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Ferrite material and preparation method and application thereof

A ferrite material and application technology, applied in the direction of magnetic materials, inorganic material magnetism, inductor/transformer/magnet manufacturing, etc., can solve the problems of unfavorable environment and human health, complicated production process, high pre-burning temperature, etc., and achieve high dielectric strength Effects of electric constant and Curie temperature, reduction of production cost, and stable preparation process

Active Publication Date: 2021-02-12
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new type of iron oxide (Ferrit) material made from bismuth-iron composite particles can have high specific capacitance values at room temperatures while also having low curing points that make it ideal for use in electronic devices such as inductors or filters used in communication systems.

Problems solved by technology

Technological Problem addressed in this patents relates to improving the performance (smallness) and integrality of microelectronic devices such as filters due to increasing demand for smaller sizes while maintaining good electrical properties like inductance per unit area. Current solutions involve reducing component dimensions without sacrificially addressing these issues.

Method used

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  • Ferrite material and preparation method and application thereof
  • Ferrite material and preparation method and application thereof

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Embodiment 1

[0066] The present embodiment provides a kind of ferrite material, and the chemical formula of described ferrite material is (Bi 1.3 Ca 0.5 Y 1.2 Fe 4.6 Zr 0.3 W 0.1 o 12 ) The raw material of the ferrite material includes Y with a purity of 99.95%. 2 o 3 , with a purity of 99.95% Bi 2 o 3 , CaCO with a purity of 99% 3 , with a purity of 99.2% ZrO 2 , with a purity of 99.5% Fe 2 o 3 , and WO with a purity of 99.5% 3 .

[0067] Its preparation method comprises the following steps:

[0068] (1) Add the raw material of the ferrite material according to the above chemical formula ratio, alcohol and zirconia grinding balls into the ball milling tank according to the weight ratio of 1000:1000:4000, and ball mill for 15 hours at a ball milling speed of 60r / min. Put the ball-milled slurry into an oven and dry at a drying temperature of 120°C for 16 hours, pass the dried powder through a 60-mesh sieve into an air sintering furnace for pre-sintering, and heat up to the hi...

Embodiment 2

[0071] This embodiment provides a ferrite material, the chemical formula of the ferrite material is Bi 1.3 Ca 0.5 Y 1.2 Fe 4.55 Zr 0.4 W 0.05 o 12 . The raw material of the ferrite material includes Y with a purity of 99.95%. 2 o 3 , with a purity of 99.95% Bi 2 o 3 , CaCO with a purity of 99% 3 , with a purity of 99.2% ZrO 2 , with a purity of 99.5% Fe 2 o 3 , and WO with a purity of 99.5% 3 .

[0072] Its preparation method comprises the following steps:

[0073] (1) Add the raw material of the ferrite material according to the above chemical formula ratio, alcohol and zirconia grinding balls into the ball milling tank according to the weight ratio of 1000:1000:4000, and ball mill for 10 hours at a ball milling speed of 100r / min. Put the ball-milled slurry into an oven and dry at a drying temperature of 180°C for 12 hours, pass the dried powder through a 60-mesh sieve into an air sintering furnace for pre-sintering, and heat up to the highest temperature at a...

Embodiment 3

[0076] This embodiment provides a ferrite material, the chemical formula of the ferrite material is Bi 1.3 Ca 0.4 Y 1.3 Fe 4.65 Zr 0.3 W 0.05 o 12 . The raw material of the ferrite material includes Y with a purity of 99.95%. 2 o 3 , with a purity of 99.95% Bi 2 o 3 , CaCO with a purity of 99% 3 , with a purity of 99.2% ZrO 2 , with a purity of 99.5% Fe 2 o 3 , and WO with a purity of 99.5% 3 .

[0077] Its preparation method comprises the following steps:

[0078] (1) Add the raw material of the ferrite material according to the above chemical formula ratio, alcohol and zirconia grinding balls into the ball milling tank according to the weight ratio of 1000:1000:4000, and ball mill for 10 hours at a ball milling speed of 100r / min. Put the ball-milled slurry into an oven and dry at a drying temperature of 180°C for 12 hours, pass the dried powder through a 60-mesh sieve into an air sintering furnace for pre-sintering, and heat up to the highest temperature at a...

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Abstract

The invention provides a ferrite material as well as a preparation method and application thereof. The chemical formula of the ferrite material is Bi1.3Ca<x+2y>Y<1.7-x-2y>Fe<5-x-y>ZrxWyO12, wherein xranges from 0.3 to 0.4, and y ranges from 0.01 to 1. The preparation method comprises the following steps: (1) mixing and sintering raw materials of the ferrite material to obtain a precursor of the ferrite material; and (2) mixing, drying, molding and sintering the precursor of the ferrite material in the step (1) again to obtain the ferrite material. Bi and Ca elements in the ferrite material can replace part of rare earth Y elements, Zr and W elements can replace part of Fe ions, and proper parameters such as 4piMs, delta H and Tc are obtained by utilizing electromagnetic characteristics and compensation points of the Bi and Ca elements and the Zr and W elements. Meanwhile, the corresponding preparation process is stable, good in repeatability and suitable for mass production, and the production cost is greatly reduced.

Description

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Claims

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Application Information

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Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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