Silicon carbide-based ferrite magnetic core material for transformer

A ferrite core, silicon carbide-based technology, applied in the field of oxide magnetic material manufacturing, to achieve the effect of large and uniform crystal grains, high grain boundary resistivity, and magnetic stability

Inactive Publication Date: 2014-09-24
ANHUI WANHONG ELECTRICAL EQUIP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Now the electronic communication industry needs ferrite cores with low core loss and high magnetic permeability to meet the miniaturizatio...

Method used

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Embodiment 1

[0024] A silicon carbide-based ferrite core material for transformers is characterized in that it includes main materials and additives, and the main materials include: 58.7mol of Fe2O3, 15.1mol of manganese oxide, 10.2mol of Zinc oxide, 5.6 mol of ferric oxide, 0.2 mol of calcium sulfate, 0.2 mol of magnesium dihydrogen phosphate, 0.02 mol of rare earth composite magnetic conductive powder; the additives include according to the weight ratio of the ferrite core material : 100ppm molybdenum oxide, 50ppm zirconium oxide;

[0025] The preparation of the rare earth composite magnetically permeable powder comprises the following steps:

[0026] Preparation of master mix:

[0027] Described premix is ​​made up of the following raw materials of weight portion:

[0028] Silicon carbide 90, ammonium polyphosphate 3, alkenyl succinate 3, glyceryl monostearate 0.5, deionized water 400;

[0029] Mix and ball-mill silicon carbide and ammonium polyphosphate to a fineness of 100 μm, add ...

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Abstract

The invention discloses a silicon carbide-based ferrite magnetic core material for a transformer. The material comprises major ingredients and additives, wherein the major ingredients comprise 58.7 to 65 moles of Fe2O3, 15.1 to 19 moles of manganese oxide, 10.2 to 14 moles of zinc oxide, 4 to 5.6 moles of ferroferric oxide, 0.1 to 0.2 mole of calcium sulfate, 0.1 to 0.2 mole of magnesium dihydrogen phosphate and 0.01 to 0.02 mole of rare earth composite magnetic-conducting powder according to a molar ratio; the additives comprise 80 to 100 parts per million of molybdenum oxide and 40 to 50 parts per million of zirconium oxide based on the weight of the ferrite magnetic core material. The rare earth composite magnetic-conducting powder added to the ferrite magnetic core material has a magnetic energy product and stable magnetism, a preparation method is simple, and a finished product has the characteristics of high grain boundary resistivity, low porosity and large and uniform crystal grain sizes.

Description

technical field [0001] The invention mainly relates to the field of manufacture of oxide magnetic materials, in particular to a silicon carbide-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 m...

Claims

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Application Information

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IPC IPC(8): H01F1/36C04B35/40C04B35/622
Inventor 张守勇邓军崔学保
Owner ANHUI WANHONG ELECTRICAL EQUIP
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