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Low-loss manganese zinc ferrite material for temperature of 20 DEG C below zero to 140 DEG C and manufacturing method thereof

A technology of manganese zinc ferrite and ferrite materials, applied in the field of MnZn soft magnetic ferrite materials and manufacturing, can solve the problems of wide temperature and low loss range to be further expanded, and achieve the effect of low cost and excellent performance

Active Publication Date: 2015-05-06
江门安磁电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The inventor's published invention patents CN102682946A and CN103496963A take into account the technical solutions of high temperature, high Bs and wide temperature and low loss dual characteristics, but the range of wide temperature and low loss needs to be further expanded

Method used

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  • Low-loss manganese zinc ferrite material for temperature of 20 DEG C below zero to 140 DEG C and manufacturing method thereof
  • Low-loss manganese zinc ferrite material for temperature of 20 DEG C below zero to 140 DEG C and manufacturing method thereof
  • Low-loss manganese zinc ferrite material for temperature of 20 DEG C below zero to 140 DEG C and manufacturing method thereof

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Effect test

example 1-25

[0030] 1) Using commercially available Fe 2 o 3 (purity ≥ 99.3%), MnO (Mn content ≥ 76.6%), ZnO (purity ≥ 99.7%) as the main components, according to the amount shown in Table 1 Fe 2 o 3 , MnO, and ZnO are placed in a sand mill, stirred and ground to mix evenly, and pre-fired at 890°C for 2 hours after drying;

[0031] 2) Based on the total weight of the pre-burned powder, add additives: Co shown in Table 1 2 o 3 and NiO, 50ppm SiO 2 , 300ppm of CaCO 3 , 300ppm Nb 2 o 5 , 300ppm ZrO 2 and deionized water, dispersant, and defoamer for secondary grinding until the average particle size of the powder is 0.8 μm;

[0032]3) Based on the total weight of the powder after ball milling, add 9.0wt% polyvinyl alcohol solution with a concentration of 9wt% to the powder, mix and granulate evenly, and add polyethylene with a concentration of 0.2wt% to the granules Alcohol aqueous solution, make the moisture content of the powder reach 0.25wt%, based on the total weight of the obta...

example 26～30

[0048] 1) Fe 2 o 3 55.0mol%, MnO 36.5mol%, ZnO 8.5mol% as the main component formula weigh Fe 2 o 3 (purity ≥ 99.3%), MnO (Mn content ≥ 76.6%), ZnO (purity ≥ 99.7%) raw materials and 0.34wt% Co based on the total weight of the main components 2 o 3 and 0.7wt% NiO are placed in a sand mill, stirred and ground to mix evenly, and pre-fired at 920°C for 1.5h after drying;

[0049] 2) Based on the total weight of the pre-calcined powder, add auxiliary components according to the addition amount shown in Table 3, then add deionized water, dispersant, and defoamer to carry out the second grinding together, and grind until the average particle size of the powder is 0.8 μm;

[0050] 3) Based on the total weight of the powder after ball milling, add 9.0wt% polyvinyl alcohol solution with a concentration of 9wt% to the powder, mix and granulate evenly, and add polyethylene with a concentration of 0.2wt% to the granules Alcohol aqueous solution, make the moisture content of the powd...

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Abstract

The invention provides a low-loss manganese zinc ferrite material for temperature of 20 DEG C below zero to 140 DEG C and a manufacturing method thereof. The ferrite material comprises main components and auxiliary components, wherein the main components refer to x mol% of Fe2O3, y mol% of MnO and z mol% of ZnO; the auxiliary components comprise c wt% of Co2O3 and n wt% of NiO based on the total weight of main components; the ratios of the components are that x is equal to 54.5-55.5, z is equal to 7.5-9.5, y is equal to 100-x-z, c is equal to 0.25-0.45 and n is equal to 0.3-0.9; A being 2600-45x-9z is more than or equal to 30 and less than or equal to 80; and B being 150-3x-3y+371c-1.6n is more than or equal to -30 and less than or equal to 30. The manganese zinc ferrite material is prepared by the process steps of batching, mixing, pre-sintering, performing secondary grinding, granulating, molding and sintering.

Description

technical field [0001] The invention relates to a MnZn soft magnetic ferrite material and a manufacturing method, in particular to a low-loss MnZn power ferrite material used at -20 to 140°C and a manufacturing method thereof, belonging to the manufacture of metal functional materials for electronic components Technology in the field of new materials and high technology. Background technique [0002] Soft magnetic ferrite is a kind of magnetic material with the most varieties, the most widely used and the largest consumption, and it is an important basic functional material in the electronic information industry. In the production and use of soft magnetic ferrite, MnZn ferrite is dominant, and the output of MnZn ferrite accounts for about 70% of the total output of soft ferrite. It is currently the most concerned and active soft magnetic material. field. In recent years, the development of MnZn ferrite materials has shifted from the in-depth improvement of a single perform...

Claims

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Application Information

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IPC IPC(8): C04B35/26C04B35/622
Inventor 黄爱萍谭福清豆小明汪南东
Owner 江门安磁电子有限公司
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