Method for preparing rare-earth-doped manganese-zinc ferrite material

A manganese zinc ferrite, rare earth doping technology, applied in the field of magnetic materials, can solve the problem of unsatisfactory magnetic permeability

Inactive Publication Date: 2019-04-02
ZHONGDE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The magnetic permeability of the soft ferrite in the prior art cannot meet the needs of the prior art, so it is urgent to design a soft ferrite material with high magnetic permeability to solve the problems in the prior art

Method used

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  • Method for preparing rare-earth-doped manganese-zinc ferrite material

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Experimental program
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Effect test

Embodiment 1

[0022] A preparation method of a rare earth-doped manganese-zinc ferrite material, comprising the steps of:

[0023] S1, adding the main components of manganese oxide, zinc oxide, and iron oxide into a ball mill for ball milling to obtain a mixture A; wherein the molar ratio of manganese oxide, zinc oxide, and iron oxide is 35:55:9;

[0024] S2, pre-calcining the mixture A, and then cooling to room temperature to obtain a pre-calcined material;

[0025] S3. Add calcined material, vanadium oxide, niobium pentoxide, bismuth oxide, molybdenum oxide, phosphorus pentoxide, copper oxide, and composite rare earth additives into a ball mill for secondary ball milling, and dry to obtain mixture B; the composite rare earth The additive is composed of cerium oxide, yttrium oxide and lanthanum oxide;

[0026] S4, add polyvinyl alcohol solution to mixing granulation in mixture B, then pass through 40 mesh sieves, obtain granular material; The mass ratio of mixture B and polyvinyl alcohol ...

Embodiment 2

[0030] A preparation method of a rare earth-doped manganese-zinc ferrite material, comprising the steps of:

[0031] S1, adding the main components of manganese oxide, zinc oxide, and iron oxide into a ball mill for ball milling to obtain a mixture A; wherein the molar ratio of manganese oxide, zinc oxide, and iron oxide is 37:53:11;

[0032] S2, pre-calcining the mixture A, and then cooling to room temperature to obtain a pre-calcined material;

[0033] S3. Add calcined material, vanadium oxide, niobium pentoxide, bismuth oxide, molybdenum oxide, phosphorus pentoxide, copper oxide, and composite rare earth additives into a ball mill for secondary ball milling, and dry to obtain mixture B; the composite rare earth The additive is composed of cerium oxide, yttrium oxide and lanthanum oxide;

[0034] S4, add polyvinyl alcohol solution to mixing granulation in mixture B, then pass 80 mesh sieves, obtain granular material; The mass ratio of mixture B and polyvinyl alcohol solutio...

Embodiment 3

[0038] A preparation method of a rare earth-doped manganese-zinc ferrite material, comprising the steps of:

[0039] S1. Add the main components of manganese oxide, zinc oxide, and iron oxide into a ball mill for ball milling to obtain mixture A; wherein the molar ratio of manganese oxide, zinc oxide, and iron oxide is 35:55:9; the ball mill speed is 150r / min, and the ball milling time for 6h;

[0040] S2. Pre-calcining the mixture A, and then cooling to room temperature to obtain a pre-calcining material; the pre-calcining temperature is 860° C., and the pre-calcining time is 90 minutes;

[0041] S3. Add pre-fired material, vanadium oxide, niobium pentoxide, bismuth oxide, molybdenum oxide, phosphorus pentoxide, copper oxide, and composite rare earth additives into a ball mill for secondary ball milling, and dry to obtain mixture B; pre-fired material, The mass ratio of vanadium oxide, niobium pentoxide, bismuth oxide, molybdenum oxide, phosphorus pentoxide, copper oxide, an...

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Abstract

The invention relates to the technical field of magnetic materials, and discloses a method for preparing a rare-earth-doped manganese-zinc ferrite material, comprising the steps of adding manganese oxide, zinc oxide and iron oxide as main components to a ball mill and conducting ball milling to obtain a mixture A; pre-firing the mixture A, and then conducting cooling to room temperature to obtaina pre-fired material; adding the pre-sintered material, vanadium oxide, niobium oxide, bismuth trioxide, molybdenum oxide, phosphorus pentoxide, copper oxide and a composite rare earth additive into aball mill, and conducting secondary ball milling and drying to obtain a mixture B, wherein the composite rare earth additive is composed of cerium oxide, yttrium oxide and lanthanum oxide; adding a polyvinyl alcohol solution to the mixture B, conducting mixing and granulation, and then conducting sieving by a sieve of 40-80 mesh, so as to obtain pellets; adding the pellets into a molding machinefor pressing, so as to obtain a blank; and sintering the blank and conducting cooling. The rare-earth-doped manganese-zinc ferrite material prepared by the method of the invention has high initial magnetic conductivity and saturation magnetic flux density.

Description

technical field [0001] The invention relates to the technical field of magnetic materials, in particular to a preparation method of a rare earth-doped manganese-zinc ferrite material. Background technique [0002] 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. With the development of the electronics industry and the expansion of application fields, the requirements for magnetic materials are also getting higher and higher. The magnetic permeability of the soft ferrite in the prior art cannot meet the requirements of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622C04B35/626C04B35/634
CPCC04B35/2658C04B35/622C04B35/62605C04B35/63416C04B2235/3225C04B2235/3227C04B2235/3229C04B2235/3239C04B2235/3251C04B2235/3256C04B2235/3281C04B2235/3298C04B2235/34
Inventor 瞿德林王久如李丛俊
Owner ZHONGDE ELECTRONICS
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