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Soft-magnetic ferrite with high saturation magnetic induction and preparation method thereof

A technology of magnetic induction and soft ferrite, applied in the field of soft ferrite, can solve problems such as inability to guarantee mass production

Inactive Publication Date: 2015-11-25
ZHONGDE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of the electronics industry and the expansion of application fields, the requirements for magnetic materials are getting higher and higher, and the classification requirements for material properties are more detailed and specialized. It is hoped that the corresponding powder indicators of the product can reach: magnetic permeability It is around 2000, and the core loss is less than 440KW / m under the test conditions of 100Kc, 200mT, and 100°C 3 , the saturation magnetic induction is 450mT at 25°C, but the materials currently used cannot guarantee mass production of products that meet this requirement

Method used

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  • Soft-magnetic ferrite with high saturation magnetic induction and preparation method thereof

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preparation example Construction

[0023] refer to figure 1 , a kind of preparation method of the soft magnetic ferrite of high saturation magnetic induction proposed by the present invention, comprises the following steps:

[0024] S1. Mix the first material and the second material evenly, and then add them to a vibrating mill for mixing and grinding to obtain a mixed material A;

[0025] S2. Put the mixed material A into a flaking machine to perform flaking treatment to obtain the mixed material B;

[0026] S3. Pre-burning the mixed material B to obtain the pre-burned material;

[0027] S4. After crushing the calcined material, add absolute ethanol to carry out wet ball milling for 40-48 hours to obtain a mixed slurry;

[0028] S5, adding the mixed slurry into a spray dryer for granulation to obtain soft ferrite with high saturation magnetic induction.

Embodiment 1

[0031] A kind of soft magnetic ferrite with high saturation magnetic induction proposed by the present invention, its raw material includes the first material and the second material; wherein the first material includes: iron oxide: 52.0 mol%, manganese oxide: 42.0 mol%, Zinc oxide: 6.0mol%; based on the total mass of the first material, the second material includes: silicon oxide: 100ppm, calcium oxide: 300ppm, niobium oxide: 700ppm, zirconium oxide: 300ppm, nickel oxide: 3000ppm.

[0032] The preparation method of the above-mentioned soft ferrite with high saturation magnetic induction proposed by the present invention comprises the following steps:

[0033] S1. Mix the first material and the second material evenly, and then add them to a vibrating mill for mixing and grinding to obtain a mixed material A;

[0034] S2. Put the mixed material A into a flaking machine to perform flaking treatment to obtain the mixed material B;

[0035] S3. Pre-calcining the mixed material B ...

Embodiment 2

[0039]A kind of soft magnetic ferrite with high saturation magnetic induction proposed by the present invention, its raw material includes the first material and the second material; wherein the first material includes: iron oxide: 53.0mol%, manganese oxide: 39.0mol%, Zinc oxide: 8.0mol%; based on the total mass of the first material, the second material includes: silicon oxide: 50ppm, calcium oxide: 700ppm, niobium oxide: 400ppm, zirconium oxide: 450ppm, nickel oxide: 2600ppm, cobalt oxide: 400ppm.

[0040] The preparation method of the above-mentioned soft ferrite with high saturation magnetic induction proposed by the present invention comprises the following steps:

[0041] S1. Mix the first material and the second material evenly, and then add them to a vibrating mill for mixing and grinding to obtain a mixed material A;

[0042] S2. Put the mixed material A into a flaking machine to perform flaking treatment to obtain the mixed material B;

[0043] S3. Pre-calcining th...

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Abstract

The invention discloses soft-magnetic ferrite with high saturation magnetic induction. Raw materials of the soft-magnetic ferrite comprise first group of materials and second group of materials; the first group of materials comprise, in percent by substance amount, 52.0-53.5 mol% of ferric oxide, 38.0-42.0 mol% of manganese oxide, and 6.0-8.0 mol% of zinc oxide; by taking the total mass of the first group of materials as a reference, the second group of materials comprise 25-100 ppm of silicon oxide, 300-800 ppm of calcium oxide, 300-700 ppm of niobium oxide, 300-500 ppm of zirconium oxide, and 2500-3000 ppm of nickel oxide. The invention also discloses a preparation method of the above soft-magnetic ferrite with high saturation magnetic induction. The obtained soft-magnetic ferrite possesses high saturation magnetic induction, relatively high initial magnetic permeability and low magnetic core loss.

Description

technical field [0001] The invention relates to the technical field of soft ferrite, in particular to a soft ferrite with high saturation magnetic induction and a preparation method thereof. Background technique [0002] The application of soft magnetic materials in industry began at the end of the 19th century, with the rise of electric power and telecommunication technology, and its application range is extremely wide. Soft magnetic materials are not only used in the fields of home appliances, information technology, automobiles and other supporting fields, but more importantly, soft magnetic materials, as the main raw materials for the production of electronic components, have brought a steady stream of demand for them. With the development of the electronics industry and the expansion of application fields, the requirements for magnetic materials are getting higher and higher, and the classification requirements for material properties are more detailed and specialized. ...

Claims

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Application Information

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IPC IPC(8): C04B35/26
Inventor 王晓祥蔡春桥王年朱海林张恩明管成立
Owner ZHONGDE ELECTRONICS
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