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Lanthanum-cobalt permanent magnetic ferrite and preparation method thereof

A technology of permanent ferrite and ferrite, which is applied in the manufacture of inductors/transformers/magnets, the magnetism of inorganic materials, electrical components, etc., to achieve the effects of shortening sintering time, excellent comprehensive magnetic properties, and reducing energy consumption

Pending Publication Date: 2021-06-25
江门江益磁材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional preparation process of ferrite materials, iron oxide and Sr or Ba carbonate are used as raw materials and manufactured by powder metallurgy, while the traditional M-type magnetoplumbite structure Sr ferrite and Ba Ferrite can no longer meet the above actual requirements

Method used

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  • Lanthanum-cobalt permanent magnetic ferrite and preparation method thereof
  • Lanthanum-cobalt permanent magnetic ferrite and preparation method thereof
  • Lanthanum-cobalt permanent magnetic ferrite and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] This embodiment provides a kind of lanthanum cobalt permanent magnet ferrite, comprising the molecular formula of Sr 1-x-y Ca x La y Fe 2n-z co z o 19 The main phase of ferrite, where x, y, z represent the added molar amount of each main metal element, the value of x is 0.2, the value of y is 0.384, the value of z is 0.32, and the value of n is 5.3 ;

[0038] The raw materials for selecting the main phase of ferrite are as follows:

[0039] Fe 2 o 3 Powder (purity ≥ 99.3%, original average particle size of particles: 0.75um);

[0040] SrCO 3 Powder (purity ≥ 99%, original average particle size of particles: 1.0um);

[0041] La 2 o 3 Powder (purity ≥ 99%, original average particle size of particles: 2.0um);

[0042] co 3 o 4 Powder (purity ≥ 99.3%, original average particle size of particles: 0.8um);

[0043] CaCO 3 Powder (purity ≥ 99.9%, original average particle size of particles: 2um);

[0044] The lanthanum cobalt permanent magnet ferrite also incl...

Embodiment 2

[0060] This embodiment provides a kind of lanthanum cobalt permanent magnet ferrite, comprising the molecular formula of Sr 1-x-y Ca x La y Fe 2n-z co z o 19 The main phase of ferrite, where x, y, z represent the added molar amount of each main metal element, the value of x is 0.25, the value of y is 0.396, the value of z is 0.33, and the value of n is 5.15 ;

[0061] The raw materials for selecting the main phase of ferrite are as follows:

[0062] Fe 2 o 3 Powder (purity ≥ 99.3%, original average particle size of particles: 0.75um);

[0063] SrCO 3 Powder (purity ≥ 99%, original average particle size of particles: 1.0um);

[0064] La 2 o 3 Powder (purity ≥ 99%, original average particle size of particles: 2.0um);

[0065] co 3 o 4 Powder (purity ≥ 99.3%, original average particle size of particles: 0.8um);

[0066] CaCO 3 Powder (purity ≥ 99.9%, original average particle size of particles: 2um);

[0067] The lanthanum cobalt permanent magnet ferrite also in...

Embodiment 3

[0083] This embodiment provides a kind of lanthanum cobalt permanent magnet ferrite, comprising the molecular formula of Sr 1-x-y Ca x La y Fe 2n-z co z o 19 The ferrite main phase, where x, y, z represent the added molar amount of each main metal element, the value of x is 0.18, the value of y is 0.377, the value of z is 0.29, and the value of n is 5.4 ;

[0084] The raw materials for selecting the main phase of ferrite are as follows:

[0085] Fe 2 o 3 Powder (purity ≥ 99.3%, original average particle size of particles: 0.75um);

[0086] SrCO 3 Powder (purity ≥ 99%, original average particle size of particles: 1.0um);

[0087] La 2 o 3 Powder (purity ≥ 99%, original average particle size of particles: 2.0um);

[0088] co 3 o 4 Powder (purity ≥ 99.3%, original average particle size of particles: 0.8um);

[0089] CaCO 3 Powder (purity ≥ 99.9%, original average particle size of particles: 2um);

[0090] The lanthanum cobalt permanent magnet ferrite also includ...

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Abstract

The invention belongs to the technical field of permanent magnetic materials, and discloses lanthanum-cobalt permanent magnetic ferrite and a preparation method thereof. The lanthanum-cobalt permanent magnetic ferrite comprises a ferrite main phase with a molecular formula of Sr<1-x-y>Ca<x>La<y>Fe<2n-z>Co O<19>, x, y and z represent the adding molar quantity of main metal elements, the value range of x is 0.17-0.3, the value range of y is 0.348-0.42, the value range of z is 0.29-0.35, and the value range of n is 5.1-5.4. The lanthanum-cobalt permanent magnetic ferrite further comprises an adding phase and a dispersing agent, wherein the adding phase is a compound containing at least one element of B, Si or Ca. According to the lanthanum-cobalt permanent magnetic ferrite disclosed by the invention, the prepared lanthanum-cobalt permanent magnetic ferrite achieves more excellent comprehensive magnetic performance by adjusting the dosage of a formula and a preparation process.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet materials, and in particular relates to a lanthanum cobalt permanent magnet ferrite and a preparation method thereof. Background technique [0002] Permanent ferrite material is a functional material that generates a magnetic field. Its final magnetic properties are generally measured by remanence Br and intrinsic coercive force HCJ. Among them, the high-performance permanent magnet ferrite usually refers to the ferrite that has the advantages of high residual magnetic induction, strong anti-demagnetization performance and low manufacturing cost. Due to these advantages, high-performance permanent ferrites are widely used in industries such as electronics, information, motorcycles, automobiles, and electric tools. [0003] In recent years, with the development of various motors in the direction of light weight, miniaturization and high efficiency, higher requirements have been put forwar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/40C04B35/622C04B35/626H01F1/10H01F41/00
CPCC04B35/2633C04B35/2641C04B35/622C04B35/62605C04B35/6261C04B35/62695H01F1/10H01F41/00C04B2235/3213C04B2235/3208C04B2235/3227C04B2235/3277C04B2235/5436C04B2235/5445C04B2235/3418C04B2235/3409
Inventor 姚少喜邝健忠陈志荣
Owner 江门江益磁材有限公司
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