Soft-magnetic ferrite with low loss and high saturation flux density and preparation method therefor

A technology of magnetic induction and soft ferrite, which is applied in the field of soft ferrite, can solve problems such as the inability to guarantee mass production, and achieve the effects of promoting mass transfer and sintering, increasing resistivity, and reducing core loss

Inactive Publication Date: 2015-12-02
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 core loss of the powder index corresponding to the product will be within Under the test conditions of 100Kc, 200mT, and 100°C, less than 440KW / m 3 , The saturation magnetic induction intensity is greater than 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 low loss and high saturation flux density and preparation method therefor

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preparation example Construction

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

[0024] S1. Mix material A with titanium oxide, calcium oxide, niobium oxide, zirconium oxide, nickel oxide, bismuth oxide, molybdenum oxide, and silicon dioxide evenly, then add it to a vibration mill for mixing and grinding to obtain the first material;

[0025] S2, placing the first material in a flaking machine for flaking to obtain a second material;

[0026] S3. Pre-burning the second material to obtain the third material;

[0027] S4. After crushing the third material, add acetone and perform ball milling for 40-48 hours to obtain a mixed slurry;

[0028] S5. Add the mixed slurry and binder 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 low loss and high saturation magnetic induction proposed by the present invention, its raw material includes material A and material B; wherein material A comprises 56 parts by mole of iron oxide, 45 parts of manganese oxide, 7 parts of zinc oxide, 4 parts of copper oxide; based on the total mass of material A, material B includes: 2500ppm titanium oxide, 700ppm calcium oxide, 100ppm niobium oxide, 800ppm zirconium oxide, 1500ppm nickel oxide, 800ppm bismuth oxide, 300ppm molybdenum oxide, and 500ppm silicon dioxide , Adhesive 2000ppm.

[0032] The preparation method of the above-mentioned soft ferrite with low loss and high saturation magnetic induction that the present invention also proposes comprises the following steps:

[0033] S1. Mix material A with titanium oxide, calcium oxide, niobium oxide, zirconium oxide, nickel oxide, bismuth oxide, molybdenum oxide, and silicon dioxide evenly, then add it to a vibration mill for mixin...

Embodiment 2

[0039] A kind of soft magnetic ferrite with low loss and high saturation magnetic induction proposed by the present invention, its raw material includes material A and material B; wherein material A comprises 60 parts by mole of iron oxide, 40 parts of manganese oxide, 10 parts of zinc oxide, 2 parts of copper oxide; based on the total mass of material A, material B includes: 3000ppm titanium oxide, 300ppm calcium oxide, 300ppm niobium oxide, 400ppm zirconium oxide, 2000ppm nickel oxide, 300ppm bismuth oxide, 500ppm molybdenum oxide, and 200ppm silicon dioxide , Adhesive 2500ppm.

[0040] The preparation method of the above-mentioned soft ferrite with low loss and high saturation magnetic induction that the present invention also proposes comprises the following steps:

[0041] S1. Mix material A with titanium oxide, calcium oxide, niobium oxide, zirconium oxide, nickel oxide, bismuth oxide, molybdenum oxide, and silicon dioxide evenly, then add it to a vibration mill for mixi...

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Abstract

The invention discloses a soft-magnetic ferrite with low loss and a high saturation flux density. The raw materials comprise materials A and materials B. The materials A comprise, by mole, 56-60 parts of iron oxide, 40-45 parts of manganese oxide, 7-10 parts of zinc oxide and 2-4 parts of copper oxide. With the total weight of the materials A as a base, the materials B comprise 2500-3000ppm, 300-700ppm of calcium oxide, 100-300ppm of niobium oxide, 400-800ppm of zirconium oxide, 1500-2000ppm of nickel oxide, 300-800ppm of bismuth oxide, 300-500ppm of molybdenum oxide, 200-500ppm of silicon oxide and 2000-2500ppm of bonding agents. The invention also discloses a preparation method for the soft-magnetic ferrite with low loss and a high saturation flux density.

Description

technical field [0001] The invention relates to the technical field of soft ferrite, in particular to a soft ferrite with low loss and 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26
Inventor 朱长喜徐声玉董金成毛文兵赵晓倩李信琴
Owner ZHONGDE ELECTRONICS
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