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Preparation method of ultrahigh-Bs low-loss manganese zinc ferrite material for cloud computing

A manganese-zinc ferrite and low-loss technology, which is applied in the field of preparation of ultra-high Bs and low-loss manganese-zinc ferrite materials for cloud computing, can solve unfavorable saturation magnetic induction intensity, low sintered density of products, and decreased material resistivity, etc. Problems, achieve the effect of reducing volume and loss, reducing loss, and reducing sintering temperature

Pending Publication Date: 2021-07-30
麦格磁电科技(珠海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the one hand, as the iron content increases, the resistivity of the material will decrease, which will lead to an increase in loss; on the other hand, as the iron content increases, the inside of the manganese-zinc ferrite grains will be easily closed during the sintering process. Oxygen vacancies in the formula lead to low sintered density of the product, which is not conducive to improving the saturation magnetic induction of the product

Method used

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  • Preparation method of ultrahigh-Bs low-loss manganese zinc ferrite material for cloud computing
  • Preparation method of ultrahigh-Bs low-loss manganese zinc ferrite material for cloud computing

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preparation example Construction

[0038] In the first aspect, the embodiment of the present application also provides a method for preparing an ultra-high Bs low-loss manganese-zinc ferrite material for cloud computing, such as figure 1 shown, including the following steps:

[0039] Step S10, Fe 2 o 3 , ZnO, Mn 3 o 4 Mixing to obtain a precursor material, the precursor material includes 62.0mol% to 66.0mol% of Fe 2 o 3 , 17.0mol%~19.0mol% of ZnO and the balance of Mn 3 o 4 and performing wet ball milling after mixing the precursor material, water and binder to obtain the first slurry;

[0040] Step S20, performing spray granulation on the first slurry to obtain a first granular material;

[0041] Step S30, pre-sintering the first granular material to obtain a second granular material;

[0042] Step S40, mixing the second granular material, water, binder and additives and performing wet ball milling to obtain a second slurry, wherein the additives include a mass percentage of the second granular materi...

Embodiment 1

[0097] Ingredients: Fe 2 o 3 The content of ZnO is 62.5mol%, the content of ZnO is 18.5mol%, and the rest is Mn 3 o 4 Proceed with the batching of the main ingredients. The doped oxide includes 150-400ppm of CaO and 80-250ppm of SiO in terms of mass fraction 2 , 200~600ppm V 2 o 5 , 200~450ppm of SnO 2 , 100~350ppm TiO 2 Dosing of additives.

[0098] Feeding and mixing: In the process of feeding, half of the Fe is fed first 2 o 3 , after feeding ZnO and Mn 3 o 4 , and cast the other half Fe 2 o 3 , mixing the materials evenly, wet grinding and sand grinding to obtain the first slurry; spraying and granulating the first slurry to obtain the spherical first granular material.

[0099] The first granular material is sintered in a segmented atmosphere, the pre-fired temperature is controlled at 900-980°C, kept for 2 hours, and the sintering method is oxidized at 800-600°C in the cooling section, and the oxygen content is controlled at 21-21. 25%, the material fully ...

Embodiment 2

[0104] According to the preparation method of embodiment 1, sample S2 is obtained, and the difference from embodiment 1 is that during batching, Fe 2 o 3 The content of ZnO is 65mol%, the content of ZnO is 17.5mol%, and the rest is Mn 3 o 4 and doped oxides.

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Abstract

The invention provides a preparation method of an ultrahigh-Bs low-loss manganese zinc ferrite material for cloud computing. The method comprises the steps of mixing Fe2O3, ZnO and Mn3O4 to obtain a precursor material, mixing the precursor material, water and an adhesive, and carrying out wet ball milling to obtain first slurry; performing spray granulation on the first slurry to obtain a first granular material; pre-sintering the first granular material to obtain a second granular material; mixing the second granular material, water, an adhesive and an additive, and performing wet ball milling to obtain second slurry; performing spray granulation on the second slurry to obtain a third granular material, and pressing the third granular material into an annular magnetic core green body; and carrying out segmented sintering on the annular magnetic core green body. According to the preparation method provided by the embodiment of the invention, the saturation flux density of the manganese zinc ferrite material can be improved, and the loss is reduced.

Description

technical field [0001] The application relates to the technical field of soft magnetic ferrite, in particular to a preparation method of an ultra-high Bs low-loss manganese-zinc ferrite material for cloud computing. Background technique [0002] With the rapid development of electronic information technology, cloud computing data centers will become larger and larger in the future, and many new requirements are put forward for servers, such as space saving and energy consumption reduction. In order to meet the new requirements of the server, such as saving space and reducing energy consumption, the electronic components composed of it are developing in the direction of miniaturization and low loss. DC-DC converters are used for the core voltage of multimedia coprocessors and are an important part of server components. Without changing the working conditions of the components, the ferrite material with high saturation magnetic induction helps to reduce the volume of the magn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622C04B35/63
CPCC04B35/2633C04B35/622C04B35/6303C04B2235/3272C04B2235/3263C04B2235/3284C04B2235/3208C04B2235/3418C04B2235/3239C04B2235/3293C04B2235/3232C04B2235/602C04B2235/5436C04B2235/656C04B2235/6567C04B2235/6584C04B2235/658C04B2235/6565
Inventor 陈旭彬刘志坚尉晓东
Owner 麦格磁电科技(珠海)有限公司