Wide temperature, low power consumption and high direct current superposition characteristic manganese zinc ferrite material and preparation method thereof

Abstract

The invention discloses a wide temperature, low power consumption and high direct current superposition characteristic manganese zinc ferrite material and a preparation method thereof. The material comprises a main component and a doping component, wherein the mass of the doping component is 1.5 to 2.5 percent of the total mass of the main component; the main component comprises the following components: 65.5 to 68.9wt percent of Fe2O3, 3.5 to 3.9wt percent of ZnO, the balance of Mn3O4, and the total amount is 100 percent; the doping component comprises CaCO3, SiO2, FeO, MoO3, Nb2O5, Ta2O5, ZrO3, Co2O3, K2CO3 and Li2CO3. The material gives excellent wide temperature and high direct current superposition characteristic to a ferrite material through the adjustment of iron and zinc in the main component and the matching of constituents of the doping component, effectively controls high power consumption, ensures that the grains of the material is refined and uniform through the regulationof pre-sintering, two times of ball milling and sinter molding processes, and ensures that the formed material is large in density, high in the Curie temperature and excellent in electromagnetic properties.

Description

Technical field [0001] The invention relates to the field of manganese-zinc ferrite materials, in particular to a manganese-zinc ferrite material with wide temperature, low power consumption and high direct current superposition characteristics and a preparation method thereof. Background technique [0002] With the continuous development of electronic transformers, the requirement for electronic transformers to be lightweight, efficient and energy-saving has become increasingly obvious. Existing soft ferrite materials are suitable for general switching power supply transformers, LCD backlight power inverters, and are especially used in automotive electronics. However, they are used in most circuits such as AC-DC, DC-DC converters, and inductor transformers. There is a DC bias (DC-Bias) state during medium operation. As a manufacturer of manganese-zinc ferrite cores, higher requirements have been put forward, requiring the improvement of the DC superimposition characteristics of...

AI Technical Summary

Problems solved by technology

[0003] The main technical problem to be solved by the present invention is to provide a manganese-zinc ferrite material with wide temperature, low power consumption and high DC superposition characteristics and its preparation method, which can solve the above-mentioned shortcomings of existing magnetic core materials