Carbon-based ferrite magnetic core material for transformer

Abstract

The invention discloses a carbon-based ferrite magnetic core material for a transformer. The material comprises major ingredients and additives, wherein the major ingredients comprise 58 to 65.4 moles of Fe2O3, 16.3 to 21 moles of manganese oxide, 9.4 to 13 moles of zinc oxide, 1.2 to 2 moles of chromium oxide, 0.1 to 0.2 mole of ferrous disulfide, 0.6 to 1 mole of calcium oxide and 0.01 to 0.02 mole of rare earth composite magnetic-conducting powder according to a molar ratio; the additives comprise 100 to 200 parts per million of aluminum oxide, 60 to 100 parts per million of tin oxide and 50 to 70 parts per million of aluminum silicate 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 carbon-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 e...

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;