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Low-loss ferrite material

A ferrite material and low-loss technology, applied in the field of magnetic core materials, can solve the problem of unsatisfactory comprehensive performance of ferrite materials

Inactive Publication Date: 2014-10-01
ZHONGDE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the prior art, the overall performance of ferrite materials is not ideal enough and needs to be improved.

Method used

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  • Low-loss ferrite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A low-loss ferrite material, each raw material is weighed according to the following ratio: Fe 2 o 3 , MnO, ZnO, sodium pyrophosphate, CaO, SiO 2 , V 2 o 5 、MoO 3 、 Bi 2 o 3 ,P 2 o 5 , where Fe 2 o 3 :MnO:ZnO molar ratio is 54:34:12, with Fe 2 o 3 , MnO, ZnO three quality and as the basis, sodium pyrophosphate, CaO, SiO 2 , V 2 o 5 、MoO 3 、 Bi 2 o 3 ,P 2 o 5 The mass fractions are 1.1%, 0.032%, 0.006%, 0.020%, 0.017%, 0.026%, 0.023%, respectively;

[0018] According to the above-mentioned raw material formula, the low-loss ferrite material is prepared according to the following steps:

[0019] S1: a ball mill: the Fe 2 o 3 , MnO, ZnO, CaO, SiO 2 , V 2 o 5 、MoO 3 、 Bi 2 o 3 ,P 2 o 5 Put it into a ball mill, adopt a rotating speed of 450r / min, carry out mixed ball milling, dry after ball milling for 3.5 hours, and set aside;

[0020] S2: Pre-burning: put the ball-milled powder in S1 into the holding furnace, raise the temperature to 895°C at...

Embodiment 2

[0024] A low-loss ferrite material, each raw material is weighed according to the following ratio: Fe 2 o 3 , MnO, ZnO, sodium pyrophosphate, CaO, SiO 2 , V 2 o 5 、MoO 3 、 Bi 2 o 3 ,P 2 o 5 , where Fe 2 o 3:MnO:ZnO molar ratio is 54.5:34:11.5, with Fe 2 o 3 , MnO, ZnO three quality and as the basis, sodium pyrophosphate, CaO, SiO 2 , V 2 o 5 、MoO 3 、 Bi 2 o 3 ,P 2 o 5 The mass fractions are 1.0%, 0.030%, 0.005%, 0.020%, 0.015%, 0.025%, 0.025%, respectively;

[0025] According to the above-mentioned raw material formula, the low-loss ferrite material is prepared according to the following steps:

[0026] S1: a ball mill: the Fe 2 o 3 , MnO, ZnO, CaO, SiO 2 , V 2 o 5 、MoO 3 、 Bi 2 o 3 ,P 2 o 5 Put into the ball mill, adopt the rotating speed of 460r / min, carry out mixed ball mill, dry after ball mill 3h, stand-by;

[0027] S2: Pre-burning: put the ball-milled powder in S1 into the holding furnace, raise the temperature to 880°C at an average heatin...

Embodiment 3

[0031] A low-loss ferrite material, each raw material is weighed according to the following ratio: Fe 2 o 3 , MnO, ZnO, sodium pyrophosphate, CaO, SiO 2 , V 2 o 5 、MoO 3 、 Bi 2 o 3 ,P 2 o 5 , where Fe 2 o 3 :MnO:ZnO molar ratio is 53.5:35:11.5, with Fe 2 o 3 , MnO, ZnO three quality and as the basis, sodium pyrophosphate, CaO, SiO 2 , V 2 o 5 、MoO 3 、 Bi 2 o 3 ,P 2 o 5 The mass fractions are 1.5%, 0.033%, 0.008%, 0.018%, 0.011%, 0.021%, 0.029%, respectively;

[0032] According to the above-mentioned raw material formula, the low-loss ferrite material is prepared according to the following steps:

[0033] S1: a ball mill: the Fe 2 o 3 , MnO, ZnO, CaO, SiO 2 , V 2 o 5 、MoO 3 、 Bi 2 o 3 ,P 2 o 5 Put into the ball mill, adopt the rotating speed of 440r / min, carry out mixing ball mill, dry after ball milling 4h, stand-by;

[0034] S2: Pre-burning: put the ball-milled powder in S1 into the holding furnace, raise the temperature to 905°C at an average h...

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Abstract

The invention discloses a low-loss ferrite material. The low-loss ferrite material is prepared from the following raw materials: Fe2O3, MnO, ZnO, sodium pyrophosphate, CaO, SiO2, V2O5, MoO3, Bi2O3 and P2O5, wherein the molar ratio of Fe2O3 to MnO to ZnO is (50-55) to (33-35) to (9-12); by using the sum of the mass of Fe2O3, MnO and ZnO as a standard, the low-loss ferrite material is prepared from the following raw materials in percentage by weight: 0.9-1.5% of sodium pyrophosphate, 0.025-0.035% of CaO, 0.004-0.012% of SiO2, 0.018-0.032% of V2O5, 0.01-0.02% of MoO3, 0.01-0.03% of Bi2O3 and 0.01-0.03% of P2O5. The low-loss ferrite material is prepared by virtue of the following steps: primary ball-milling, pre-sintering, secondary ball-milling, granulating, dry-press molding and sintering.

Description

technical field [0001] The invention belongs to the technical field of magnetic core materials, in particular to a low-loss ferrite material. Background technique [0002] Ferrite is a non-metallic magnetic material developed in the 1940s. Because of its appearance similar to ceramics, it is also called "magnetic porcelain". Ferrite material has high dielectric properties because its resistivity is much larger than other metal materials, and it has good performance at high frequencies, and it performs well in the field of high frequency and weak current. With the increasing popularity of digital information technology, the requirements for low-loss ferrite materials are also increasing, and low-loss ferrite materials are required to have high magnetic permeability, high magnetic induction, and low loss. However, in the prior art, the overall performance of the ferrite material is not ideal enough and needs to be improved. Contents of the invention [0003] In order to o...

Claims

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Application Information

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IPC IPC(8): C04B35/26C04B35/622
Inventor 李前军沈建元王步猛屠德义朱友朝
Owner ZHONGDE ELECTRONICS
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