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A kind of wide temperature ultra-low loss soft ferrite material and preparation method thereof

A soft magnetic ferrite, ultra-low technology, applied in the direction of inductance/transformer/magnet manufacturing, inorganic material magnetism, electrical components, etc., can solve the problems of the total loss of switching power supply, etc., to achieve the effect of improving temperature characteristics and reducing power loss

Active Publication Date: 2021-12-07
HAINING LIANFENG MAGNET IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In these devices, the loss of the switching power supply responsible for providing energy conversion has an important impact on the total loss

Method used

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  • A kind of wide temperature ultra-low loss soft ferrite material and preparation method thereof
  • A kind of wide temperature ultra-low loss soft ferrite material and preparation method thereof
  • A kind of wide temperature ultra-low loss soft ferrite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0047] The above-mentioned preparation method of a wide temperature ultra-low loss soft ferrite material comprises the following steps:

[0048] (1) Mixing of raw materials: After batching according to the set ratio of the four raw materials, use a flip-type vibrating mill to vibrate and grind for 20±2 minutes to fully mix the four raw materials, and the bulk density is controlled at 1.0 ±0.1g / cm 3 within;

[0049] (2) Pelletizing: Put the raw materials mixed by vibrating and milling into the disc pelletizing machine, depending on the dryness of the powder, properly spray deionized water, and use the snowball effect to form the powder into 3-8mm balls. Among them, more than 90% of the balls are required to have a diameter of 3 to 8mm, because too small balls have poor fluidity and the actual pre-burning time of the powder will be long, while too large balls will lead to insufficient pre-burning; ball hardness standard For the free fall at a height of 1.5 meters from the grou...

Embodiment 1～4

[0058] A method for preparing a wide temperature ultra-low loss soft ferrite material, the specific steps are as follows:

[0059] (1) Mixing of raw materials: the main formula is formulated according to the set mole percentage, wherein, Fe 2 o 3 The content of ZnO is 52.5~53.5mol%, the content of ZnO is 11~13mol%, the content of CoO is 0.1~0.6mol%, and the rest is MnO. Use a flip-type vibrating mill to vibrate and grind for 20±2 minutes to fully grind the three raw materials. Mixing, and the bulk density is controlled at 1.0±0.1g / cm 3 within;

[0060] (2) Pelletizing: Put the raw materials mixed by vibrating and milling into the disc pelletizing machine, depending on the dryness of the powder, properly spray deionized water, and use the snowball effect to form the powder into 3-8mm balls. Among them, it is required that the diameter of the ball is 3-8mm to account for more than 90%, and the hardness standard of the ball is that the free fall of the cement floor (or iron pl...

Embodiment 5～10

[0071] Embodiments 5 to 10 have the same main formula, wherein Fe 2 o 3 The content of ZnO is 52.8mol%, the content of ZnO is 12.6mol%, the content of CoO is 0.35mol%, and the rest is MnO. The additive combination is shown in Table 2. The corresponding magnetic ring samples are prepared by the preparation process used in Examples 1-4. , to test its electromagnetic properties, the main technical indicators are shown in Table 3. It can be seen from Table 3 that within the scope of the patent of the present invention, the addition amount of the additive combination can meet the technical index requirements of the material.

[0072] Table 2

[0073]

[0074] table 3

[0075]

[0076]

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Abstract

The invention discloses a wide temperature ultra-low loss soft magnetic ferrite material and a preparation method thereof, wherein the ferrite material includes main components and additives, wherein the main component includes Fe with a content of 51.5-53.5 mol%. 2 o 3 , ZnO with a content of 11 to 14 mol%, CoO with a content of 0.1 to 0.6 mol%, and the rest of MnO; additives include CuO, V 2 o 5 , CaCO 3 , Nb2O 5 、 Ta 2 o 5 、TiO 2 , based on the total weight of the main components, the total amount of additives added is 2000-5000ppm. The present invention adopts the above-mentioned technical scheme. In order to improve the power loss in a wide temperature range, the weight ratio of CuO and CoO is between 0.25 and 7.5. In order to reduce the sintering temperature, CuO and V are added at the same time. 2 o 5 The total amount of two fluxes added is 600-4000ppm.

Description

technical field [0001] The invention belongs to the field of preparing magnetic materials by an oxide method, and in particular relates to a soft magnetic ferrite material with ultra-low power loss in the range of 25°C to 120°C and a preparation method thereof. Background technique [0002] In the current situation where informatization is getting deeper and deeper into daily life, various electronic devices, such as TVs, computers, chargers, automotive electronic devices, energy-saving lamps, etc., have entered thousands of households. Consuming a large amount of electric energy, the energy consumption and efficiency of these devices have a very important impact on energy saving and emission reduction. Therefore, it is very necessary to reduce the energy loss of these electronic devices during operation. And in these devices, the loss of the switching power supply responsible for providing energy conversion has a significant impact on the total loss. Usually, the switching...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/26C04B35/622H01F1/36H01F41/02
CPCC04B35/2633C04B35/622C04B2235/3208C04B2235/3232C04B2235/3239C04B2235/3251C04B2235/3267C04B2235/3275C04B2235/3281C04B2235/3284H01F1/36H01F41/02
Inventor 王微达李永劬郭凤鸣严建强李明治
Owner HAINING LIANFENG MAGNET IND
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