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Manganese zinc ferrite with high magnetic conductivity and high impedance and preparation method thereof

A technology of manganese-zinc ferrite and high magnetic permeability, which is applied in the manufacture of inductors/transformers/magnets, magnetic objects, magnetic materials, etc., can solve the problems of reducing the utilization rate of electric energy, and the circuit cannot reach the maximum power output state, etc. Achieve the effects of promoting grain growth, broadening applicable working conditions, and improving magnetic permeability and impedance

Active Publication Date: 2022-03-18
深圳信义磁性材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to considering the frequency characteristics of the magnetic permeability, the impedance of the device must also be considered in the application. The impedance of the magnetic core will affect the impedance matching of the circuit. If the impedance does not match, the circuit will not reach the maximum power output state, thereby reducing the power utilization.

Method used

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  • Manganese zinc ferrite with high magnetic conductivity and high impedance and preparation method thereof
  • Manganese zinc ferrite with high magnetic conductivity and high impedance and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A high-permeability and high-impedance manganese-zinc ferrite is prepared from the following raw materials in parts by weight: Fe 2 o 3 40 parts, MnO10 parts, ZnO10 parts, Co 2 o 3 0.5 parts, SnO 2 1 copy, V 2 o 5 1 part, Nano Ti&MoO 3 0.5 servings.

[0027] Among them, Fe as the main functional component 2 o 3 The purity of MnO, MnO and ZnO is not lower than 98wt%.

[0028] The nano-Ti&MoO 3 The preparation method is as follows: take 5ml of butyl titanate, 0.5g of urea, and 40ml of ammonia water, mix and stir for 1 hour, then place it in a reaction kettle and react for 3 hours at 120°C. After the reaction, cool and centrifuge at a speed of 3000r / min Collect the precipitate for 5 minutes; take the precipitate and ammonium molybdate tetrahydrate and mix them evenly, put them into a planetary ball mill, mill for 24 hours at a speed of 200r / min, and then put them in a tube furnace at 300°C for 2 hours to obtain nano Ti&MoO 3 .

[0029] A preparation method of ...

Embodiment 2

[0039] A high-permeability and high-impedance manganese-zinc ferrite is prepared from the following raw materials in parts by weight: Fe 2 o 3 45 parts, MnO20 parts, ZnO20 parts, Co 2 o 3 1 part, SnO 2 1 copy, V 2 o 5 1 part, Nano Ti&MoO 3 0.7 parts.

[0040] Among them, Fe as the main functional component 2 o 3 The purity of MnO, MnO and ZnO is not lower than 98wt%.

[0041] The nano-Ti&MoO 3 The preparation method is as follows: take 10ml of butyl titanate, 1g of urea, and 50ml of ammonia water, mix and stir for 2 hours, then place it in a reaction kettle and react for 4 hours at 130°C. After the reaction, cool and centrifuge at a speed of 5000r / min for 10min , collect the precipitate; take the precipitate and ammonium molybdate tetrahydrate and mix them evenly, put them into a planetary ball mill, mill for 24 hours at a speed of 300r / min, and then put them in a tube furnace at 300°C for 2 hours to obtain nano Ti&MoO 3 .

[0042] A preparation method of high mag...

Embodiment 3

[0052] A high-permeability and high-impedance manganese-zinc ferrite is prepared from the following raw materials in parts by weight: Fe 2 o 3 50 parts, MnO15 parts, ZnO15 parts, Co 2 o 3 1.5 parts, SnO 2 1.5 parts, V 2 o 5 1.5 parts, Nano Ti&MoO 3 1 serving.

[0053] Among them, Fe as the main functional component 2 o 3 The purity of MnO, MnO and ZnO is not lower than 98wt%.

[0054] The nano-Ti&MoO 3 The preparation method is as follows: take 10ml of butyl titanate, 1g of urea, and 50ml of ammonia water, mix and stir for 2 hours, then place it in a reaction kettle and react for 6 hours at 140°C. After the reaction, cool and centrifuge at a speed of 5000r / min for 10min , collect the precipitate; take the precipitate and ammonium molybdate tetrahydrate and mix them evenly, put them into a planetary ball mill, mill for 24 hours at a speed of 300r / min, and then put them in a tube furnace at 300°C for 2 hours to obtain nano Ti&MoO 3 .

[0055] A preparation method of...

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Abstract

The invention discloses high-permeability high-impedance manganese zinc ferrite and a preparation method thereof, and belongs to the technical field of magnetic materials. The novel ferrite material with high magnetic conductivity and high impedance is obtained by optimizing the raw material composition proportion of the main material and the auxiliary material and adjusting the ball-milling sintering process. A nano Tiamp; by doping MoO3, the microstructure of the ferrite can be improved on the whole, a compact structure is formed in the sintering process, pores are reduced, the reaction area is enlarged, the reaction rate is increased, grain growth is promoted, and the magnetic conductivity and impedance are improved. The obtained ferrite material has a high impedance value within the high-frequency range of 1-100 MHz, the applicable working conditions of the manganese-zinc ferrite are effectively widened, the practicability is high, and the market prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of magnetic materials, and in particular relates to a manganese-zinc ferrite with high magnetic permeability and high resistance and a preparation method thereof. Background technique [0002] MnZn ferrite is made of manganese ferrite MnFe 2 o 4 , Zinc ferrite ZnFe 2 o 4 and a small amount of Fe 2 o 3 A class of solid solutions with a spinel structure. Among them, the high permeability MnZn ferrite material is an important branch of MnZn ferrite. [0003] The main application fields of high permeability ferrite materials include common mode filters, broadband transformers, communication equipment and signal transmission equipment such as electromagnetic compatibility and anti-electromagnetic interference (EMI). In addition to considering the frequency characteristics of the magnetic permeability, the impedance of the device must also be considered in the application. The impedance of the magnetic core...

Claims

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Application Information

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IPC IPC(8): C04B35/38C04B35/622C04B35/626H01F1/03H01F1/34H01F41/02
CPCC04B35/265C04B35/622H01F1/0315H01F1/344H01F41/02C04B35/62605C04B2235/3262C04B2235/3284C04B2235/3275C04B2235/3293C04B2235/3239C04B2235/404C04B2235/3256C04B2235/6562C04B2235/6567C04B2235/96
Inventor 刘立新
Owner 深圳信义磁性材料有限公司