Cobalt-based ferrite core materials

Abstract

The invention discloses cobalt-based ferrite core materials which comprise main materials and annexing agents. The main materials comprise, by molar ratio, 62.1-68 mol of Fe2O3, 14.7-18 mol of manganese oxide, 11.2-16 mol of zinc oxide, 0.1-0.2 mol of silicon carbide, 0.1-0.3 mol of lithium carbonate and 0.01-0.02 mol of rare earth composite magnetic permeable powder; the annexing agents comprise, by weight ratio of components to the ferrite core materials, 10-20 ppm of iron sulfide and 20-30 ppm of silver nitrate. The rare earth composite magnetic permeable powder added into the ferrite core materials is high in magnetic energy product, the magnetism is stable, the preparation method is simple, and the finished product has the advantages of being high in crystal boundary electrical resistivity, low in air hole rate and large and even in crystalline grain.

Description

[0001] technical field [0002] The invention mainly relates to the field of manufacture of oxide magnetic materials, in particular to a cobalt-based ferrite core material. Background technique [0003] 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; [0004] The magnetic energy p...

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;