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A kind of soft magnetic material and its preparation method and application in automotive electronic system

A soft magnetic material, magnetic flux density technology, applied in the direction of inorganic material magnetism, inductance/transformer/magnet manufacturing, circuit, etc., to achieve the effect of high saturation magnetic flux density, uniform grain growth and low loss

Active Publication Date: 2022-01-11
RUYUAN DONGYANGGUANG MAGNETIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects and deficiencies of existing soft magnetic ferrite materials that cannot achieve low loss and high saturation magnetic flux density in the environment of -20°C to 140°C, and provide a soft magnetic material

Method used

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  • A kind of soft magnetic material and its preparation method and application in automotive electronic system
  • A kind of soft magnetic material and its preparation method and application in automotive electronic system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A soft magnetic material comprising the following main components: Fe 2 o 3 55.5mol%; MnO34.5mol%; ZnO10mol%; relative to the total weight of the main component, it also contains the following content of secondary components: 0.03wt% CaCO 3 , 0.08wt%TiO 2 , 0.03wt% Nb 2 o 5 , 0.02wt% ZrO 2 , 0.03wt%V 2 o 5 , 0.02wt% SnO, 0.35wt% Co 2 o 3 , 0.02wt% NiO.

[0040] Its preparation method comprises the following steps:

[0041] S1. Weigh the raw material of the main component, then add a certain proportion of deionized water in the sand mill for mixing and crushing, crush for 30 minutes, and circulate and mix for 10 minutes, then add a certain amount of PVA solution for spray granulation;

[0042] S2. Put the spray material into the pre-burning furnace, and heat it at 870°C for 3 hours for pre-burning;

[0043] S3. Add the following auxiliary components according to the weight percentage of the pre-fired material to the pre-fired material, and then put the powder ...

Embodiment 2

[0047] A soft magnetic material comprising the following main components: Fe 2 o 3 55.2mo1%; MnO34.8mo1%; ZnO10mo1%; Relative to the total weight of the main component, it also contains the following subcomponents: 0.03wt% CaCO 3 , 0.1wt%TiO 2 , 0.03wt%Nb 2 o 5 , 0.02wt% ZrO 2 , 0.03wt%V 2 o 5 , 0.013wt% SnO, 0.35wt% Co 2 o 3 , 0.05wt% NiO.

[0048] Its preparation method comprises the following steps:

[0049] S1. Weigh the raw material of the main component, then add a certain proportion of deionized water in the sand mill for mixing and crushing, crush for 30 minutes, and circulate and mix for 10 minutes, then add a certain amount of PVA solution for spray granulation;

[0050] S2. Put the spray material into the pre-burning furnace, and heat it at 850° C. for 3 hours to carry out pre-burning;

[0051] S3. Add the following auxiliary components according to the weight percentage of the pre-fired material to the pre-fired material, and then put the powder into the...

Embodiment 3

[0055] A soft magnetic material comprising the following main components: Fe 2 o 3 55.5mol%; MnO34.8mol%; ZnO9.7mol%; relative to the total weight of the main component, it also contains the following content of secondary components: 0.03wt% CaCO 3 , 0.1wt%TiO 2 , 0.03wt%Nb 2 o 5 , 0.02wt% ZrO 2 , 0.02wt%V 2 o 5 , 0.013wt% SnO, 0.4wt% Co 2 o 3 , 0.05wt% NiO.

[0056] Its preparation method comprises the following steps:

[0057] S1. Weigh the raw material of the main component, then add a certain proportion of deionized water in the sand mill for mixing and crushing, crush for 30 minutes, and circulate and mix for 10 minutes, then add a certain amount of PVA solution for spray granulation;

[0058] S2. Put the spray material into the pre-burning furnace, and heat it at 890° C. for 3 hours to carry out pre-burning;

[0059] S3. Add the following auxiliary components according to the weight percentage of the pre-fired material to the pre-fired material, and then put t...

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Abstract

The invention discloses a soft magnetic material, a preparation method thereof and an application in an automobile electronic system. Soft magnetic materials include main components and subcomponents, where the main component includes Fe 2 o 3 , MnO, ZnO, the mass percent of the secondary components is: CaCO 3 , V 2 o 5 , Nb 2 o 5 , SnO 2 ,Co 2 o 3 ,TiO 2 , ZrO 2 , NiO. The present invention obtains a material with low loss and high saturation magnetic flux at -20-140°C by setting specific components and their content ratios, the loss index has better wide temperature characteristics, and has high saturation magnetic flux Density, soft magnetic materials in the preparation process through the optimization of the powder ratio and the special segmental cooling sintering process, the performance of ultra-wide temperature, low power consumption and high saturation magnetic flux density is achieved. The product has wide temperature adaptability and can cope with the global The environment with large temperature difference is widely used in the field of automotive electronic systems to ensure stability.

Description

technical field [0001] The invention relates to the technical field of soft magnetic materials, and more specifically, to a soft magnetic material, a preparation method thereof and an application in an automotive electronic system. Background technique [0002] As an electronic functional material with excellent electrical properties and easy processing of different shapes and sizes, soft ferrite has gradually become the core component of automotive magnetic components. With the popularization of magnetic materials in automotive electronics, the global harsh environment has increasingly strict requirements on the ambient temperature of the magnetic core. In response to the low temperature at the two poles of the earth, the operating temperature of the magnetic core is required to be extended from the traditional 25°C to 120°C to - 20 ℃ ~ 140 ℃, under the premise that the saturation magnetic flux of the material does not decrease at this temperature, the loss is in a lower ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/26C04B35/622H01F1/36H01F41/02
CPCC04B35/2633C04B35/622H01F1/36H01F41/02C04B2235/3272C04B2235/3262C04B2235/3284C04B2235/3232C04B2235/3208C04B2235/3251C04B2235/3244C04B2235/3239C04B2235/3293C04B2235/3275C04B2235/3279C04B2235/602C04B2235/608C04B2235/656C04B2235/6567C04B2235/6584C04B2235/6583C04B2235/662C04B2235/77
Inventor 张凯傅膑刘培元孔令才谢振华陈创鑫余春成谭翔滨
Owner RUYUAN DONGYANGGUANG MAGNETIC MATERIAL
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