Ultra-high frequency wave-absorbing and wave-filtering manganese-zinc ferrite and preparation method thereof

A manganese-zinc ferrite, ultra-high frequency technology, used in inductor/transformer/magnet manufacturing, electrical components, circuits, etc.

Inactive Publication Date: 2019-04-30
SUZHOU GUANDA MAGNET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main technical problem to be solved by the present invention is to provide a manganese-zinc ferrite for ultra-high frequency wave-absorbing filter and its preparation method, which can solve the problems of existing ferrite materials in terms of magnetic permeability, Curie temperature and mechanical strength of magnetic blocks, etc. deficiencies

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An ultra-high frequency wave-absorbing filter manganese-zinc ferrite, comprising: a main component and an auxiliary component, the main component includes the following molar percentage components: 52.0 mol% Fe 2 o 3 , 12.5mol% of ZnO, 35.5mol% of MnO; the auxiliary component is CaCO 3 、 Bi 2 o 3 , Nb 2 o 5 、Co 2 o 3 The mixture, and the total weight of the auxiliary components is 0.25wt% of the total weight of the main components.

[0024] The preparation method of the above-mentioned ultra-high frequency wave-absorbing filter manganese-zinc ferrite comprises the following steps:

[0025] (1) Mixing of ingredients: Weigh the main component of the above formula; take 80wt% deionized water of the total weight of the main component and mix it in a sand mill, and then add a PVA aqueous solution with a concentration of 3‰, spray granulation Obtain granular powder;

[0026] (2) Pre-burning: Transfer the granular powder obtained in step (1) into a rotary kiln for pre...

Embodiment 2

[0032] An ultra-high frequency wave-absorbing filter manganese-zinc ferrite, comprising: a main component and an auxiliary component, the main component includes the following molar percentage components: 54.0 mol% Fe 2 o 3 , 14.5mol% of ZnO, 31.5mol% of MnO; the auxiliary component is CaCO 3 、 Bi 2 o 3 , Nb 2 o 5 、Co 2 o 3、 MoO 3 , a mixture of CuO, and the total weight of the auxiliary components is 0.5wt% of the total weight of the main components.

[0033] The preparation method of the above-mentioned ultra-high frequency wave-absorbing filter manganese-zinc ferrite comprises the following steps:

[0034] (1) Mixing of ingredients: Weigh the main components of the above formula; take 90wt% deionized water of the total weight of the main components and mix them in a sand mill, and then add PVA aqueous solution with a concentration of 3‰, spray granulation Obtain granular powder;

[0035] (2) Pre-burning: Transfer the granular powder obtained in step (1) into a rot...

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Abstract

The invention discloses an ultra-high frequency wave-absorbing and wave-filtering manganese-zinc ferrite and a preparation method thereof. The manganese-zinc ferrite includes a principal component andan auxiliary component. The principal component includes the following components by the molar percentage: 52.0 mol%-54.5 mol% of Fe2O3, 11.5 mol%-16.5 mol% of ZnO, and the balance being MnO; the auxiliary component includes three or more of CaCO3, Bi2O3, Nb2O5, Co2O3, MoO3 and CuO, and the total weight of the auxiliary component is 0.15 wt%-0.5 wt% of the total weight of the principal component.The preparation method includes the steps of ingredient mixing, pre-sintering, crushing, spray granulation, blank forming, and sintering. Through the method, the material has high magnetic conductivity, high Curie temperature and mechanical strength through the special doping process and a sintering process curve, and can meet the environmental adaptability design standard of vehicle-mounted electronic products.

Description

technical field [0001] The invention relates to the field of manganese-zinc ferrite, in particular to an ultra-high-frequency wave-absorbing filter manganese-zinc ferrite and a preparation method thereof. Background technique [0002] At present, the development trend of electronic components is miniaturization and light weight. High-permeability manganese-zinc ferrite material has high initial permeability, low loss, wide application temperature range and high inductance and high impedance under high-frequency conditions, which can significantly improve filter performance and facilitate the miniaturization of electronic components , lightweight, in line with the development trend of electronic components. At the same time, when high-frequency high-performance manganese-zinc ferrite materials are used, the Q value of components is high and the loss is small. Therefore, there is a large demand for ultra-high frequency absorbing filter ferrite materials at home and abroad, an...

Claims

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Application Information

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IPC IPC(8): C04B35/38C04B35/622H01F1/01H01F41/00
CPCC04B35/2633C04B35/265C04B35/622C04B2235/3208C04B2235/3251C04B2235/3256C04B2235/3262C04B2235/3275C04B2235/3281C04B2235/3284C04B2235/3298C04B2235/608C04B2235/656C04B2235/6583H01F1/01H01F41/00
Inventor 柯宇翔
Owner SUZHOU GUANDA MAGNET
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