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A kind of high frequency, wide temperature and low loss soft ferrite material and preparation method thereof

A soft magnetic ferrite, low loss technology, applied in the magnetic direction of inorganic materials, can solve problems such as unsatisfactory use requirements and increased core loss, and achieve the effects of grain refinement, loss reduction, and eddy current loss reduction

Active Publication Date: 2022-07-26
NANTONG GUANYOUDA MAGNET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The requirements for the high-frequency core loss characteristics of magnetic materials are also getting higher and higher, and the core losses of various magnetic core materials currently used are sharply increased in the high-frequency band, which cannot meet the requirements of use, so there is an urgent need for a high-bandwidth Low temperature and low loss soft ferrite materials to meet people's requirements

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  • A kind of high frequency, wide temperature and low loss soft ferrite material and preparation method thereof

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Effect test

Embodiment 1

[0029] The invention provides a high-frequency, wide-temperature, low-loss soft ferrite material, which includes a main material component and an auxiliary material component. The main material components include 52.4 mol% of ferric oxide, 9.3 mol% of zinc oxide, and the rest are oxidized manganese;

[0030] The auxiliary ingredients include calcium carbonate, cobalt trioxide, niobium pentoxide, titanium dioxide, zirconium dioxide, silicon dioxide, copper oxide, tantalum pentoxide and diboron trioxide.

[0031]In a preferred embodiment, based on the total weight of the main ingredients, the auxiliary ingredients include the following contents: calcium carbonate 0.02wt%, cobalt trioxide 0.3wt%, niobium pentoxide 0.03wt%, titanium dioxide 0.05wt% %, zirconium dioxide 0.001wt%, silicon dioxide 0.001wt%, copper oxide 0.05wt%, tantalum pentoxide 0.06wt%, diboron trioxide 0.05wt%.

[0032] The invention also provides a preparation method of a high-frequency, wide-temperature and lo...

Embodiment 2

[0045] Different from embodiment 1, the molar percentage content of the main ingredient is ferric oxide 53mol%, zinc oxide 9.5mol%, and the rest are manganese oxide;

[0046] Based on the total weight of the main ingredients, the auxiliary ingredients include the following percentages: calcium carbonate 0.04wt%, cobalt trioxide 0.35wt%, niobium pentoxide 0.04wt%, titanium dioxide 0.1wt%, zirconium dioxide 0.008 wt %, silicon dioxide 0.0045 wt %, copper oxide 0.1 wt %, tantalum pentoxide 0.08 wt %, diboron trioxide 0.1 wt %.

[0047] In a preferred embodiment, the obtained high-frequency, wide-temperature and low-loss soft ferrite material has a magnetic permeability of 3620 at room temperature. Magnetic loss is 108KW / cm 3 .

Embodiment 3

[0049] What is different from embodiment 1-2 is that the molar percentage content of the main ingredients is ferric oxide 53.5mol%, zinc oxide 9.7mol%, and the rest are manganese oxide;

[0050] Based on the total weight of the main ingredients, the following percentages of auxiliary ingredients: calcium carbonate 0.06wt%, cobalt trioxide 0.4wt%, niobium pentoxide 0.05wt%, titanium dioxide 0.15wt%, zirconium dioxide 0.015wt%, Silicon dioxide 0.008wt%, copper oxide 0.15wt%, tantalum pentoxide 0.1wt%, diboron trioxide 0.15wt%.

[0051] In a preferred embodiment, the obtained high-frequency, wide-temperature and low-loss soft ferrite material has a magnetic permeability of 3150 at room temperature. Magnetic loss is 112KW / cm 3 .

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Abstract

The invention discloses a high-frequency, wide-temperature and low-loss soft ferrite material, and in particular relates to the technical field of soft ferrite materials. The rest are manganese oxide; the auxiliary ingredients include calcium carbonate, cobalt trioxide, niobium pentoxide, titanium dioxide, zirconium dioxide, silicon dioxide, copper oxide, tantalum pentoxide and boron trioxide. The invention can effectively improve the resistivity inside the soft ferrite material, thereby reducing the eddy current loss of the magnetic core material during use, and titanium dioxide and tantalum pentoxide have the functions of reducing the loss peak and adjusting the temperature and frequency range at which the peak appears. , which can reduce the residual loss of the magnetic core material during use, and copper oxide can reduce Fe in the magnetic core material 2+ The content of ions can increase the resistivity of the magnetic core material, reduce the loss of the magnetic core material, and can meet the needs of people.

Description

technical field [0001] The invention relates to the technical field of soft ferrite materials, and more particularly, the invention relates to a high frequency, wide temperature and low loss soft ferrite material and a preparation method thereof. Background technique [0002] When the magnetization occurs at Hc not greater than 1000A / m, such materials are called soft magnets. Soft ferrite is a ferromagnetic oxide with Fe2O3 as the main component, which is produced by powder metallurgy. Soft ferrite refers to a magnetic material that is easily magnetized and easily 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. The application of soft magnetic materials in industry began at the end of the nineteenth 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 th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/34C04B35/26
CPCC04B35/2658C04B2235/3208C04B2235/3275C04B2235/3232C04B2235/3244C04B2235/3418C04B2235/3281C04B2235/3251C04B2235/3409
Inventor 刘运戴加兵孟力
Owner NANTONG GUANYOUDA MAGNET
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