Soft magnetic ferrite high in magnetic permeability and saturation induction density

Abstract

The invention discloses soft magnetic ferrite high in magnetic permeability and saturation induction density. The soft magnetic ferrite comprise main ingredients and subsidiary ingredients, wherein the main ingredients comprise, by Moore, 52.5-54% of ferric oxide, 36-37.5% of manganese oxide and 10-12.5% of zinc oxide; the total mass of the main ingredients serves as the basis, and the subsidiary ingredients comprise 100-300 ppm of indium oxide, 300-500 ppm of yttrium oxide, 400-800 ppm of magnesium oxide, 150-300 ppm of niobium oxide, 400-600 ppm of cobaltous oxide, 100-200 ppm of bismuth oxide, 200-500 ppm of vanadium oxide, 100-500 ppm of titanium dioxide, 20-80 ppm of rhenium oxide, 100-200 ppm of copper oxide, 50-150 ppm of zirconium oxide, 20-70 ppm of stannic oxide, 50-200 ppm of tungsten carbide and 500-800 ppm of silicon dioxide.

Description

technical field [0001] The invention relates to the technical field of soft ferrite, in particular to a soft ferrite with high magnetic permeability and high saturation magnetic induction. Background technique [0002] Soft ferrite refers to a magnetic material that is easily magnetized and demagnetized under the action of an external magnetic field. It is often a composite oxide obtained by sintering iron oxide and one or more other metal oxides. The application of soft magnetic materials in industry began at the end of the 19th century, with the rise of electric power and telecommunication technology, and its application range is extremely wide. Soft magnetic materials are not only used in the fields of home appliances, information technology, automobiles and other supporting fields, but more importantly, soft magnetic materials, as the main raw materials for the production of electronic components, have brought a steady stream of demand for them. [0003] With the develo...

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Problems solved by technology

[0003] With the development of the electronics industry and the expansion of application fields, the requirements for magnetic materials are getting higher and higher, and the classification requirements for material properties are more detailed and specialized, but the soft magnetic ferrite in the prior art often has a magnetic permeability And the saturation magnetic induction is not ideal enough. I hope that the corresponding powder index of the product can reach: the initial magnetic permeability is above 3800, and the saturation magnetic induction is > 460mT at 25°C, but the materials currently used cannot guarantee mass production of products that meet this requirement. There is a need for a new ferrite material with high magnetic permeability and high saturation magnetic induction