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Wide-temperature MnZn power ferrite material and preparation method thereof

A ferrite material and power technology, applied in the field of wide-temperature MnZn power ferrite material and its preparation, can solve the problems of low Bs, unfavorable device miniaturization, and no consideration of standby loss at 25°C, and achieve high Bs, Effect of low loss characteristics

Inactive Publication Date: 2014-02-19
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although Philips announced the 3C97 material, which has relatively low loss in a wide temperature range, the Bs of this material is relatively low, especially the Bs at 100°C, which is about 410mT (1200A / m 10kHz). Efficiency of power transmission of materials, especially at high temperature
On the other hand, it is not conducive to the miniaturization of the device
3C97 mainly focuses on the loss at 60°C-120°C, and does not consider the standby loss at 25°C
The temperature of this material is relatively low in the range of 25°C to 140°C, but the Bs is relatively low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh the main component raw materials according to the following main component content: Fe 2 o 3 Content is 52.45mol%, ZnO content is 9.7mol%, MnO content is 37.85mol%, dry and pass through 45 mesh / inch sieves after primary sand-milling; Carry out pre-calcination to the powder after primary sand-milling, pre-calcination temperature is 880°C, the time is 2 hours; add the auxiliary component raw materials weighed in proportion to the calcined material (the auxiliary component content based on the total weight of the main component is: CaCO 3 :0.05wt%, ZrO 2 :0.02wt%, Nb 2 o 5 :0.03wt% and Co 2 o 3 : 0.35wt%), the ratio of material ball water is 1:6:2 when carrying out secondary sand grinding, the sand grinding time is 220 minutes, and the particle size obtained by sand grinding is 1.05 μ m; the above-mentioned secondary sand abrasive is dried And granulate, and then pressed under the pressure of 5MPa to a density of 3.0g / cm 3 the standard ring.

Embodiment 2

[0034] Weigh the main component raw materials according to the following main component content: Fe 2 o 3 Content is 52.6mol%, ZnO content is 9.5mol%, MnO content is 37.9mol%, dry and pass through 45 mesh / inch sieves after primary sand grinding; Carry out pre-calcination to the powder after primary sand grinding, pre-calcination temperature is 880°C, the time is 2 hours; add the auxiliary component raw materials weighed in proportion to the calcined material (the auxiliary component content based on the total weight of the main component is: CaCO 3 :0.06wt%, ZrO 2 :0.03wt%, Nb 2 o 5 :0.04wt% and Co 2 o 3 : 0.4wt%), the ratio of ball water to secondary sand grinding was 1:6:2, the sand grinding time was 220 minutes, and the particle size obtained by sand grinding was 1.05 μm; the above secondary sand abrasive was dried and Granulate, then press under 5MPa pressure to a density of 3.0g / cm 3 the standard ring.

Embodiment 3

[0041] Weigh the main component raw materials according to the following main component content: Fe 2 o 3 Content is 52.45mol%, ZnO content is 9.7mol%, MnO content is 37.85mol%, dry and pass through 45 mesh / inch sieves after primary sand-milling; Carry out pre-calcination to the powder after primary sand-milling, pre-calcination temperature is 880°C, the time is 2 hours; add the auxiliary component raw materials weighed in proportion to the calcined material (the auxiliary component content based on the total weight of the main component is: CaCO 3 :0.05wt%, ZrO 2 :0.02wt%, Nb 2 o 5 :0.04wt% and Co 2 o 3 : 0.35wt%), the ratio of material ball water is 1:6:2 when carrying out secondary sand grinding, the sand grinding time is 220 minutes, and the particle size obtained by sand grinding is 1.05 μ m; the above-mentioned secondary sand grinding material is dried And granulate, and then pressed under the pressure of 5MPa to a density of 3.0g / cm 3 the standard ring.

[0042]...

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Abstract

The invention relates to the technical field of production of MnZn power ferrite materials and particularly relates to a wide-temperature MnZn power ferrite material and a preparation method thereof. The wide-temperature MnZn power ferrite material consists of main components and auxiliary components, wherein the main components include 52.45-52.6 mol% of Fe2O3, 9.2-9.7mol% of ZnO and the balance of MnO; according to the total weight of the main components, the auxiliary components include 0.05-0.06% of CaCO3, 0.02-0.03% of ZrO2, 0.03-0.04% of Nb2O5 and 0.35-0.4% of Co2O3. The wide-temperature MnZn power ferrite material has low loss characteristic at the temperature ranges of 25 DEG C and 140 DEG C and also gives consideration to high Bs characteristic.

Description

technical field [0001] The invention relates to the technical field of MnZn power ferrite material production, in particular to a wide temperature MnZn power ferrite material and a preparation method thereof. Background technique [0002] At present, the mainstream MnZn power ferrite materials in foreign countries pay attention to the loss at a certain temperature point in terms of loss, such as PC44, PC47, PC45, PC46 and other materials of Japan TDK company, foreign TDK company developed PC95 material, Philips company developed 3C97 material. Although the Japanese TDK company announced the PC95 material to lower the loss at 25°C-100°C, the application of this material is mainly to reduce the standby loss, and it is not suitable for long-term work at 100°C or higher temperature. Although Philips announced the 3C97 material, which has relatively low loss in a wide temperature range, the Bs of this material is relatively low, especially the Bs at 100°C, which is about 410mT (...

Claims

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Application Information

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IPC IPC(8): C04B35/26C04B35/622
Inventor 吕东华徐艳杜阳忠颜冲
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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