Wide-temperature-range low-loss ferrite and preparation method thereof

A low loss, ferrite technology, applied in the direction of magnetic objects, magnetic materials, electrical components, etc., can solve the problem of high loss, achieve the effect of reducing magnetic loss, uniform grain growth, and promoting grain growth

Inactive Publication Date: 2020-04-21
天长市华磁磁电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the existing technology, the present invention provides a wide temperature and low loss ferrite and its preparation method, which effectively solv

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  • Wide-temperature-range low-loss ferrite and preparation method thereof

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Effect test

Embodiment 1

[0031] A wide-temperature low-loss ferrite, which is made of the following parts by weight of raw materials: 90 parts of iron trioxide, 12 parts of nano-titanium dioxide, 18 parts of magnesium oxide, 6 parts of barium oxide, 52 parts of manganese dioxide, 6 parts of the first mixture, 0.8 parts of the second mixture, wherein the first mixture is a mixture of chromium trioxide, tungsten trioxide, copper oxide, and zinc oxide in a mass ratio of 3:1:4:12; The second mixture is a mixture of lanthanum hexaboride, cerium oxide, and ammonium tungstate in a mass ratio of 2:1:1.

[0032] The preparation method of the first mixture includes the following steps:

[0033] (1) Mix chromium trioxide, tungsten trioxide, copper oxide, and zinc oxide at a high temperature of 320-350℃ for 2-3 hours, then take it out, and cool it with supercooled water;

[0034] (2) The above-mentioned cooled material is pulverized and ground to a particle size of 0.2-0.3 μm to obtain the first mixture.

[0035] The pr...

Embodiment 2

[0046] A wide-temperature low-loss ferrite, the wide-temperature low-loss ferrite is made of the following parts by weight of raw materials: 100 parts of ferric oxide, 18 parts of nano titanium dioxide, 22 parts of magnesium oxide, 12 parts of barium oxide, 60 parts of manganese dioxide, 8 parts of the first mixture, 1.2 parts of the second mixture, wherein the first mixture is a mixture of chromium trioxide, tungsten trioxide, copper oxide, and zinc oxide in a mass ratio of 3:1:4:12; The second mixture is a mixture of lanthanum hexaboride, cerium oxide, and ammonium tungstate in a mass ratio of 2:1:1.

[0047] The preparation method of the first mixture includes the following steps:

[0048] (1) Mix chromium trioxide, tungsten trioxide, copper oxide, and zinc oxide at a high temperature of 320-350℃ for 2-3 hours, then take it out, and cool it with supercooled water;

[0049] (2) The above-mentioned cooled material is pulverized and ground to a particle size of 0.2-0.3 μm to obtain ...

Embodiment 3

[0061] A wide-temperature low-loss ferrite, which is made of the following parts by weight of raw materials: 95 parts of ferric oxide, 15 parts of nano-titanium dioxide, 20 parts of magnesium oxide, 9 parts of barium oxide, 56 parts of manganese dioxide, 7 parts of the first mixture, 1 part of the second mixture, wherein the first mixture is a mixture of chromium trioxide, tungsten trioxide, copper oxide, and zinc oxide in a mass ratio of 3:1:4:12; The second mixture is a mixture of lanthanum hexaboride, cerium oxide, and ammonium tungstate in a mass ratio of 2:1:1.

[0062] The preparation method of the first mixture includes the following steps:

[0063] (1) Mix chromium trioxide, tungsten trioxide, copper oxide, and zinc oxide at a high temperature of 320-350℃ for 2-3 hours, then take it out, and cool it with supercooled water;

[0064] (2) The above-mentioned cooled material is pulverized and ground to a particle size of 0.2-0.3 μm to obtain the first mixture.

[0065] The prepar...

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Abstract

The invention provides wide-temperature-range low-loss ferrite and a preparation method thereof, and relates to the technical field of ferrite processing. The wide-temperature-range low-loss ferrite is prepared from the following raw materials in parts by weight: 90-100 parts of ferric oxide, 12-18 parts of nano titanium dioxide, 18-22 parts of magnesium oxide, 6-12 parts of barium oxide, 52-60 parts of manganese dioxide, 6-8 parts of a first mixture and 0.8-1.2 parts of a second mixture, wherein the first mixture is a mixture of chromium sesquioxide, tungsten trioxide, copper oxide and zinc oxide in a mass ratio of 3: 1: 4: 12, and the second mixture is a mixture of lanthanum hexaboride, cerium oxide and ammonium tungstate in a mass ratio of 2: 1: 1. The preparation method overcomes the defects of the prior art, effectively solves the problem of high loss of the traditional ferrite under the conditions of wide temperature and high frequency, effectively saves energy, and is suitable for various environments and fields.

Description

Technical field [0001] The invention relates to the technical field of ferrite processing, in particular to a wide-temperature low-loss ferrite and a preparation method thereof. Background technique [0002] Ferrite refers to a "functional ceramic material" made by mixing iron oxide with other metal oxides and sintering. It has better magnetic permeability. Compared with ordinary metals, it has the advantages of weaker coercive force and less remanence after the external current is removed. Generally, according to its different formulations, there are four types: manganese-zinc ferrite, nickel-zinc, barium-zinc, and magnesium-zinc. [0003] The application of soft magnetic materials in industry began at the end of the nineteenth century. It appeared with the rise of electric power and telecommunications technology, and its application range is extremely wide. Soft magnetic materials are not only used in the field of home appliances, information technology, automobiles and other s...

Claims

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Application Information

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IPC IPC(8): C04B35/38C04B35/622C04B35/626C04B35/64H01F1/34
CPCC04B35/2625C04B35/2633C04B35/2641C04B35/265C04B35/622C04B35/62605C04B35/64C04B2235/3215C04B2235/3229C04B2235/3232C04B2235/3241C04B2235/3258C04B2235/3267C04B2235/3281C04B2235/3284C04B2235/3804C04B2235/656C04B2235/6565C04B2235/6567H01F1/344
Inventor 张小勇夏树明陈强
Owner 天长市华磁磁电有限公司
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