 19≤c≤20, 4≤d≤5, 3 ≤e≤4, 0.1≤f≤0.4, a+b+c+d+e+f=100. The preparation method comprises: weighing the raw material according to the content of the atomic percentage to make an amorphous alloy strip; performing step-by-step heat treatment on the amorphous alloy under vacuum conditions or in an inert atmosphere to obtain an iron-cobalt-based amorphous soft magnetic alloy, wherein , the step-by-step heat treatment method is as follows: first heat the amorphous alloy strip from room temperature to 460-520°C and keep it for 20min, then water quench to room temperature; then heat the amorphous alloy strip from room temperature to 340-360°C and keep it for 40min, A longitudinal magnetic field was applied simultaneously, followed by water quenching to room temperature. Through step-by-step heat treatment, the magnetic properties of the obtained iron-cobalt-based amorphous soft magnetic alloy are greatly improved, and the optimization of magnetic properties is realized.

Description

A kind of iron-cobalt-based amorphous soft magnetic alloy and preparation method thereof technical field The present invention relates to a kind of amorphous alloy and preparation method thereof, particularly a kind of iron-cobalt-based amorphous soft magnetic alloy and The preparation method based on step-by-step heat treatment belongs to the technical field of amorphous soft magnetic materials. Background technique Soft magnetic material is an important material basis in the field of modern information technology and power electronics, and it usually has low loss, High permeability and low coercivity are widely used in power electronics, information, energy, transportation and other fields. According to soft magnetic properties According to different functional requirements, soft magnetic materials can be divided into metal soft magnetic materials, soft ferrite, amorphous and nanocrystalline soft magnetic materials. With the growth of application requirements, mod...

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Problems solved by technology

[0013] Purpose of the invention: In view of the problem that the soft magnetic properties of the existing amorphous soft magnetic alloys are not high, the present invention provides an iron-cobalt-based amorphous soft magnetic alloy, which has strong amorphous forming ability and good mechanical properties The present invention also provides a method for preparing the amorphous soft magnetic alloy, which realizes the optimization of the magnetic properties of the iron-cobalt-based amorphous alloy by step-by-step heat treatment of the alloy strip

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