Ferrite material with high magnetic strength

A ferrite material, high magnetic induction 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 ferr

Method used

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  • Ferrite material with high magnetic strength

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Experimental program
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Effect test

Embodiment 1

[0014] A high magnetic induction ferrite material, its raw materials include:

[0015] Fe 2 o 3 , MnO, ZnO, sodium hexametaphosphate, 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 54:23:23, with Fe 2 o 3 , MnO, ZnO three quality and as the basis, sodium hexametaphosphate, CaO, SiO 2 , V 2 o 5 、MoO 3 、 Bi 2 o 3 ,P 2 o 5 The mass fractions are 1.3%, 0.032%, 0.007%, 0.019%, 0.018%, 0.021%, 0.023%, respectively;

[0016] During the preparation process of the high magnetic induction ferrite material, S1: Weigh each raw material, perform ball milling, pre-calcination, secondary ball milling, granulation, and dry pressing on the powder to complete the green body molding and set it aside for use. Among them, sodium hexametaphosphate is added as a dispersant in the secondary ball milling process; S2: Sintering: Put the green body formed in S1 into a high-temperature sintering furnace, raise the temperature to 1180°C at an ...

Embodiment 2

[0018] A high magnetic induction ferrite material, its raw materials include:

[0019] Fe 2 o 3 , MnO, ZnO, sodium hexametaphosphate, CaO, SiO 2 , V 2 o 5 、MoO 3 、 Bi 2 o 3 ,P 2 o 5 , where Fe 2 o 3 : The molar ratio of MnO: ZnO is 53:25:22, with Fe 2 o 3 , MnO, ZnO three quality and as the basis, sodium hexametaphosphate, CaO, SiO 2 , V 2 o 5 、MoO 3 、 Bi 2 o 3 ,P 2 o 5 The mass fractions are 0.9%, 0.025%, 0.006%, 0.018%, 0.02%, 0.02%, 0.03%, respectively;

[0020] During the preparation process of the high magnetic induction ferrite material, S1: Weigh each raw material, perform ball milling, pre-calcination, secondary ball milling, granulation, and dry pressing on the powder to complete the green body molding and set it aside for use. Among them, sodium hexametaphosphate is added as a dispersant in the secondary ball milling process; S2: Sintering: Put the green body formed in S1 into a high-temperature sintering furnace, raise the temperature to 1150°C ...

Embodiment 3

[0022] A high magnetic induction ferrite material, its raw materials include:

[0023] Fe 2 o 3 , MnO, ZnO, sodium hexametaphosphate, 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 54:22:24, with Fe 2 o 3 , MnO, ZnO three quality and as the basis, sodium hexametaphosphate, CaO, SiO 2 , V 2 o 5 、MoO 3 、 Bi 2 o 3,P 2 o 5 The mass fractions are 1.5%, 0.035%, 0.008%, 0.022%, 0.01%, 0.03%, 0.02%, respectively;

[0024] In the preparation process of the high magnetic induction ferrite material, S1: Weigh each raw material, perform ball milling, pre-calcination, secondary ball milling, granulation, and dry pressing on the powder to complete the molding of the green body and wait for use. Among them, sodium hexametaphosphate is added as a dispersant in the secondary ball milling process; S2: Sintering: Put the green body formed in S1 into a high-temperature sintering furnace, raise the temperature to 1210°C at an average h...

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Abstract

The invention discloses a ferrite material with high magnetic strength. The ferrite material comprises the following raw materials: Fe2O3, MnO, ZnO, sodium hexametaphosphate, CaO, SiO2, V2O5, MoO3, Bi2O3 and P2O5, wherein the molar ratio of Fe2O3 to MnO to ZnO is (50-55) to (20-27) to (20-28); based on the mass sum of Fe2O3, MnO and ZnO, the mass fractions of sodium hexametaphosphate, CaO, SiO2, V2O5, MoO3, Bi2O3 and P2O5 are respectively 0.9-1.5%, 0.025-0.035%, 0.005-0.015%, 0.018-0.042%, 0.01-0.02%, 0.02-0.04% and 0.02-0.03%. The ferrite material with high magnetic strength is prepared by the following steps: weighing the raw materials; primarily ball-milling; pre-sintering; secondarily ball-milling; pelleting; dry pressing; and sintering.

Description

technical field [0001] The invention belongs to the technical field of magnetic core materials, and in particular relates to a high magnetic induction 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 high magnetic induction ferrite materials are also continuously increasing, requiring high magnetic induction ferrite materials to have high magnetic permeability, high magnetic induction intensity, low loss and other properties. However, in the prior art, the overall performance of the ferrite material is not ...

Claims

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Application Information

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IPC IPC(8): C04B35/38C04B35/622
Inventor 李前军沈建元屠德义徐升宝蒲成刚
Owner ZHONGDE ELECTRONICS
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