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MnZn ferrite material with high magnetic conductivity and manufacturing method thereof

A technology of ferrite materials and high magnetic permeability, which is applied in the direction of magnetic properties of inorganic materials, can solve the problems of limiting the temperature range and anti-saturation performance of high magnetic permeability materials, achieve low cost, simple process, and meet market demand Effect

Active Publication Date: 2010-10-13
江门江益磁材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This limits the temperature range and saturation resistance of this high-permeability material

Method used

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  • MnZn ferrite material with high magnetic conductivity and manufacturing method thereof

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example 1

[0016] Using commercially available Fe 2 o 3 , Mn 3 o 4 , ZnO as the main component, 52.0mol% Fe 2 o 3 , 25.0mol% MnO (raw material is Mn 3 o 4 ) and 23.0mol% ZnO were placed in a sand mill and mixed for 1 hour, then taken out and placed in a drying oven for drying. Use a box-type resistance furnace to pre-fire for 2 hours at 800°C-900°C. Then put the pre-fired powder into the ball mill, and add auxiliary ingredients at the same time, the auxiliary ingredients include Bi 2 o 3 、MoO 3 , CaCO 3 , SiO 2 , the addition amount is respectively 0.04wt%, 0.04wt%, 0.05wt%, 0.01wt% of the total weight of the main component, and then add 60wt% of deionized water and 1wt% of the total weight of the main component The dispersant and 1wt% defoamer are ball milled together. Ball mill the powder until the average particle size is about 1.0±0.2 μm, after drying, add 8wt% polyvinyl alcohol aqueous solution to the powder based on the total weight of the powder after ball milling, mi...

Embodiment 2

[0020] Using commercially available Fe 2 o 3 , Mn 3 o 4 , ZnO as the main component, 52.0mol% Fe 2 o 3 , 25.2mol% MnO (raw material is Mn 3 o 4 ) and 22.8mol% ZnO were placed in a sand mill and mixed for 1 hour, then taken out and placed in a drying oven for drying. Use a box-type resistance furnace to pre-fire for 2 hours at 800°C-900°C. Then put the pre-fired powder into the ball mill, and add auxiliary ingredients at the same time, the auxiliary ingredients include Bi 2 o 3 、MoO 3 , CaCO 3 、Co 2 o 3, the addition amount is respectively 0.04wt%, 0.04wt%, 0.08wt%, 0.03wt% of the total weight of the main component, and then add 60wt% of deionized water and 1wt% of the total weight of the main component The dispersant and 1wt% defoamer are ball milled together. Ball mill the powder until the average particle size is about 1.0±0.2 μm, after drying, add 8wt% polyvinyl alcohol aqueous solution to the powder based on the total weight of the powder after ball milling, ...

Embodiment 3

[0023] Using commercially available Fe 2 o 3 , Mn 3 o 4 , ZnO as the main component, 53.0mol% Fe 2 o 3 , 25.0mol% MnO (raw material is Mn 3 o 4 ), 22.0mol% ZnO was placed in a sand mill and mixed for 1 hour, then taken out and placed in a drying oven for drying. Use a box-type resistance furnace to pre-fire for 2 hours at 800°C-900°C. Then put the pre-fired powder into the ball mill, and add auxiliary ingredients at the same time, the auxiliary ingredients include Bi 2 o 3 、MoO 3 , V 2 o 5 、TiO 2 , the addition amount is respectively 0.04wt%, 0.04wt%, 0.05wt%, 0.05wt% of the total weight of the main component, and then add 60wt% of deionized water and 1wt% of the total weight of the main component The dispersant and 1wt% defoamer are ball milled together. Ball mill the powder until the average particle size is about 1.0±0.2 μm, after drying, add 6 wt% polyvinyl alcohol aqueous solution to the powder based on the total weight of the powder after ball milling, mix ...

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Abstract

The invention provides an MnZn ferrite material with high magnetic conductivity, which comprises the following main components: 50 to 54mol% of ferric oxide calculated by Fe2O3, 22 to 30mol% of trimanganese tetroxide calculated by MnO, 20 to 24mol% of zinc oxide calculated by ZnO and auxiliary components selected from at least four of TiO2, Co2O3, V2O5, Bi2O3, MoO3, SiO2 and CaCO3. In the MnZn ferrite material with high magnetic conductivity, which is provided by the invention, the initial magnetic conductivity is greater than 15000, the Curie temperature is greater than 120 DEG C, and the normal-temperature saturation magnetic induction strength is greater than 410mT. The invention also provides a manufacturing method of the MnZn ferrite material with high magnetic conductivity, which comprises the steps of mixing, drying, pre-sintering, ball milling, granulating, pressing, forming and sintering. The method provided by the invention has the advantages of simple process and low cost.

Description

technical field [0001] The invention relates to a MnZn ferrite material and a manufacturing method thereof, in particular to a high magnetic permeability MnZn ferrite material and a manufacturing method thereof. Background technique [0002] With the development of society and the improvement of people's living standards, people's requirements for electrical equipment and telecommunication facilities are also getting higher and higher. Not only the performance of the product is required to be higher and higher, but also the volume of the product is required to be smaller and smaller, and the scope of application of the product is wider and wider. [0003] MnZn soft magnetic ferrite material with high Curie temperature, high saturation magnetic induction (Bs), and high magnetic permeability has the characteristics of high magnetic permeability, because the higher the magnetic permeability, the smaller the component volume, so the made of it The volume of the product will als...

Claims

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Application Information

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IPC IPC(8): H01F1/34B22F3/12B22F9/04C04B35/26C04B35/645
Inventor 汪南东李喜雄王家永黄爱萍豆小明谭福清冯则坤
Owner 江门江益磁材有限公司
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