Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Iron-based amorphous composite magnetic powder core and preparation method

An iron-based amorphous and magnetic powder core technology, which is applied in the field of iron-based amorphous composite magnetic powder cores and its preparation, can solve the problems of inability to meet high magnetic permeability, reduce losses, single non-wafer-shaped powder, etc. The effect of production and promotion, saving production costs and improving production efficiency

Pending Publication Date: 2022-05-10
UNIV OF SCI & TECH BEIJING
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem solved by the present invention is that the existing magnetic powder core components are generally selected as a single non-wafer powder. The impact of the complex coating method of the binder is difficult to predict directly, and the coating method cannot be simplified without affecting the performance of the magnetic powder core, nor can it meet the technical indicators of further reducing loss and improving frequency stability on the basis of high magnetic permeability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Iron-based amorphous composite magnetic powder core and preparation method
  • Iron-based amorphous composite magnetic powder core and preparation method
  • Iron-based amorphous composite magnetic powder core and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] An iron-based amorphous composite magnetic powder core, the iron-based amorphous composite magnetic powder core is composed of mixed powder coated with insulating material, the mixed powder is composed of FeSiBCr amorphous spherical powder and FeNi50 spherical powder, in the mixed powder The proportion of FeSiBCr amorphous spherical powder is 90wt.%, and the insulating material is Macklin E44.

[0044] Wherein: the particle size of the FeSiBCr amorphous spherical powder is 15-43 μm, and the median diameter is 24.6 μm; the particle size of the FeNi50 spherical powder is 11-43 μm, and the median diameter is 27 μm.

[0045] The preparation method of the iron-based amorphous composite magnetic powder core, the preparation method comprises the following steps:

[0046] S1, FeSiBCr amorphous spherical powder and FeNi50 spherical powder are mixed according to the required ratio to obtain mixed powder A;

[0047] S2, epoxy resin is dissolved in acetone solvent to obtain mixed ...

Embodiment 2

[0051] An iron-based amorphous composite magnetic powder core, the iron-based amorphous composite magnetic powder core is composed of mixed powder coated with insulating material, the mixed powder is composed of FeSiBCr amorphous spherical powder and FeNi50 spherical powder, in the mixed powder The proportion of FeSiBCr amorphous spherical powder is 80wt.%, and the insulating material is Macklin E44.

[0052] Wherein: the particle size of the FeSiBCr amorphous spherical powder is 23-45 μm, and the median diameter is 25.1 μm; the particle size of the FeNi50 spherical powder is 14-40 μm, and the median diameter is 27.3 μm.

[0053] The preparation method of the iron-based amorphous composite magnetic powder core, the preparation method comprises the following steps:

[0054] S1, FeSiBCr amorphous spherical powder and FeNi50 spherical powder are mixed according to the required ratio to obtain mixed powder A;

[0055] S2, epoxy resin is dissolved in acetone solvent to obtain mixe...

Embodiment 3

[0059] An iron-based amorphous composite magnetic powder core, the iron-based amorphous composite magnetic powder core is composed of mixed powder coated with insulating material, the mixed powder is composed of FeSiBCr amorphous spherical powder and FeNi50 spherical powder, in the mixed powder The proportion of FeSiBCr amorphous spherical powder is 70wt.%, and the insulating material is Macklin E44.

[0060] Wherein: the particle size of the FeSiBCr amorphous spherical powder is 12-33 μm, and the median diameter is 25.3 μm; the particle size of the FeNi50 spherical powder is 20-41 μm, and the median diameter is 28.1 μm.

[0061] The preparation method of the iron-based amorphous composite magnetic powder core, the preparation method comprises the following steps:

[0062] S1, FeSiBCr amorphous spherical powder and FeNi50 spherical powder are mixed according to the required ratio to obtain mixed powder A;

[0063] S2, epoxy resin is dissolved in acetone solvent to obtain mixe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses an iron-based amorphous composite magnetic powder core and a preparation method, and belongs to the technical field of electronic power. The iron-based amorphous composite magnetic powder core is composed of mixed powder coated with an insulating material, the mixed powder is composed of FeSiBCr amorphous spherical powder and FeNi50 spherical powder, and the insulating material is epoxy resin. The preparation method comprises the following steps: firstly, mixing FeSiBCr amorphous spherical powder and FeNi50 spherical powder according to a required proportion to obtain mixed powder A; placing the mixed powder A in a mixed solution of epoxy resin and an organic solvent for insulation coating treatment, and fully stirring and drying to obtain mixed powder B; and carrying out compression molding in a mold, and carrying out stress relief annealing to obtain the iron-based amorphous composite magnetic powder core. According to the method, the technological process is simple, the production period is short, and the obtained composite material magnetic powder core has high magnetic conductivity, low loss and high density.

Description

technical field [0001] The invention belongs to the technical field of electronic power, and relates to an iron-based amorphous composite magnetic powder core and a preparation method thereof. Background technique [0002] Magnetic powder cores are prepared by powder metallurgy methods such as pressing from soft magnetic materials coated with binders and insulating agents. The soft magnetic performance of magnetic powder core is unmatched by other soft magnetic materials. Due to the small particle size of the powder core and two layers of insulating coatings between the particles, the resistance of the magnetic powder core is effectively increased, the eddy current loss is reduced, and the magnetic permeability does not change much with the frequency, so it is obtained. Wide range of applications. With the continuous development of the field of electronic power, electronic equipment continues to develop in the direction of miniaturization and high frequency, which undoubte...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01F1/153H01F41/02
CPCH01F1/15308H01F41/0246
Inventor 周香林林建鹏王沿东
Owner UNIV OF SCI & TECH BEIJING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com