Preparation method for micrometer-particle-diameter FeCo particles

A technology of micron particles and particles, which is applied in the field of magnetic material preparation, can solve the problems of large specific surface area, high pressure, and difficulty in preparing dense blocks of nanoparticles, and achieve high purity, simple process, and uniform composition and structure. good sex effect

Active Publication Date: 2013-11-27
北京中磁新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large specific surface area of ​​nanoparticles, the pressure required for particle deformation during the pressing process is large, and it is difficult to prepare dense blocks under conventional pressure by powder metallurgy compaction.

Method used

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  • Preparation method for micrometer-particle-diameter FeCo particles
  • Preparation method for micrometer-particle-diameter FeCo particles
  • Preparation method for micrometer-particle-diameter FeCo particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]According to the preparation method of the present invention, FeCo particles with a particle size of 1.5 microns are prepared. Specific steps are as follows:

[0034] i) 0.2380g CoCl with a molar ratio of 1:1 2 ·6H 2 O and 0.2780 g FeSO 4 ·7H 2 O is placed in a container A with a volume of 50 mL, and 1 mL of distilled water is added to the container A, and stirred with a glass rod until fully dissolved;

[0035] ii) Weigh 10mL (42 times CoCl 2 ·6H 2 The mass of O) n-hexane, placed in a suitable size container B; measure 2.5mL n-butanol into container B, stir with a glass rod for 10 minutes; then add 2.5g hexadecyl trimethyl to container B ammonium bromide (CTAB), add 1mL distilled water at the same time, stir for 10 minutes;

[0036] iii) Place container B treated in step ii) on a heating stirrer, heat to 30°C, and stir for 10 minutes;

[0037] iv) Slowly pour the solution in container A treated in step i) into container B in step iii), and stir for 10 minutes; ...

Embodiment 2

[0046] Adopt the method provided by the invention to prepare the FeCo particle that particle diameter is about 4 microns, concrete steps are as follows:

[0047] i) 0.2810g CoSO with a molar ratio of 1:1 4 ·7H 2 O and 0.2780 g FeSO 4 ·7H 2 O is placed in a container A with a volume of 50 mL, and 1 mL of distilled water is added to the container A, and stirred with a glass rod until fully dissolved;

[0048] ii) Weigh 12mL (42 times CoCl 2 ·6H 2 The mass of O) n-hexane, placed in a suitable size container B; measure 3mL n-butanol into container B, stir with a glass rod for 10 minutes; then add 3g hexadecyl trimethyl bromide to container B ammonium (CTAB), add 1mL distilled water at the same time, stir for 10 minutes;

[0049] iii) Place container B treated in step ii) on a heating stirrer, heat to 30 degrees Celsius, and stir for 15 minutes;

[0050] iv) Slowly pour the solution in container A treated in step i) into container B in step iii), and stir for 10 minutes;

...

Embodiment 3

[0059] FeCo particles with a particle size of about 3.5 microns were prepared by the method provided by the present invention.

[0060] i) 0.2810g CoSO with a molar ratio of 1:1 4 ·7H 2 O and 0.2780 g FeSO 4 ·7H 2 O is placed in a container A with a volume of 50 mL, and 1 mL of distilled water is added to the container A, and stirred with a glass rod until fully dissolved;

[0061] ii) Weigh 20mL (84 times the CoCl 2 ·6H 2 The mass of O) n-hexane, placed in a suitable size container B; measure 6.5mL n-butanol into container B, stir with a glass rod for 15 minutes; then add 9g hexadecyl trimethyl bromide to container B ammonium chloride (CTAB), while adding 1 mL of distilled water, stirring for 15 minutes;

[0062] iii) Place container B treated in step ii) on a heating stirrer, heat to 50 degrees Celsius, and stir for 10 minutes;

[0063] iv) Slowly pour the solution in container A treated in step i) into container B in step iii), and stir for 15 minutes;

[0064] v) A...

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Abstract

The invention discloses a preparation method for micrometer-particle-diameter FeCo particles, and belongs to the technical field of preparation of magnetic materials. By controlling a microemulsion chemical reaction process, reduction reaction is carried out on ferrous iron elements and cobaltous elements through hydrazine hydrate, and by adjusting and controlling reaction temperature and time, the micrometer-particle-diameter FeCo particles are synthesized directly. The micrometer-particle-diameter FeCo particles prepared through the chemical method are high in purity, are uniform in content and structure, can be used for preparing high-performance Fe-Co-radical composite soft magnetic materials, and are suitable for preparing a large-power soft magnetic element which is complex in shape, small and multifunctional. The preparation method for the micrometer-particle-diameter FeCo particles has the advantages of being abundant in raw material source, simple in process, small in consumption of recourses of water and electricity, environmentally friendly, suitable for industrialized production and the like. The preparation method for the micrometer-particle-diameter FeCo particles widens the search and application range of the chemical preparation process in the field of metal and alloy, and has great scientific significance for developing the new preparation technology of the high-performance soft magnetic materials.

Description

technical field [0001] The invention relates to a preparation method for directly synthesizing FeCo particles with a micron particle size by controlling a chemical reaction process in a microemulsion, belongs to the technical field of magnetic material preparation, and particularly relates to soft magnetic materials. Background technique [0002] The basic purpose of soft magnetic materials is to obtain a higher magnetic induction intensity under the action of a lower external field, and use the interaction between electromagnetics to realize the mutual conversion between electric energy, magnetic energy and mechanical energy. Such materials are widely used in the development of modern society as key materials such as various motors, transformers and magnetic components. Metal-based soft magnetic materials are one of the major categories, including pure metal soft magnetic materials such as Fe, Co and Ni, as well as binary, ternary or multi-element alloys containing these th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24H01F1/147H01F1/22
Inventor 杨白曹莹张蕾于荣海
Owner 北京中磁新材科技有限公司
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