High-magnetic-conductibility low-loss soft-magnetic ferrite material and preparation method therefor

A technology of soft magnetic ferrite and high magnetic permeability, applied in the field of soft magnetic ferrite, can solve the problems of low magnetic core loss and unsatisfactory magnetic core loss, etc., to achieve reduced magnetic core loss, high magnetic permeability, and improved resistivity Effect

Inactive Publication Date: 2015-12-02
ZHONGDE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the soft magnetic ferrite in the prior art is often not ideal in magnetic core loss, and it is difficult to meet the actual requirements. Now a new soft magnetic ferrite material with low magnetic core loss and high initial magnetic permeability is needed.

Method used

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  • High-magnetic-conductibility low-loss soft-magnetic ferrite material and preparation method therefor
  • High-magnetic-conductibility low-loss soft-magnetic ferrite material and preparation method therefor

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preparation example Construction

[0028] refer to figure 1 , the preparation method of a kind of high magnetic permeability and low loss soft ferrite material that the present invention proposes, comprises the following steps:

[0029] S1. After adding the adsorbent into water and stirring evenly, ultrasonically disperse for 25-40 minutes to obtain the first material;

[0030] S2, adding ferric nitrate, manganese nitrate and zinc nitrate into water to dissolve to obtain the second material;

[0031] S3, adding the second material dropwise to the first material, followed by evaporating and drying, roasting, and cooling to obtain a powder material;

[0032] S4. Add niobium oxide, neodymium oxide, vanadium oxide, copper oxide, calcium oxide, barium oxide, titanium dioxide, silicon dioxide and binder to the powder material for spray granulation, tablet molding, and sintering to obtain high magnetic permeability and low permeability Lossy soft ferrite material.

Embodiment 1

[0035]The present invention proposes a soft magnetic ferrite material with high magnetic permeability and low loss. Its raw materials include main materials and auxiliary materials, wherein the main materials include: 52.5 mol% of iron nitrate, 35.5 mol% of manganese nitrate, and 12 mol% of zinc nitrate; Based on the total weight of the main ingredients, the auxiliary materials include: niobium oxide 700ppm, neodymium oxide 100ppm, vanadium oxide 300ppm, copper oxide 200ppm, calcium oxide 800ppm, barium oxide 20ppm, titanium dioxide 100ppm, silicon dioxide 10ppm, polycarbonate 2500ppm, adsorption agent 8 x 10 6 ppm.

[0036] The preparation method of the above-mentioned high magnetic permeability and low loss soft ferrite material also proposed by the present invention comprises the following steps:

[0037] S1. After adding the adsorbent into water and stirring evenly, the first material was obtained after ultrasonic dispersion for 30 minutes;

[0038] S2, adding ferric nit...

Embodiment 2

[0042] The present invention proposes a soft magnetic ferrite material with high magnetic permeability and low loss. Its raw materials include main materials and auxiliary materials, wherein the main materials include: iron nitrate 53mol%, manganese nitrate 34mol%, zinc nitrate 13mol%; Based on the total weight of materials, the auxiliary materials include: niobium oxide 400ppm, neodymium oxide 200ppm, vanadium oxide 220ppm, copper oxide 270ppm, calcium oxide 400ppm, barium oxide 60ppm, titanium dioxide 50ppm, silicon dioxide 60ppm, SBR latex 2200ppm, adsorbent 8.8× 10 6 ppm; of which calcium oxide, barium oxide, titanium dioxide and silicon dioxide are 700 mesh.

[0043] The preparation method of the above-mentioned high magnetic permeability and low loss soft ferrite material also proposed by the present invention comprises the following steps:

[0044] S1. After adding the adsorbent to water and stirring evenly, the first material was obtained after ultrasonic dispersion f...

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Abstract

The invention discloses a high-magnetic-conductibility low-loss soft-magnetic ferrite material. The raw materials comprise main materials and auxiliary materials. The main materials comprise, by mole percentages, 52.5-53.5mol% of ferric nitrate, 34.0-35.5mol% of manganous nitrate and 12-13.5mol% of zinc nitrate. With the total weight of the main materials as a base, the auxiliary materials comprise 300-700ppm of niobium oxide, 100-260ppm of neodymium oxide, 200-300ppm of vanadium oxide, 200-300ppm of copper oxide, 250-800ppm of calcium oxide, 20-80ppm of barium oxide, 20-100ppm of titanium dioxide, 10-80ppm of silicon oxide, 2000-2500ppm of bonding agents and 8-9*10<6>ppm. The invention also discloses a preparation method for a high-magnetic-conductibility low-loss soft-magnetic ferrite material.

Description

technical field [0001] The invention relates to the technical field of soft ferrite, in particular to a soft ferrite material with high magnetic permeability and low loss and a preparation method thereof. Background technique [0002] Soft ferrite refers to a magnetic material that is easily magnetized and demagnetized under the action of an external magnetic field. It is often a composite oxide obtained by sintering iron oxide and one or more other metal oxides. Soft ferrite materials are widely used basic materials in industries such as electronics, electromechanical and communication networks. They play a very important role in the development of modern industry and technology, and have made outstanding contributions to the optimization and improvement of the performance of electronic components. With the continuous development of the electronics industry, the use trend of small integration, light, thin, high frequency and low loss of electronic products, it can be forese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26
Inventor 蔡云龙徐臣玲杨安贵闵加云刘晶
Owner ZHONGDE ELECTRONICS
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