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Manganese-zinc ferrite with high BS, High ZN and excellent ultra-wide-band characteristic and preparation method thereof

A manganese-zinc ferrite, excellent technology, applied in the field of magnetic materials and its preparation, can solve the problems of insufficient Curie temperature and saturation magnetic induction intensity characteristics, inability to maximize the comprehensive performance of materials, and low saturation magnetic induction intensity, etc., to achieve expanded use field, the advantage of enhancing the material, and the effect of excellent widescreen characteristics

Active Publication Date: 2017-11-03
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Many companies have launched broadband high-impedance materials with a magnetic permeability of 10,000, but there are shortcomings in some indicators, which cannot maximize the overall performance of the material
For example: 3E10 launched by Feici Company has high saturation magnetic induction intensity, high Curie temperature (≥130°C) and broadband characteristics, but the impedance characteristics are not enough; JFE's MA100 material has high impedance, but the Curie temperature and saturation magnetic induction Insufficient strength characteristics; TDK's anti-EMI inductors use HS10, which has good frequency characteristics and impedance characteristics, and the magnetic permeability reaches about 7000 at 300kHz, but there are shortcomings such as low saturation magnetic induction.

Method used

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  • Manganese-zinc ferrite with high BS, High ZN and excellent ultra-wide-band characteristic and preparation method thereof
  • Manganese-zinc ferrite with high BS, High ZN and excellent ultra-wide-band characteristic and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0033] A combination of high T C High B S High Z N Manganese-zinc ferrite with excellent broadband characteristics, which includes main materials and auxiliary materials, the main materials are composed of the following components in molar percentages: 62.8 mol% of ferric oxide, 10.5 mol% of zinc oxide, and 26.7 mol% of manganese monoxide; Based on the total mass of the main material, the addition amount of each component in the auxiliary material is 100 ppm of calcium oxide, 100 ppm of bismuth oxide and 600 ppm of dicobalt trioxide.

[0034] A combination of high T C High B S High Z N And the preparation method of the manganese zinc ferrite of excellent broadband characteristic, comprises the following steps:

[0035] a) material preparation: prepare the main material and auxiliary materials respectively according to the above formula;

[0036] b) main ingredient mixing: ball mill wet mixing after mixing each raw material in the main ingredient, and make powder after dr...

Embodiment 2

[0048] A combination of high T C High B S High Z N Manganese-zinc ferrite with excellent broadband characteristics, which includes main materials and auxiliary materials, the main materials are composed of the following components in molar percentages: 66.3 mol% of ferric oxide, 14.5 mol% of zinc oxide, and 19.2 mol% of manganese monoxide; Based on the total mass of the main material, the addition amount of each component in the auxiliary material is 600ppm of calcium oxide, 600ppm of bismuth oxide, 300ppm of molybdenum oxide, 300ppm of niobium pentoxide, and 600ppm of dicobalt trioxide.

[0049] A combination of high T C High B S High Z N And the preparation method of the manganese zinc ferrite of excellent broadband characteristic, comprises the following steps:

[0050] a) material preparation: prepare the main material and auxiliary materials respectively according to the above formula;

[0051] b) main ingredient mixing: ball mill wet mixing after mixing each raw ma...

Embodiment 3

[0063] A combination of high T C High B S High Z N Manganese-zinc ferrite with excellent broadband characteristics, which includes main materials and auxiliary materials, the main materials are composed of the following components in molar percentages: 52.37 mol% of ferric oxide, 20.59 mol% of zinc oxide, and 27.04 mol% of manganese monoxide; Based on the total mass of the main material, the addition amount of each component in the auxiliary material is 200ppm of calcium oxide, 300ppm of bismuth oxide, 100ppm of molybdenum oxide, 100ppm of niobium pentoxide, and 400ppm of dicobalt trioxide.

[0064] A combination of high T C High B S High Z N And the preparation method of the manganese zinc ferrite of excellent broadband characteristic, comprises the following steps:

[0065] a) material preparation: prepare the main material and auxiliary materials respectively according to the above formula;

[0066] b) main ingredient mixing: ball mill wet mixing after mixing each raw...

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Abstract

The invention belongs to the technical field of magnetic materials and preparation thereof. The invention discloses a manganese-zinc ferrite with high BS, high ZN and excellent ultra-wide-band characteristic and a preparation method thereof. The manganese-zinc ferrite comprises a main material and an auxiliary material, wherein the main material is prepared from iron sesquioxide, zinc oxide and manganese monoxide; the auxiliary material is prepared from calcium oxide, bismuth oxide, molybdenum oxide, niobium pentoxide and cobalt sesquioxide; the preparation method comprises the steps of preparing materials, mixing the main material and the auxiliary material, pre-burning the main material, adding the auxiliary material, performing secondary ball milling, performing granulation molding and sintering. The prepared manganese-zinc ferrite has the characteristics of high Curie temperature, high saturation flux density, high impedance performance and excellent ultra-wide-band characteristic, the permeability at 300kHz is 9,000 or more, the permeability within 300kHz does not attenuate basically, an excellent wide-band characteristic is achieved, and the advantages of the material are further improved.

Description

technical field [0001] The invention relates to the technical field of magnetic materials and their preparation, in particular to a high B S , High Z N Manganese zinc ferrite with excellent broadband characteristics and a preparation method thereof. Background technique [0002] Soft magnetic ferrite materials are mainly divided into manganese-zinc ferrite, nickel-zinc ferrite, magnesium-zinc ferrite and lithium-zinc ferrite, among which manganese-zinc ferrite accounts for more than 70%. With the rapid development of modern electronic technology, electronic devices are developing in the direction of miniaturization, which requires more and more demand for soft ferrite, the most widely used in the field of electronic information, and higher performance requirements, including high magnetic ferrite Conductivity (μi), high impedance (Z N ), high saturation magnetic induction (B S ), high Curie temperature (T C ), anti-electromagnetic interference (EMI) performance and broa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622H01F1/34
Inventor 朱航飞王国光严密沈冠群王朝明白国华
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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