Fabrication method of broad-band high-conductive manganese-zinc ferrite magnetic core

A manganese-zinc ferrite and manufacturing method technology, which is applied in the direction of inductance/transformer/magnet manufacturing, transformer/inductor magnetic core, inorganic material magnetism, etc., can solve the problem of high cost, reduce the cost of preparation, and eliminate the problem of environmental pollution , The effect of enhancing market competitiveness
CN101521071AInactive Publication Date: 2009-09-02CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2009-09-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a fabrication method of a broad-band high-conductive manganese-zinc ferrite magnetic core, which utilizes manganese-zinc soft magnetic waste as a raw material and obtains compound powder with low impurity content by reinforced lixiviation, reduction and purification and coprecipitation. The compound powder is dried and pre-burned and then refined; then the powder is ground and mixed in a ball mill; an additive is added for spray granulation; and finally the magnetic core is formed by burning after pressing and shaping. The method comprises the steps of first fabricating the pre-burned powder with high purity by wet processing, then adding the additive for improving the frequency characteristic and loss characteristic of materials and adjusting the burning process, thus being capable of stably fabricating the manganese-zinc ferrite magnetic core material of which the magnetic permeability reaches 12K, Curie temperature reaches 130 DEG C and the usage frequency amounts to 300 KHz; and simultaneously, the fabrication method sharply reduces the fabrication cost of the manganese-zinc ferrite magnetic core material and enhances the market competitiveness of products.
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Description

technical field

[0001] The invention belongs to the field of magnetic materials, and relates to a manufacturing method of a broadband high-conductivity manganese-zinc ferrite core. Background technique

[0002] High-permeability ferrite magnetic powder and magnetic core are essential electronic components for miniaturization and lightening of inductors, filters, pulse transformers and other products in electronic equipment such as program-controlled communication, digital technology, and network communication color TVs. Material. The goal of continuously improving the initial magnetic permeability value in magnetic materials has always been the pursuit of engineers and manufacturers engaged in this profession. Our country has used the traditional oxide method to develop high magnetic permeability materials for more than 40 years. Up to now, the high magnetic permeability materials produced by the oxide method can only reach about 10,000, and the performance indicators of th...

Claims

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