High-Bs low-power-consumption manganese-zinc soft magnetic ferrite material and preparation method thereof

A soft ferrite, power-consuming manganese-zinc technology, applied in magnetic materials, inductance/transformer/magnet manufacturing, magnetic objects, etc. Cost requirements, the effect of meeting the temperature rise

Inactive Publication Date: 2020-12-04
WUXI SPINEL MAGNETICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a manganese-zinc soft magnetic ferrite material with high Bs and low power consumption and its preparation method, aiming to solve the problem of high power loss of the magnetic core, and such high power loss also limits the application problem of its own high Bs characteristic

Method used

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  • High-Bs low-power-consumption manganese-zinc soft magnetic ferrite material and preparation method thereof
  • High-Bs low-power-consumption manganese-zinc soft magnetic ferrite material and preparation method thereof
  • High-Bs low-power-consumption manganese-zinc soft magnetic ferrite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Mix the raw materials composed of 59.5mol% ferric oxide, 20.1mol% manganese oxide, 16.2mol% zinc oxide, and 4.2mol% lithium carbonate in a sand mill for 1 hour, and after drying, under 10Mpa pressure Press it into a round cake with an outer diameter of 100 mm, and then pre-fire it at 850 ° C for 2 to 4 hours. Taking the powder quality after calcining as a benchmark, add auxiliary components in the above calcined material, the auxiliary components (ppm) added are: CaCO of 500ppm, ZrO of 150ppm, Co of 800ppm O Niobium pentoxide of 300ppm. Then carry out secondary sanding for 100 minutes, and dry the secondary sanding slurry for particle size testing. SMD is 0.9-1.1 μm, X50 is 1-1.15 μm, and X90 is less than 3 μm. After adding PVA, carry out spray granulation, and the shape is Φ25* Sintering of 15*8 standard toroidal magnetic cores: holding temperature 1250°C; from 600°C to the temperature of the holding section, the heating rate is 5°C / min; between 850°C and 1150°C, the o...

Embodiment 2

[0022] Mix the raw materials composed of 60.5mol% ferric oxide, 21.4mol% manganese oxide, 14.5mol% zinc oxide, and 3.6mol% lithium carbonate in a sand mill for 1 hour, after drying, under 10Mpa pressure Press it into a round cake with an outer diameter of 100 mm, and then pre-fire it at 850 ° C for 2 to 4 hours. Taking the powder quality after calcining as a benchmark, add auxiliary components in the above calcined material, the auxiliary components (ppm) added are: CaCO of 500ppm, ZrO of 150ppm, Co of 800ppm O Niobium pentoxide of 300ppm. Then carry out secondary sanding for 100 minutes, and dry the secondary sanding slurry for particle size testing. SMD is 0.9-1.1 μm, X50 is 1-1.15 μm, and X90 is less than 3 μm. After adding PVA, carry out spray granulation, and the shape is Φ25* Sintering of 15*8 standard toroidal magnetic cores: holding temperature 1250°C; from 600°C to the temperature of the holding section, the heating rate is 5°C / min; between 850°C and 1150°C, the oxyge...

Embodiment 3

[0024] Mix the raw materials composed of 60.1mol% ferric oxide, 22.1mol% manganese oxide, 15.8mol% zinc oxide, and 2.0mol% lithium carbonate in a sand mill for 1 hour, and after drying, under 10Mpa pressure Press it into a round cake with an outer diameter of 100 mm, and then pre-fire it at 850 ° C for 2 to 4 hours. Taking the powder quality after calcining as a benchmark, add auxiliary components in the above calcined material, the auxiliary components (ppm) added are: CaCO of 500ppm, ZrO of 150ppm, Co of 800ppm O Niobium pentoxide of 300ppm. Then carry out secondary sanding for 100 minutes, and dry the secondary sanding slurry for particle size testing. SMD is 0.9-1.1 μm, X50 is 1-1.15 μm, and X90 is less than 3 μm. After adding PVA, carry out spray granulation, and the shape is Φ25* Sintering of 15*8 standard toroidal magnetic cores: holding temperature 1250°C; from 600°C to the temperature of the holding section, the heating rate is 5°C / min; between 850°C and 1150°C, the o...

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Abstract

The invention is applicable to the technical field of soft magnetic ferrite materials, and provides a high-Bs low-power-consumption manganese-zinc soft magnetic ferrite material and a preparation method thereof. The high-Bs low-power-consumption manganese-zinc soft magnetic ferrite material comprises 55.4-60.5 mol% of ferric oxide, 15.3-22.5 mol% of manganese oxide, 10.5-17.6 mol% of zinc oxide and 2.0-5 mol% of lithium carbonate. The soft magnetic ferrite material has the characteristics of high Bs and low power consumption, the high Bs characteristic can be fully utilized, and the temperature rise can also be met. Meanwhile, the material cost is far lower than that of a magnetic powder core material, and the performance and cost requirements of the high-power high-power-density power transformer design can be better met.

Description

technical field [0001] The invention belongs to the technical field of soft ferrite materials, and in particular relates to a manganese-zinc soft ferrite material with high Bs and low power consumption and a preparation method thereof. Background technique [0002] With the continuous miniaturization of electronic products, the corresponding power supply must achieve high power density design. To achieve high power density of the power supply, the miniaturization and flattening of the magnetic core in electronic components is the key. In order to realize the miniaturization and flattening of the magnetic core and the high power density design of the power supply, magnetic materials with high Bs and low loss are required. [0003] In some high-power transformer design fields such as new energy photovoltaic inverters and charging piles, it is necessary to consider both small-volume design and temperature-rise design. The saturation magnetic flux density Bs of conventional po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/38H01F41/02H01F1/34C04B35/626C04B35/634C04B35/64
CPCC04B35/2616C04B35/6261C04B35/63416C04B35/64C04B2235/3208C04B2235/3244C04B2235/3251C04B2235/3275C04B2235/6562C04B2235/6584H01F1/344H01F41/02
Inventor 陈俊
Owner WUXI SPINEL MAGNETICS
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