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A kind of low-loss nano-ferrite magnetic material and preparation method thereof

A technology of nano-ferrite and magnetic material, applied in the field of sintered ferrite, can solve the problems of obvious thermal effect, low efficiency of electromagnetic induction wireless charging equipment, unsafe charging, etc., to improve mechanical properties, reduce losses, and comprehensive performance boosted effect

Active Publication Date: 2022-04-15
深圳信义磁性材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These shortcomings of materials will lead to low efficiency of electromagnetic induction wireless charging equipment, obvious thermal effects of charging equipment such as batteries, and unsafe charging.

Method used

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  • A kind of low-loss nano-ferrite magnetic material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A low-loss nano-ferrite magnetic material, which is made of the following raw materials in mass percentage: Fe 2 o 3 50%, MgO 3%, BaO 3%, InN 0.05%, Bi 2 o 3 0.8%, surface modified Ni particles 0.01%, Mn 3 o 4 / Ce nanoparticles 0.05%, kaolin 0.1%, balance Mn 3 o 4 .

[0027] The surface-modified Ni particles are prepared by the following method:

[0028] (1) Disperse 5g of nickel oxide powder in the ethanol solution of 250mL mercaptoacetic acid, dry and collect after washing with distilled water and absolute ethanol respectively, obtain the nickel oxide powder of pretreatment;

[0029](2) Disperse 3.0 g of pretreated nickel oxide powder in 240 mL of ethanol solution of zirconium tetrachloride, stir in a water bath at 70° C. for 30 min, separate the solid, and then disperse it in 240 mL of ethanol solution of phthalic acid. Stir at 50° C. for 30 min, wash with absolute ethanol, and vacuum-dry at 100° C. to finally obtain surface-modified Ni particles.

[0030] ...

Embodiment 2

[0042] A low-loss nano-ferrite magnetic material, which is made of the following raw materials in mass percentage: Fe 2 o 3 55%, MgO5%, BaO4%, InN0.07%, Bi 2 o 3 1%, surface modified Ni particles 0.02%, Mn 3 o 4 / Ce nanoparticles 0.07%, kaolin 0.3%, balance Mn 3 o 4 .

[0043] The surface-modified Ni particles are prepared by the following method:

[0044] (1) Disperse 5g of nickel oxide powder in the ethanol solution of 250mL mercaptoacetic acid, dry and collect after washing with distilled water and dehydrated alcohol respectively, obtain the nickel oxide powder of pretreatment;

[0045] (2) Disperse 3.0 g of pretreated nickel oxide powder in 240 mL of ethanol solution of zirconium tetrachloride, stir in a water bath at 70° C. for 30 min, separate the solid, and then disperse it in 240 mL of ethanol solution of phthalic acid. Stir at 50° C. for 30 min, wash with absolute ethanol, and vacuum-dry at 100° C. to finally obtain surface-modified Ni particles.

[0046] Th...

Embodiment 3

[0058] A low-loss nano-ferrite magnetic material, which is made of the following raw materials in mass percentage: Fe 2 o 3 60%, MgO8%, BaO5%, InN 0.09%, Bi 2 o 3 1.2%, surface modified Ni particles 0.03%, Mn 3 o 4 / Ce nanoparticles 0.08%, kaolin 0.4%, balance Mn 3 o 4 .

[0059] Preferably, the surface-modified Ni particles are prepared by the following method:

[0060] (1) Disperse 5g of nickel oxide powder in the ethanol solution of 250mL mercaptoacetic acid, dry and collect after washing with distilled water and dehydrated alcohol respectively, obtain the nickel oxide powder of pretreatment;

[0061] (2) Disperse 3.0 g of pretreated nickel oxide powder in 240 mL of ethanol solution of zirconium tetrachloride, stir in a water bath at 70° C. for 30 min, separate the solid, and then disperse it in 240 mL of ethanol solution of phthalic acid. Stir at 50° C. for 30 min, wash with absolute ethanol, and vacuum-dry at 100° C. to finally obtain surface-modified Ni particles...

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Abstract

The invention discloses a low-loss nano-ferrite magnetic material and a preparation method thereof, belonging to the technical field of sintered ferrite. The ferrite of the present invention is made of Fe 2 o 3 , MgO, BaO, InN, Bi 2 o 3 , surface modified Ni particles, Mn 3 o 4 / Ce nanoparticles, kaolin, balance Mn 3 o 4 Prepared. The present invention adds surface-modified Ni particles and Mn 3 o 4 / Ce nanoparticles, the addition of Ni particles promotes the Mn 3 o 4 / Homogeneous dispersion of Ce nanoparticles in ferrite raw materials. mn 3 o 4 / Ce nanoparticles can effectively increase the resistivity of the grain boundary, increase the resistivity, reduce the loss, and effectively improve the mechanical properties of the material. Surface modified Ni particles and Mn 3 o 4 / The synergistic effect of the Ce nanoparticles and the two have jointly realized the improvement of the comprehensive performance of the ferrite magnetic material.

Description

technical field [0001] The invention belongs to the technical field of sintered ferrite, and in particular relates to a low-loss nanometer ferrite magnetic material and a preparation method thereof. Background technique [0002] Manganese zinc ferrite is a kind of soft magnetic ferrite, which belongs to spinel structure. It is made of oxides of iron, manganese, zinc and their salts by ceramic technology. It has a high initial permeability. It is generally used in the frequency range of 1 kHz to 10 MHz. It can be used to make inductors, transformers, filter cores, magnetic heads and antenna rods, usually called ferrite cores. Soft ferrite material is the basic material of electronics industry and information industry, and it is widely used. [0003] Electronic products are the product of the development of modern society. Nowadays, people's life is increasingly dependent on various electronic products. Miniaturization, light weight, and integration are irreversible trend...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/34C04B35/26
CPCC04B35/2633C04B35/2625C04B35/265C04B35/2641C04B2235/3215C04B2235/3298C04B2235/3263C04B2235/349C04B2235/3229C04B2235/3852C04B2235/405C04B2235/40C04B2235/6562
Inventor 刘立新
Owner 深圳信义磁性材料有限公司