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Nanocrystalline MnZn Ferrite with High Saturation Magnetic Induction and Low Loss

A technology of magnetic induction and manganese zinc ferrite, which is applied in the direction of magnetic properties of inorganic materials, achieves the effects of broad application prospects, excellent comprehensive performance, low power consumption and resistivity

Active Publication Date: 2017-06-06
苏州天铭磁业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing Mn-Zn ferrite materials cannot fully meet the above requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The invention discloses a nanocrystalline manganese zinc ferrite with high saturation magnetic induction and low loss. The nanocrystalline manganese zinc ferrite is composed of a main component, an auxiliary component, a precipitant and a dispersion Agent composition; Wherein, the raw material of described main component and its mass percent are: FeSO 4 ·7H 2 O 45%, ZnSO 4 ·7H 2 O 23%, MnSO 4 4H 2 O 22%; the raw material and mass percent of the auxiliary components are: CuSO 4 ·5H 2 O 50%, CuO 15%, Fe 2 o 3 10%, NiO 25%; the precipitation agent is (NH 4 ) 2 C 2 o 4 ·H 2 O; The dispersant is polyethylene glycol.

[0016] The initial magnetic permeability of the nanocrystalline manganese zinc ferrite is 2300, the saturation magnetic induction at 25°C is 1200Bs / mT; the resistivity at 25°C is 1.3×106ρ / Ωm; Power consumption is 30kw / m 3 .

Embodiment 2

[0018] The invention discloses a nanocrystalline manganese zinc ferrite with high saturation magnetic induction and low loss. The nanocrystalline manganese zinc ferrite is composed of a main component, an auxiliary component, a precipitant and a dispersion Agent composition; Wherein, the raw material of described main component and its mass percent are: FeSO 4 ·7H 2 O 53%, ZnSO 4 ·7H 2 O 29%, MnSO 4 4H 2 O 18%; the raw material and mass percent of the auxiliary components are: CuSO 4 ·5H 2 O 55%, CuO 15%, Fe 2 o 3 18%, NiO 12%; the precipitation agent is (NH 4 ) 2 C 2 o 4 ·H 2 O; The dispersant is polyethylene glycol.

[0019] The initial magnetic permeability of the nanocrystalline MnZn ferrite is 2800, the saturation magnetic induction at 25°C is 1500Bs / mT; the resistivity at 25°C is 1.8×10 6 ρ / Ωm; the power consumption in the temperature range of 25~100℃ is 46kw / m 3 .

Embodiment 3

[0021] The invention discloses a nanocrystalline manganese zinc ferrite with high saturation magnetic induction and low loss. The nanocrystalline manganese zinc ferrite is composed of a main component, an auxiliary component, a precipitating agent and a Agent composition; Wherein, the raw material of described main component and its mass percent are: FeSO 4 ·7H 2 O 50%, ZnSO 4 ·7H 2 O 30%, MnSO 4 4H 2 O 20%; the raw material and mass percent of the auxiliary components are: CuSO 4 ·5H 2 O 40%, CuO 20%, Fe 2 o 3 16%, NiO 23%; the precipitation agent is (NH 4 ) 2 C 2 o 4 ·H 2 O; The dispersant is polyethylene glycol.

[0022] The initial magnetic permeability of the nanocrystalline manganese zinc ferrite is 2500, the saturation magnetic induction at 25°C is 1300Bs / mT; the resistivity at 25°C is 1.5×10 6 ρ / Ωm; the power consumption in the temperature range of 25~100℃ is 32kw / m 3 .

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PUM

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Abstract

The invention discloses nanocrystalline manganese zinc ferrite with high saturation flux density and low loss. The nanocrystalline manganese zinc ferrite includes main components, auxiliary components, a precipitant and a dispersing agent, wherein the main components include MnSO4.4H2O, FeSO4.7H2O and ZnSO4.7H2O; the auxiliary components include CuSO4.5H2O, CuO, Fe2O3 and NiO; the mass ratio of the main components to the auxiliary components to the precipitant to the dispersing agent is (6-8):(1-2):(0.5-0.8):(0.2-0.5). According to the invention, through reasonable matching of manganese, zinc and iron content, selection and matching of the auxiliary components, and the formula design, nanocrystalline manganese zinc ferrite is higher in performance than traditional materials, and is ultrahigh in saturation flux density, ultralow in power consumption and resistivity, and excellent in comprehensive performance, can fully satisfy the application demands for small size, light weight and multi-function, and has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of manganese-zinc ferrite, in particular to a nanocrystalline manganese-zinc ferrite with high saturation magnetic induction and low loss. Background technique [0002] Mn-Zn ferrite, also known as magnetic ceramics, is a soft ferrite material with a spinel structure, which has high magnetic permeability, high saturation magnetization, small coercive force, high resistivity, etc. Advantages, widely used in computer, communication, radar, space technology and household appliances and other fields. [0003] At present, with the development of scientific and technological information, power electronic devices are developing in the direction of miniaturization, thinning and multi-functionalization. Soft magnets have been more and more widely used in these devices, and have become an important tool for reducing volume, reducing power consumption, etc. Indispensable component. However, the existing Mn-Zn ferrite...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/36C04B35/26
Inventor 魏瑞明戴建中邹仲鹤俞利忠
Owner 苏州天铭磁业有限公司