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Soft magnetic ferrite material prepared based on nanoparticles and preparation method thereof

A technology of soft magnetic ferrite and nanoparticles, which is applied in magnetic materials, inductance/transformer/magnet manufacturing, magnetic objects, etc., can solve the problems of unstable performance of composite materials, affecting the overall performance of materials, and poor interface compatibility, etc., to achieve Effects of preventing aggregation of nanoparticles, improving stability, and reducing price

Active Publication Date: 2020-04-10
安徽朗基新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, soft magnetic ferrite materials are made of nanoparticles. Although soft magnetic ferrite materials can be prepared, nanoparticle nanomaterials have strong van der Waals force, are easy to agglomerate, and have poor interface compatibility, resulting in unstable performance of composite materials.
[0004] The existing Chinese patent document CN109694243A discloses a soft magnetic ferrite material prepared by using nanoparticles and its preparation process, including the following parts by weight: 65-75 parts of ferric oxide, 20-30 parts of manganese oxide, 5-30 parts of zinc oxide 15 parts, 1-2 parts of tin dioxide, 3-5 parts of silicon dioxide, 0.5-1.5 parts of copper oxide, 2-4 parts of niobium pentoxide, 1-3 parts of high-purity strontium carbonate, 0.5-0.5 parts of trimanganese tetraoxide 1 part and 0.2 parts of trace additives, the nano-particles such as tin dioxide and silicon dioxide used in the preparation of this material are prone to agglomeration, which affects the overall performance of the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A soft magnetic ferrite material prepared based on nanoparticles in this embodiment includes the following raw materials in parts by weight:

[0031] 55 parts of iron oxide, 15 parts of manganese oxide, 10 parts of zinc oxide, 5 parts of nano lithium manganate, 4 powders of nano additives, 3 powders of modified micro-silica powder, 2 parts of rare earth additives.

[0032] The nano additive in this embodiment is nano ceria.

[0033] The preparation method of the modified microsilica powder in this embodiment is to place the microsilica powder in a reaction bottle, then add absolute ethanol to prepare a suspension, and then add sodium silicate solution and aluminum sulfate solution to it to adjust the pH value 4.5, and then filter, wash, and dry to obtain the modified silica fume.

[0034] The rare earth additives in this example are compounded by SC powder and Y powder at a weight ratio of 1:2.

[0035] A kind of preparation method of the soft magnetic ferrite materia...

Embodiment 2

[0044] A soft magnetic ferrite material prepared based on nanoparticles in this embodiment includes the following raw materials in parts by weight:

[0045] 65 parts of iron oxide, 25 parts of manganese oxide, 15 parts of zinc oxide, 15 parts of lithium manganate nanometer, 10 parts of nano-additive powder, 6 parts of modified micro-silica powder, and 6 parts of rare earth additive.

[0046] The nano additive in this embodiment is nano vanadium oxide.

[0047] The preparation method of the modified microsilica powder in this embodiment is to place the microsilica powder in a reaction bottle, then add absolute ethanol to prepare a suspension, and then add sodium silicate solution and aluminum sulfate solution to it to adjust the pH value 5.5, and then filtered, washed, and dried to obtain modified silica fume.

[0048] The rare earth additives in this example are compounded by SC powder and Y powder at a weight ratio of 1:5.

[0049] A kind of preparation method of the soft m...

Embodiment 3

[0058] A soft magnetic ferrite material prepared based on nanoparticles in this embodiment includes the following raw materials in parts by weight:

[0059] 60 parts of iron oxide, 20 parts of manganese oxide, 12.5 parts of zinc oxide, 10 parts of lithium manganese nanometer, 7 powders of nano additives, 4.5 parts of modified microsilica powder, and 4 parts of rare earth additives.

[0060] The nano-additive in this embodiment is nano-alumina.

[0061] The preparation method of the modified microsilica powder in this embodiment is to place the microsilica powder in a reaction bottle, then add absolute ethanol to prepare a suspension, and then add sodium silicate solution and aluminum sulfate solution to it to adjust the pH value 5.0, and then filtered, washed and dried to obtain modified silica fume.

[0062] The rare earth additives in this example are compounded by SC powder and Y powder at a weight ratio of 1:2.5.

[0063] A kind of preparation method of the soft magnetic...

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Abstract

The present invention discloses a soft magnetic ferrite material prepared based on nanoparticles. The soft magnetic ferrite material is prepared from the following raw materials in parts by weight: 55-65 parts of iron oxide, 15-25 parts of manganese oxide, 10-15 parts of zinc oxide, 5-15 parts of lithium manganate nanoparticles, 4-10 parts of nano additive, 3-6 parts of modified silica fume and 2-6 parts of rare earth additive. The soft magnetic ferrite material is prepared from conventional iron oxide, manganese oxide and zinc oxide; the added lithium manganate nanoparticles have the advantages of being low in price, high in potential, environmentally friendly, high in safety performance and the like, performance characteristics such as magnetic conductivity and electrical resistivity ofthe material can be perfected by matching with the added nanometer additive, and the added rare earth additive is formed by compounding SC powder and Y powder and can achieve the effects of activatingraw materials and improving combination of the raw materials.

Description

technical field [0001] The invention relates to the technical field of magnetic materials, in particular to a soft magnetic ferrite material prepared based on nanoparticles and a preparation method thereof. Background technique [0002] Soft magnetic ferrite materials Such materials are easy to magnetize and demagnetize under a weak magnetic field, such as zinc-chromium ferrite and nickel-zinc ferrite. Soft magnetic ferrite is a kind of ferrite material with wide application, many varieties, large quantity and high output value. It is mainly used as a variety of inductive components, such as filter cores, transformer cores, wireless electromagnetic cores, and magnetic tape recording and video heads, and is also a key material for magnetic recording components. Soft ferrite is divided into the following nine types: pure iron and low carbon steel, iron-silicon alloy, iron-aluminum alloy, iron-silicon-aluminum alloy, nickel-iron alloy, iron-cobalt alloy, soft ferrite, amorphou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/34H01F41/00
CPCH01F1/344H01F41/00
Inventor 王涛徐林东
Owner 安徽朗基新材料科技有限公司