Manganese zinc ferrite magnetic core with high pressure bearing performance

Abstract

The invention relates to the technical field of manganese zinc ferrite magnetic core manufacturing, in particular to a high-pressure-bearing manganese zinc ferrite magnetic core. The method mainly aims at solving the problems that due to the fact that the particle size difference is too large, gaps are formed in internal connection, the internal structure of the magnetic core is unstable, the pressure bearing degree of the magnetic core is affected, and due to the fact that the temperature of a setter plate is too high in the sintering process, the setter plate and zinc in manganese-zinc ferrite generate a replacement reaction, and the use performance of the magnetic core is reduced. According to the technical scheme, the composite material comprises the following raw materials in parts by mass: 45-60 mol of iron oxide, 12-18 mol of zinc oxide, 23-29 mol of manganese oxide, 2-8 mol of cobalt oxide, 1.8-4.8 mol of magnesium oxide, 16-19 mol of silicon oxide and 3-12 mol of calcium oxide. The raw materials are easy to obtain, preparation of the magnetic core is controlled from the raw materials, the problem that the internal structure of the magnetic core has a connection trend is solved, the tightness of the internal structure of the magnetic core is improved, the cushion layer is laid in the sintering process, the problem that the performance is indeed due to sintering is solved, the conductive stability is ensured, and the method is suitable for application and popularization.

Description

technical field [0001] The invention relates to the technical field of manufacturing manganese-zinc ferrite cores, in particular to a high-pressure-bearing manganese-zinc ferrite core. Background technique [0002] Manganese zinc ferrite material belongs to soft magnetic ferrite. As an important member of the magnetic material family, various magnetic components such as electronic transformers, inductors, choke coils and magnetic cores made of it are used in military equipment, modern communications, etc. , automotive electronics, new energy, information security, anti-electromagnetic interference and office automation and other fields play a key role. Due to the rapid development of electronic information industries such as communications and computer networks, the volume of electronic instruments and equipment tends to be miniaturized and the structure tends to be more compact. The matching gap between the magnetic core and the coil bobbin is getting smaller and smaller, a...

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Problems solved by technology

[0004] However, the particle structure of the raw material in the preparation process is also the main factor affecting the internal stability of the magnetic core. If the particle size difference is too large, there will be gaps in the internal connection, resulting in unstable internal structure of the magnetic core, thereby affecting the pressure bearing degree of the magnetic core. During sintering, because the temperature of the setter is too high, there will be a substitution reaction with the zinc in the manganese-zinc ferrite, and the electrical properties of the product in contact with the refractory material will deteriorate sharply, resulting in a decrease in the performance of the magnetic core. In view of this, We propose a high pressure manganese zinc ferrite core