Preparation method of iron-based soft magnet with anticorrosive coating layer

Abstract

The invention discloses a preparation method of an iron-based soft magnet with an anticorrosive coating layer. Multiple elements of Ni, Cr, Cu, Al, P and C which can improve the comprehensive performance of Fe-based amorphous soft magnet alloy are adopted to prepare and obtain an iron-based soft magnet substrate; and the surface of the soft magnet alloy is electroplated with the coating layer, sothat bulging and bubble forming caused by a hydrogen evolution effect can be avoided, and the anticorrosive performance of the soft magnet alloy is improved.

Description

technical field

[0001] The invention relates to the field of magnetic material manufacture, in particular to a method for preparing an iron-based soft magnet with an anti-corrosion coating. Background technique

[0002] At present, power electronic devices are developing in the direction of energy saving, miniaturization and high precision. Soft magnetic materials with high saturation induction (BS), low loss and high permeability (μ) have become an important direction of research and development in the field of magnetic materials. Amorphous and nanocrystalline soft magnetic alloys have gradually become a hot spot for development by various related companies and research institutions in recent years because of their soft magnetic properties.

[0003] Nanocrystalline soft magnetic alloys are Fe-based amorphous alloys prepared by single-roller melt quenching. After heat treatment, uniformly distributed α-Fe grains of about 10nm are precipitated from the amorphous alloys. Sinc...