Zirconium-based ferrite core material used for transformer

Abstract

The invention discloses a zirconium-based ferrite core material used for a transformer. The zirconium-based ferrite core material comprises main materials and additives. The main materials comprise, by molar ratio, 60 mol to 67.3 mol of Fe2O3, 15 mol to 24.7 mol of manganese oxide, 10.2 mol to 13 mol of zinc oxide, 0.6 mol to 1 mol of titanium dioxide, 0.1 mol to 0.2 mol of ferrous sulfate, 0.01 mol to 0.02 mol of nickel oxide and 0.01 mol to 0.02 mol of rare-earth composite magnetic powder. The additives comprise, by weight ratio of components to the ferrite core material, 60 ppm to 100 ppm of lithium nitride and 40 ppm to 60 ppm of aluminum silicate. The rare-earth composite magnetic powder added into the zirconium-based ferrite core material is high in magnetic energy product, stable in magnetism and simple in preparing method, and the finished product has the advantages of being high in crystal boundary resistivity, low in gas hole ratio and large and even in crystal particle.

Description

[0001] technical field [0002] The invention mainly relates to the field of manufacture of oxide magnetic materials, in particular to a zirconium-based ferrite core material for transformers. 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] T...

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;