Preparation method of corrosion-resistant magnetic ferrite core

A technology of magnetic ferrite and magnetic core, applied in the direction of magnetic objects, inductance/transformer/magnet manufacturing, magnetic materials, etc., can solve the problems of poor performance and poor corrosion resistance of magnetic ferrite cores, etc. To achieve the effect of improving corrosion resistance

Inactive Publication Date: 2020-11-03
天长市烁源磁电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing magnetic ferrite cores are not very effective in anti-corrosion, and the performance will deteriorate under long-term acid-base environment, which requires further improvement.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing a corrosion-resistant magnetic ferrite core of the present embodiment comprises the following steps:

[0024] Step 1: Select the magnetic core material on the market and melt it. The melting temperature is 1000°C and the melting time is 15 minutes. Then add modified pyrophyllite, and then stir at 100r / min for 15 minutes.

[0025] Step 2, ore modification: Swell rare earth minerals with xylene at 70°C for 20 minutes in a nitrogen environment, then wash with acetone for 3 times, then put them in an oven for drying, add ethanol and silane coupling agent KH-570 , mixed at a stirring speed of 155r / min, and then dried to obtain the modified ore;

[0026] Step 3, modification of phillipsite: put phillipsite in a vacuum drying oven and dry to constant weight, then use 3% mass fraction of silane coupling agent KH550 and γ-aminopropylmethyl dimethoxy Base silane was soaked in reflux, the heating temperature was 95°C, the reflux time was 2h, and then it was...

Embodiment 2

[0035] A method for preparing a corrosion-resistant magnetic ferrite core of the present embodiment comprises the following steps:

[0036] Step 1: Select the magnetic core material on the market and melt it. The melting temperature is 1500°C and the melting time is 25 minutes. Then add modified pyrophyllite, and then stir at a speed of 500r / min for 25 minutes.

[0037] Step 2, ore modification: Swell rare earth minerals with xylene at 70°C for 20 minutes in a nitrogen environment, then wash with acetone for 3 times, then put them in an oven for drying, add ethanol and silane coupling agent KH-570 , mixed at a stirring speed of 155r / min, and then dried to obtain the modified ore;

[0038] Step 3, modification of phillipsite: put phillipsite in a vacuum drying oven and dry to constant weight, then use 3% mass fraction of silane coupling agent KH550 and γ-aminopropylmethyl dimethoxy Base silane was soaked in reflux, the heating temperature was 105°C, the reflux time was 2h, and...

Embodiment 3

[0047] A method for preparing a corrosion-resistant magnetic ferrite core of the present embodiment comprises the following steps:

[0048] Step 1: Select the magnetic core material on the market and melt it. The melting temperature is 1250°C and the melting time is 20 minutes, then add modified pyrophyllite, and then stir for 20 minutes at a speed of 300r / min.

[0049] Step 2, ore modification: Swell rare earth minerals with xylene at 70°C for 20 minutes in a nitrogen environment, then wash with acetone for 3 times, then put them in an oven for drying, add ethanol and silane coupling agent KH-570 , mixed at a stirring speed of 155r / min, and then dried to obtain the modified ore;

[0050]Step 3, modification of phillipsite: put phillipsite in a vacuum drying oven and dry to constant weight, then use 3% mass fraction of silane coupling agent KH550 and γ-aminopropylmethyl dimethoxy Base silane was soaked in reflux, the heating temperature was 100°C, the reflux time was 2h, and ...

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PUM

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Abstract

The invention discloses a preparation method of a corrosion-resistant magnetic ferrite core, which comprises the following steps: 1, selecting a magnetic core material on the market, melting at 1000-1500 DEG C for 15-25 minutes, adding modified pyrophyllite, and stirring the components at the rotating speed of 100-500 r/min for 15-25 minutes to obtain the corrosion-resistant magnetic ferrite core.According to the magnetic ferrite core, a magnetic core material in the market is adopted and subjected to melting treatment, wherein the melting temperature is 1000 DEG C and the melting time is 15min; then modified pyrophyllite is added, the temperature resistance of the material can be improved after the modified pyrophyllite is modified; meanwhile, the added modified scolecite and modified ore can be further mixed and dissolved with a raw material product, and the magnetic ferrite core is obtained. Therefore, the corrosion resistance of the product is improved.

Description

technical field [0001] The invention relates to the technical field of magnetic ferrite cores, in particular to a method for preparing a corrosion-resistant magnetic ferrite core. Background technique [0002] The ferrite core is made of non-metallic magnetic material with dense and homogeneous ceramic structure, and has low coercive force, also known as soft ferrite. It consists of iron oxide (Fe2O3) and oxide or carbonate compounds of one or several other metals (eg manganese, zinc, nickel, magnesium). The ferrite raw material is pressed, then sintered at a high temperature of 1300 degrees C, and finally processed into a finished magnetic core that meets the application requirements. Compared with other types of magnetic materials, the advantage of ferrite is that it has a high magnetic permeability. And it has the advantages of high resistance and small eddy current loss in a wide frequency range. These material properties make ferrite ideal for applications such as hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/40C04B35/64H01F1/34H01F41/02C04B41/85
CPCH01F1/344H01F41/02C04B35/64C04B35/2683C04B41/5001C04B41/85C04B2235/3481C04B2235/349
Inventor 沈桂良张惠明
Owner 天长市烁源磁电有限公司
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