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Tantalum-based ferrite magnetic core material used for transformer

A ferrite core and transformer technology, applied in the field of tantalum-based ferrite core materials, achieves the effects of low porosity, large and uniform grains, and stable magnetic properties

Active Publication Date: 2014-09-24
ANHUI WANHONG ELECTRICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now the electronic communication industry needs ferrite cores with low core loss and high magnetic permeability to meet the miniaturization and high efficiency requirements of current electrical equipment, and the existing magnetic cores are difficult to meet the above requirements;

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0025] A tantalum-based ferrite core material for transformers, characterized in that it includes main materials and additives, the main materials include: 57.1 mol of Fe2O3, 16.2 mol of manganese oxide, 10.1 mol of oxide Zinc, 5.2 mol of copper oxide, 0.2 mol of zinc borate, 1.3 mol of barium oxide, 0.02 mol of rare earth composite magnetic conductive powder; additives include: 50ppm tripolymer Aluminum phosphate, 20ppm titanium tetrachloride, 50ppm silicon micropowder;

[0026] The preparation of the rare earth composite magnetically permeable powder comprises the following steps:

[0027] Preparation of master mix:

[0028] Described premix is ​​made up of the following raw materials of weight portion:

[0029] Tantalum oxide 100, polyvinyl butyral 2, Pingpingjia O 2, pentaerythritol 3, triglyceride fatty acid ester 2, deionized water 400;

[0030] Heat polyvinyl butyral to soften, add tantalum oxide, stir and mix for 5 minutes, add triglyceride fatty acid ester, continu...

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Abstract

The invention discloses a tantalum-based ferrite magnetic core material used for transformer, which comprises a main material and an additive, the main material comprises the following components according to mol ratio: 57.1-64mol of Fe2O3, 16.2-20mol of manganese oxide, 10.1-15mol of zinc oxide, 4-5.2mol of copper oxide, 0.2-1 mol of zinc borate, 1-1.3mol of barium oxide and 0.01-0.02mol of rare earth composite magnetic conductive powder; and the additive comprises the following components according to weight ratio of the additive in the ferrite magnetic core material: 30-50ppm of aluminium triphosphate, 10-20ppm of titanium tetrachloride and 40-50ppm of silicon powder. The magnetic energy product of the rare earth composite magnetic conductive powder in the ferrite magnetic core material is high, and magnetic performance is stable, preparation method is simple, and the finished product has the characteristics of high crystal boundary resistivity, low porosity and large crystal grain.

Description

technical field [0001] The invention mainly relates to the field of manufacture of oxide magnetic materials, in particular to a tantalum-based ferrite core material for transformers. Background technique [0002] With the development of communication technology and digitalization of electronic products, new requirements are put forward for soft ferrite and components. High-performance and high-permeability magnetic cores are widely used in various basic materials for telecommunications and information, such as common-mode filters, Saturated inductors, current transformers, leakage protectors, insulation transformers, signal and pulse transformers and other fields have been widely used. Now the electronic communication industry needs ferrite cores with low core loss and high magnetic permeability to meet the miniaturization and high efficiency requirements of electrical equipment. The existing magnetic cores are difficult to meet the above requirements; [0003] The magnetic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/38C04B35/63C04B35/622
Inventor 张守勇邓军崔学保
Owner ANHUI WANHONG ELECTRICAL EQUIP
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