Rare earth high-magnetic-permeability soft magnetic ferrite and preparation method thereof

A soft ferrite and high permeability technology, applied in the field of rare earth high permeability soft ferrite and its preparation, can solve the problems of loss, unsatisfactory Curie temperature of frequency characteristics and the like, and meet the requirements of anti-electromagnetic interference. , the effect of enhancing density and promoting grain growth

Inactive Publication Date: 2015-09-09
MAANSHAN KEXIN CONSULTING
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Problems solved by technology

Ferrite magnetic powder and magnetic core with high magnetic flux density are essential for miniaturization and light weight of inductors, filters, pulse transformers and other products in electronic equipment such as program-controlled communication, digital technology, and network communication color TVs. For electronic

Method used

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Embodiment Construction

[0013] The present invention will be described in detail below through specific examples.

[0014] A rare-earth high-permeability soft ferrite and its preparation method are prepared from the following raw materials in parts by weight (kg): ferric oxide 61, zinc oxide 11, manganese oxide 18, copper oxide 6, lanthanum oxide 0.4, tantalum pentoxide 0.5, carbonyl iron powder 0.3, chlorinated polyethylene 8, carbon powder 0.9, sodium lignosulfonate 1, silicone resin 8, appropriate amount of deionized water;

[0015] A kind of rare earth high magnetic permeability soft magnetic ferrite and its preparation method described in the present invention are made by the following specific steps:

[0016] (1) Add ferric oxide, manganese oxide, zinc oxide, copper oxide, carbon powder and deionized water into the ball mill for wet ball milling and mix evenly. The ball milling time is 6 hours;

[0017] (2) Put the powder obtained in step (1) in a sintering furnace for pre-sintering at 1000°C,...

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Abstract

The present invention discloses a rare earth high-magnetic-permeability soft magnetic ferrite and a preparation method thereof, wherein the rare earth high-magnetic-permeability soft magnetic ferrite is prepared from the following raw materials by weight: 55-65 parts of ferroferric oxide, 1-13 parts of zinc oxide, 15-18 parts of manganese oxide, 4-8 parts of copper oxide, 0.4-0.6 part of lanthanum oxide, 0.2-0.6 part of tantalum pentoxide, 0.3-0.4 part of carbonyl iron powder, 6-10 parts of chlorinated polyethylene, 0.4-1 part of carbon powder, 1-2 parts of sodium lignin sulfonate, 6-9 parts of an organosilicon resin, and a proper amount of deionized water. The rare earth high-magnetic-permeability soft magnetic ferrite of the present invention has characteristics of high magnetic-permeability, low loss, easy operation, low environmental pollution, cost reducing, high qualification rate, and stable quality.

Description

technical field [0001] The invention relates to the field of soft ferrite materials, in particular to a rare earth high magnetic permeability soft ferrite and a preparation method thereof. Background technique [0002] Ferrite is a metal composite oxide with ferromagnetism. In terms of its electromagnetic properties, the resistivity of ferrite is much larger than that of metal and alloy magnetic materials, and it also has high dielectric properties. It can also show high magnetic permeability at high frequencies. Therefore, ferrite has become a widely used non-metallic magnetic material in the field of high frequency and weak current. Ferrite magnetic powder and magnetic core with high magnetic flux density are essential for miniaturization and light weight of inductors, filters, pulse transformers and other products in electronic equipment such as program-controlled communication, digital technology, and network communication color TVs. For electronic materials, continuou...

Claims

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Application Information

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IPC IPC(8): C04B35/40C04B35/622
Inventor 汪义卉
Owner MAANSHAN KEXIN CONSULTING
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