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High-frequency high-energy-efficiency conversion mnzn ferrite and preparation method thereof

A high-efficiency, ferrite technology, applied in the field of MnZn ferrite material preparation, achieves the effects of good economic benefits, low power consumption, and small grain size

Active Publication Date: 2021-04-02
CHANGSHU HAOBO ELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem mainly solved by the present invention is to provide a high-frequency high-energy-efficiency conversion MnZn ferrite and its preparation method, which can solve the above-mentioned problems existing in the existing MnZn ferrite materials

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  • High-frequency high-energy-efficiency conversion mnzn ferrite and preparation method thereof

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Embodiment 1

[0037] The invention discloses a high-frequency high-energy-efficiency conversion MnZn ferrite, which includes a main component and an added component whose molar percentage sum is 100%; wherein, the main component includes the following molar percentage components Points: Fe 2 o 3 53-55 mol%, MnO 37.2-38.5 mol%, and the rest 6.5-9.5 mol% ZnO, the sum of the molar percentages of the main components is 100%.

[0038] The added components include the following components in weight percentage: CaCO 3 0.05~0.2wt%, SiO 2 0.005~0.2wt%, Nb 2 o 5 0~0.05wt%, Ta 2 o 5 0.05~0.15wt%.

[0039] Because the purity of the raw material affects the microstructure and performance of the product, the purity of the main components used in the present invention is higher, wherein the Fe 2 o 3 Purity ≥ 99.5%, SiO in it 2 The content of ≤100ppm, P 2 o 5 content≤30ppm, Al 2 o 3 The content of ≤30ppm, its specific surface area is greater than or equal to 4.05 m 2 / g; the purity of t...

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Abstract

The invention discloses MnZn ferrite with a function of high-frequency high-energy efficiency conversion. The MnZn ferrite is prepared from a main body component and an additive component which have total mole percent content of 100%. A preparation method comprises steps of treatment of the main body component, addition of the additive component and sanding, spray granulation, green body preparation and sinter molding. According to the preparation method of the MnZn ferrite with the function of high-frequency high-energy efficiency conversion, the MnZn ferrite material with excellent intrinsicproperties is obtained by designing a proportion with lower Zn content and a low-temperature sintering process, has high Bs, small grain size and a high-resistivity grain boundary structure and is endowed with the characteristic of high-frequency high-energy efficiency conversion, power consumption of the MnZn ferrite at the high frequency of 3 MHz / 10mT is lower than 200 kW / m<3>, the blank in thehigh-frequency high-energy efficiency conversion material with permeability in the range of 900-1200 is filled up, the market demand for specific materials is met, and good economic benefits are created.

Description

technical field [0001] The invention relates to the technical field of MnZn ferrite material preparation, in particular to a high-frequency high-energy-efficiency conversion MnZn ferrite and a preparation method thereof. Background technique [0002] With the development of household appliances and switching power supplies in the direction of miniaturization and high frequency, the focus of research and development of MnZn soft magnetic power ferrite materials as their core components is also developing in the direction of miniaturization, high frequency and low loss. Professional manufacturers of magnetic materials on the market have also developed a variety of materials under high-frequency conditions. [0003] However, the loss of the existing high-frequency MnZn ferrite is still relatively large, so it still cannot meet the requirements of the working environment with increasing frequency. Contents of the invention [0004] The technical problem mainly solved by the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/38C04B35/622C04B35/64
CPCC04B35/2633C04B35/622C04B35/64C04B2235/3208C04B2235/3251C04B2235/3262C04B2235/3284C04B2235/3418C04B2235/6562C04B2235/6565C04B2235/6567
Inventor 方晋扬杨建明李平程寒
Owner CHANGSHU HAOBO ELECTRONICS TECH CO LTD
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