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A niobium-based ferrite core material for transformers

A technology for ferrite cores and transformers, applied in the field of niobium-based ferrite core materials, achieving the effects of simple preparation methods, stable magnetic properties, and strong mechanical properties

Active Publication Date: 2016-08-24
TONGLING RUIBO ELECTRONICS TECH CO LTD
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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
Comparison scheme
Effect test

Embodiment 1

[0021] A niobium-based ferrite core material for transformers, characterized in that it includes main materials and additives, the main materials include: 72.3 mol of Fe2O3, 25 mol of manganese oxide, 13.5 mol of oxide Zinc, 0.8 mol of titanium dioxide, 0.3 mol of barium oxide, 0.02 mol of rare earth composite magnetically permeable powder; additives include: 100ppm of sodium silicate, 60ppm of tricobalt tetroxide, 100ppm of magnesium oxide;

[0022] The preparation of the rare earth composite magnetically permeable powder comprises the following steps:

[0023] Preparation of master mix:

[0024] The premix solution is composed of the following raw materials in parts by weight: 0.6- ammonium metavanadate, 2 carboxymethyl cellulose, 90 niobium pentoxide, 2 vinyl carbonate, and 300 water;

[0025] Add carboxymethyl cellulose to the above water, heat to 70°C, stir evenly, add niobium pentoxide and ammonium metavanadate, stir to normal temperature, add the remaining raw materia...

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PUM

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Abstract

The invention discloses a niobium-based ferrite magnetic core material for a transformer, which includes main materials and additives, and the main materials include: 62-72.3 mol of Fe2O3 and 20.1-25 mol of manganese oxide according to the molar ratio , 10-13.5 mol of zinc oxide, 0.6-0.8 mol of titanium dioxide, 0.1-0.3 mol of barium oxide, 0.01-0.02 mol of rare earth composite magnetic powder; additives are calculated according to the weight ratio of the ferrite core material Comprising: 60-100ppm of sodium silicate, 20-60ppm of tricobalt tetroxide, 70-100ppm of magnesium oxide, the rare earth composite magnetic permeable powder added to the ferrite core material of the present invention has high magnetic energy product, stable magnetic properties, and simple preparation method. The finished product has the characteristics of high grain boundary resistivity, low porosity, large and uniform grains.

Description

technical field [0001] The invention mainly relates to the field of manufacture of oxide magnetic materials, in particular to a niobium-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 Patents(China)
IPC IPC(8): H01F1/36C04B35/40C04B35/622
Inventor 李新满
Owner TONGLING RUIBO ELECTRONICS TECH CO LTD