Ultrahigh-frequency soft magnetic ferrite material and preparation method of magnetic core

A soft ferrite and ultra-high frequency technology, applied in the field of soft ferrite, can solve the problems of low permeability and high loss, and achieve the effects of high permeability, reduced porosity, and high quality factor.

Active Publication Date: 2021-08-20
湖北华磁电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide ultra-high frequency soft ferrite materials and a method for preparing magnetic cores, aiming to solve the problems of low magnetic permeability and high loss at ultra-high frequencies

Method used

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  • Ultrahigh-frequency soft magnetic ferrite material and preparation method of magnetic core
  • Ultrahigh-frequency soft magnetic ferrite material and preparation method of magnetic core

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Embodiment 1

[0038] This embodiment provides an ultra-high frequency soft ferrite material, including the main components and additive components shown in Table 1 below:

[0039] The composition of the ultra-high frequency low loss soft ferrite material of table 1 embodiment 1:

[0040] The main component is in molar parts, including:

[0041] Fe 2 o 3 67mol

[0042] BaCO 3 25mol

[0043] Flake Co 3 o 4 7mol

[0044] Relative to the total amount of main components, the weight percentages of each additive component are respectively:

[0045]

[0046]

[0047] The nano-SiO 2 The size is 50-100nm.

[0048] A method for preparing an ultra-high frequency soft ferrite core, comprising the following steps:

[0049]S1, according to the amount of the ultra-high frequency soft magnetic ferrite material described in any of the above, weigh each main component, then mix each main component, and get M type and Y type through wet ball milling, drying, pre-calcination, and grinding B...

Embodiment 2

[0055] The main components are in parts by mole, including:

[0056] Fe 2 o 3 69mol

[0057] BaCO 3 23mol

[0058] Flake Co 3 o 4 9mol

[0059] Relative to the total amount of main components, the weight percentages of each additive component are respectively:

[0060]

[0061] The nano-SiO 2 The size is 50-100nm.

[0062] A method for preparing an ultra-high frequency soft ferrite core, comprising the following steps:

[0063] S1, according to the amount of the ultra-high frequency soft magnetic ferrite material described in any of the above, weigh each main component, then mix each main component, and get M type and Y type through wet ball milling, drying, pre-calcination, and grinding Barium ferrite magnetic powder;

[0064] S2, according to the dosage of the ultra-high frequency soft magnetic ferrite material described in any of the above, weigh each additive component, and weigh the M-type and Y-type barium ferrite magnetic powder obtained in step S1 at a...

Embodiment 3

[0069] The main components are in parts by mole, including:

[0070] Fe 2 o 3 68mol

[0071] BaCO 3 24mol

[0072] Flake Co 3 o 4 8mol

[0073] Relative to the total amount of main components, the weight percentages of each additive component are respectively:

[0074]

[0075] The nano-SiO 2 The size is 50-100nm.

[0076] A method for preparing an ultra-high frequency soft ferrite core, comprising the following steps:

[0077] S1, according to the amount of the ultra-high frequency soft magnetic ferrite material described in any of the above, weigh each main component, then mix each main component, and get M type and Y type through wet ball milling, drying, pre-calcination, and grinding Barium ferrite magnetic powder;

[0078] S2, according to the dosage of the ultra-high frequency soft magnetic ferrite material described in any of the above, weigh each additive component, and weigh the M-type and Y-type barium ferrite magnetic powder obtained in step S1 at a...

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Abstract

The invention relates to the technical field of soft magnetic ferrites, and discloses an ultrahigh-frequency soft magnetic ferrite material and a preparation method of a magnetic core, and the ultrahigh-frequency soft magnetic ferrite material comprises the following main components in parts by mole: 67-69mol of Fe2O3; 23-25 mol of BaCO3; and 7-9 mol of sheet-shaped Co3O4 (cobalt oxide). Relative to the total amount of the main components, the weight percentages of additive components are as follows: 100-400PPM of Na2CO3; 100-800 PPM of SrCO3 (strontium carbonate); 30-100 PPM of Sm2O3; 100-300 PPM of TiZn; and 100-300 PPM of Li2CO3. According to the invention, the material has the advantages of relatively high magnetic conductivity, low loss and high frequency.

Description

technical field [0001] The invention relates to the technical field of soft ferrite, in particular to a preparation method of an ultra-high frequency soft ferrite material and a magnetic core. Background technique [0002] After realizing the integration of resistors, capacitors, semiconductors and optoelectronic devices, how to apply soft magnetic materials in the ultra-high frequency band and realize the integration of magnetic electronic devices has become a bottleneck restricting the high frequency and integration of electronic information technology. The main reason is that the magnetic permeability of the magnetic materials used for inductors and transformers decreases at high frequencies, so it is the future to further increase the magnetic permeability, increase and widen the operating frequency, reduce losses, meet the wide temperature range and miniaturization development Goals. Contents of the invention [0003] The purpose of the present invention is to provid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622C04B35/63C04B35/634
CPCC04B35/2633C04B35/622C04B35/6303C04B35/63488C04B2235/3272C04B2235/3215C04B2235/3275C04B2235/3201C04B2235/3213C04B2235/3224C04B2235/3203C04B2235/3418C04B2235/404C04B2235/40C04B2235/5445C04B2235/5454C04B2235/602C04B2235/656C04B2235/6562C04B2235/6565C04B2235/6567C04B2235/786
Inventor 黄刚李崇华廖继红卢明超
Owner 湖北华磁电子科技有限公司
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