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Wide-temperature MnZn power ferrite material

A ferrite material and power technology, applied in the field of MnZn power ferrite material production, can solve the problem of low Bs, and achieve the effect of high Bs and low loss characteristics

Inactive Publication Date: 2013-03-13
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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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  • Wide-temperature MnZn power ferrite material
  • Wide-temperature MnZn power ferrite material
  • Wide-temperature MnZn power ferrite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh the main component raw materials according to the following main component content: Fe 2 o 3 Content is 52.7mol%, ZnO content is 9.7mol%, MnO content is 37.6mol%, 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 860°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 :0.04wt%, ZrO 2 :0.02wt%, Nb 2 o 5 :0.04wt%, SnO 2 : 0.1wt% and Co 2 o 3 : 0.35wt%), the ratio of material ball water is 1:6:2 when carrying out secondary sand grinding and sand grinding, the sand grinding time is 200 minutes, and the particle size obtained by sand grinding is 1.15 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...

Embodiment 2

[0029] Weigh the main component raw materials according to the following main component content: Fe 2 o 3 content of 52.8mol%, ZnO content of 9.2mol%, MnO content of 38mol%, after the first sanding, drying and passing through a 45 mesh / inch sieve; pre-burning the powder after the first sanding, the pre-burning temperature is 860 ℃, 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 :0.04wt%, ZrO 2 :0.03wt%, Nb 2 o 5 :0.04wt%, SnO 2 : 0.1wt% and Co2 o 3 : 0.35wt%), the ratio of material ball to water is 1:6:2 when performing secondary sanding and sanding, the sanding time is 200 minutes, and the particle size obtained by sanding is 1.15 μm; the above-mentioned secondary sanding material is dried and Granulate, then press under 5MPa pressure to a density of 3.0g / cm 3 the standard ring.

Embodiment 3

[0036] Weigh the main component raw materials according to the following main component content: Fe 2 o 3 content of 52.8mol%, ZnO content of 9.2mol%, MnO content of 38mol%, after the first sanding, drying and passing through a 45 mesh / inch sieve; pre-burning the powder after the first sanding, the pre-burning temperature is 860 ℃, 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 :0.04wt%, ZrO 2 :0.03wt%, Nb 2 o 5 :0.04wt%, SnO 2 : 0.15wt% and Co 2 o 3 : 0.35wt%), the ratio of material ball to water is 1:6:2 when performing secondary sanding and sanding, the sanding time is 200 minutes, and the particle size obtained by sanding is 1.15 μm; the above-mentioned secondary sanding material is dried and Granulate, then press under 5MPa pressure to a density of 3.0g / cm 3 the standard ring.

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Abstract

The invention relates to the technical field of production of a MnZn power ferrite material, especially to a wide-temperature MnZn power ferrite material. The material is mainly composed of main components and auxiliary components, wherein the main components comprise ingredients: by mole percentage, 52.7 to 52.8 % of Fe2O3, 9.2 to 9.8 % of ZnO, and the balance being MnO; and the auxiliary components account for 0.505 to 0.685 % of the total weight of the main components and are composed of CaCO3, ZrO2, Nb2O5, SnO2 and Co2O. The material is low in loss characteristic within a temperature range of 25 to 140 DEG C, and high in Bs characteristic as well.

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. 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, the material has relatively low loss in a wide temperature range, but the Bs of the material is relatively low, especially the Bs at 100°C, which is about 410mT (1200A / m 10kHz), which l...

Claims

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Application Information

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