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A kind of broadband, five high-performance soft magnetic ferrite material and preparation method thereof

A soft ferrite, high-performance technology, applied in the direction of magnetic materials, inductance/transformer/magnet manufacturing, magnetic objects, etc., can solve the problems of low Curie temperature, no broadband high impedance characteristics, high magnetic permeability, etc. Achieve the effects of high Curie temperature, high magnetic permeability, and high saturation magnetic flux density

Active Publication Date: 2022-02-22
湖北微硕电子科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This material has high magnetic permeability and high Bs characteristics, and the Curie temperature is relatively low, and it does not have broadband and high impedance characteristics; the patent with the authorized announcement number of CN108264340A discloses a manganese zinc ferrite material with high Curie temperature and high magnetic permeability. and its preparation method, the material has an initial magnetic permeability>7000 at 25°C; a Curie temperature Tc>200°C; a saturation magnetic flux density Bs≥490mT (25°C); the material has high Curie temperature and high permeability characteristics, but The initial permeability is only 7000, which does not reflect the characteristics of broadband and high impedance

Method used

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  • A kind of broadband, five high-performance soft magnetic ferrite material and preparation method thereof
  • A kind of broadband, five high-performance soft magnetic ferrite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A broadband, five high-performance soft ferrite material and a preparation method thereof, comprising the steps of:

[0039] (1) primary ball milling of raw materials: according to the formula 51.8mol% Fe 2 o 3 , 29mol% Mn 3 o 4 , 19.2mol% ZnO is weighed and mixed, and the mixture is added to a ball mill for mixing and ball milling to form a powder. Among them, the ratio of material: zirconium balls: deionized water is 1:5:1.5, and the obtained powder is obtained using a natural gas rotary kiln Pre-calcined at 900° C. for 4 hours under air conditions to obtain ferrite powder with a synthesis degree of spinel of 30%.

[0040] (2) secondary ball milling, adding 300ppmNb to the powder obtained in step (1) 2 o 5 、300ppm Bi 2 o 3 , 100ppm Co 2 o 3 , 100ppmZrO 2 , 50ppmTiO 2 , 50ppmSnO 2 Mix evenly, and put the mixed material into the ball mill tank for secondary ball milling. The ball milling time is 3 hours, the ball milling speed is 241 rpm, and the particle si...

Embodiment 2

[0044] A broadband, five high-performance soft ferrite material and a preparation method thereof, comprising the steps of:

[0045] (2) primary ball milling of raw materials: according to the formula 52mol% Fe 2 o 3 , 28mol% Mn 3 o 4 , 20mol% ZnO was weighed and mixed, and the mixture was added to a ball mill for mixing and ball milling to form a powder. Among them, the ratio of material: zirconium balls: deionized water was 1:5:1.5, and the obtained powder was processed in a natural gas rotary kiln. Under the air condition, the temperature is 900° C. for 4 hours, and the ferrite powder with the synthesis degree of spinel of 30% is obtained.

[0046] (2) Secondary ball milling, adding 300ppmNb to the powder obtained in step (1) 2 o 5 , 100ppmB 2 o 3 , 100ppm Co 2 o 3 , 50ppmZrO 2 , 50ppmTiO 2 , 50ppmSnO 2 Mix evenly, and put the mixed material into the ball mill tank for secondary ball milling. The ball milling time is 3 hours, the ball milling speed is 241 rpm, an...

Embodiment 3

[0050] A broadband, five high-performance soft ferrite material and a preparation method thereof, comprising the steps of:

[0051] (3) primary ball milling of raw materials: according to the formula 52.5mol% Fe 2 o 3 , 28mol% Mn 3 o 4 , 19.5mol% ZnO is weighed and mixed, and the mixture is added to a ball mill for mixing and ball milling to form a powder. Among them, the ratio of material: zirconium balls: deionized water is 1:5:1.5, and the obtained powder is obtained using a natural gas rotary kiln Pre-calcined at 900° C. for 4 hours under air conditions to obtain ferrite powder with a synthesis degree of spinel of 30%.

[0052] (2) Secondary ball milling, adding 300ppmNb to the powder obtained in step (1) 2 o 5 , 200ppmV 2 o 5 , 50ppmZrO 2 , 50ppmTiO 2 , 100ppmSnO 2 , 100ppmCa 0.8 Ba 0.2 Cu 3 Ti 4 o 12 , 50ppmCaCu 3 Ti 3.98 f 0.02 o 12 Mix evenly, and put the mixed material into the ball mill tank for secondary ball milling. The ball milling time is 3 ho...

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Abstract

The invention belongs to the technical field of ferrite synthesis, including raw materials, displacing agents, dielectric agents and auxiliary additives, and the raw materials are Fe 2 o 3 , Mn 3 o 4 , a mixture of ZnO, the displacing agent includes one or more of cobalt oxide and zirconia, and the dielectric agent includes Ca 1‑x Ba x Cu 3 Ti 4 o 12 、CaCu 3 Ti 4‑y f y o 12 , Ca 1‑ x Ba x Cu 3 Ti 4‑y f y o 12 One or more of them, x and y in the general formula of the dielectric agent are respectively the molar content of Ba and Hf elements, wherein the value of x is 0-0.3, and the value of y is 0-0.05. This method adopts various Raw materials are doped with trace additives, and the low-temperature low-oxygen double-low sintering process is combined with the densification sintering process, which can not only achieve high magnetic permeability but also achieve broadband effects. The soft magnetic ferrite material formed by this method is simultaneously It has the effects of broadband, high saturation magnetic induction, high impedance, high Curie temperature and high magnetic permeability.

Description

technical field [0001] The invention belongs to the technical field of ferrite synthesis, in particular to a soft ferrite material with wide frequency and high performance and a preparation method thereof. Background technique [0002] High permeability ferrite is mainly used in broadband transformers, pulse transformers and anti-EMI devices in optical fiber communication and data network technology. The rapid development of communication technology and digital technology has put forward higher performance requirements for broadband pulse transformers, inductors, filters and other devices. The miniaturization and thinning of electronic components is the current development trend. Therefore, electronic components need to use various A magnetic core with comprehensive shape and performance; therefore, multi-functional ferrite materials with high magnetic permeability and high frequency, high impedance, high saturation magnetic flux density, and high Curie temperature are curre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/34H01F41/02
CPCH01F1/342H01F1/344H01F41/02
Inventor 林正崇姚木有苏荣佳谭福清郭皓
Owner 湖北微硕电子科技有限公司