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High magnetic permeability broadband high-impedance nickel-zinc soft magnetic ferrite material and preparation method thereof

A technology of soft magnetic ferrite and high magnetic permeability, which is applied in the direction of magnetism of inorganic materials, can solve the problems of large difference in impedance value of nickel-zinc ferrite magnetic ring, poor broadband characteristics of magnetic core impedance, etc., and achieve anti-external Strong interference ability, improved magnetic permeability and performance stability, and simple operation

Inactive Publication Date: 2019-04-26
湖南艾迪奥电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, in the nickel-zinc ferrite magnetic ring, due to the high content of ZnO, the content of NiO is relatively low, which leads to the deterioration of the impedance broadband characteristics of the magnetic core.
When the frequency of the application changes greatly, the impedance value of the above-mentioned nickel-zinc ferrite magnetic ring has a large difference

Method used

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  • High magnetic permeability broadband high-impedance nickel-zinc soft magnetic ferrite material and preparation method thereof

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Embodiment 1

[0031] This embodiment provides a method for preparing a nickel-zinc soft ferrite material with high magnetic permeability, broadband frequency and high impedance, which specifically includes the following steps:

[0032] S1: ingredients; the main ingredient Fe 2 o 3 , ZnO, NiO, CuO are calculated as: Fe 2 o 3 45 mol%, ZnO 25 mol%, NiO 10 mol%, CuO 10 mol%.

[0033] Among them, by increasing the content of ZnO in raw materials, reasonably setting Fe 2 o 3 The ratio of ZnO and ZnO can improve the magnetic permeability. After adding CuO, the raw materials can be mixed evenly, and the sintering temperature can be lowered, which is beneficial to the ferriteization of the product.

[0034] S2: Mixing materials; add the configured main ingredients into the intensive mixer, and mix at a speed of 1000r / min for 10 minutes to fully mix the materials evenly.

[0035] S3: pre-firing; put the mixed materials into the firing bowl and fully pre-fire in the orbital kiln to make pre-fi...

Embodiment 2

[0044] This embodiment provides a method for preparing a nickel-zinc soft ferrite material with high magnetic permeability, broadband frequency and high impedance, which specifically includes the following steps:

[0045] S1: ingredients; the main ingredient Fe 2 o 3 , ZnO, NiO, CuO are calculated as: Fe 2 o 3 50mol%, ZnO25mol%, NiO10mol%, CuO5mol%.

[0046] Among them, by increasing the content of ZnO in raw materials, reasonably setting Fe 2 o 3 The ratio of ZnO and ZnO can improve the magnetic permeability. After adding CuO, the raw materials can be mixed evenly, and the sintering temperature can be lowered, which is beneficial to the ferriteization of the product.

[0047] S2: Mixing materials; add the configured main ingredients into the intensive mixer, and mix at a speed of 1000r / min for 10 minutes to fully mix the materials evenly.

[0048] S3: pre-firing; put the mixed materials into the firing bowl and fully pre-fire in the orbital kiln to make pre-fired mate...

Embodiment 3

[0057] This embodiment provides a method for preparing a nickel-zinc soft ferrite material with high magnetic permeability, broadband frequency and high impedance, which specifically includes the following steps:

[0058] S1: ingredients; the main ingredient Fe 2 o 3 , ZnO, NiO, CuO are calculated as: Fe 2 o 3 45mol%, ZnO 30mol%, NiO 10mol%, CuO 6mol%.

[0059] Among them, by increasing the content of ZnO in raw materials, reasonably setting Fe 2 o 3 The ratio of ZnO and ZnO can improve the magnetic permeability. After adding CuO, the raw materials can be mixed evenly, and the sintering temperature can be lowered, which is beneficial to the ferriteization of the product.

[0060] S2: Mixing materials; add the configured main ingredients into the intensive mixer, and mix at a speed of 1000r / min for 10 minutes to fully mix the materials evenly.

[0061] S3: pre-firing; put the mixed materials into the firing bowl and fully pre-fire in the orbital kiln to make pre-fired m...

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Abstract

The invention discloses a high magnetic permeability broadband high-impedance nickel-zinc soft magnetic ferrite material which comprises main materials and additives, wherein the main materials comprise the following components in percentage by mole: 45-55mol% of Fe2O3, 25-35mol% of ZnO, 10-20mol% of NiO and 5-10mol% of CuO; the additives comprise the following components in percentage by mole: 0.5-5mol% of MgO, 0.5-9.5mol% of Co2O3 and 0.5-5mol% of CaCO3. The high magnetic permeability broadband high-impedance nickel-zinc soft magnetic ferrite material disclosed by the invention is high in magnetic permeability, wide in use frequency range and low in consumption, has magnetic permeability being up to 950 at 100kHz and 100mV, is capable of improving overall reliability of electronic equipment, meanwhile, has relatively high impedance at 60-500MHz, that is, being up to 1200omega or greater, has good external interference resistance in a high frequency environment, and is adaptable to severe environments.

Description

technical field [0001] The invention belongs to the technical field of ferrite materials, in particular to a nickel-zinc soft magnetic ferrite material with high magnetic permeability, wide frequency and high impedance and a preparation method thereof. Background technique [0002] Nickel-zinc ferrite magnetic ring is an anti-interference component commonly used in electronic devices, and it has a good suppression effect on high-frequency signal filtering. Electronic devices are developing toward miniaturization, which puts forward higher requirements for the magnetic properties of nickel-zinc ferrite magnetic materials. Since the increase of the magnetic permeability of nickel-zinc ferrite magnetic materials is conducive to the miniaturization of electronic devices, how to improve the magnetic permeability of nickel-zinc ferrite magnetic materials while maintaining good broadband and high impedance characteristics , has always been a research and development hotspot in the...

Claims

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Application Information

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IPC IPC(8): C04B35/30C04B41/83H01F1/36
CPCC04B35/2633C04B35/2625C04B41/009C04B41/488C04B41/83C04B2235/3206C04B2235/3275C04B2235/3281C04B2235/442C04B2235/608H01F1/36C04B41/4531
Inventor 毛佳
Owner 湖南艾迪奥电子科技有限公司