Lanthanum base ferrite magnetic core material for transformer

Abstract

The invention discloses a lanthanum base ferrite magnetic core material for a transformer. The lanthanum base ferrite magnetic core material comprises a main material and additives, wherein the main material comprises the following ingredients according to the mol ratio: 60.2 to 66mol of Fe2O3, 13.4 to 17mol of manganese oxide, 9.1 to 11mol of zinc oxide, 1 to 2.7mol of graphite, 0.5 to 0.8mol of tin oxide, 0.1 to 0.2mol of barium sulfate and 0.01 to 0.02mol of rare earth composite magnetism conduction powder bodies, and the additives comprise the following materials through being metered by the weight ratio of the materials to the ferrite magnetic core material: 70 to 100ppm of potassium permanganate and 60 to 70ppm of cobalt oxide. The lanthanum base ferrite magnetic core material has the advantages that the magnetic energy product of the rare earth composite magnetism conduction powder bodies added into the ferrite magnetic core material is high, the magnetism is stable, a preparing method is simple, and a finished product has the characteristics of high crystal boundary resistivity, low porosity and large and uniform crystal particles.

Description

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

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;