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Device and method for continuously preparing aluminum-nickel-cobalt nanoparticles

A nanoparticle and preparation device technology, which is applied in the manufacture of inductors/transformers/magnets, magnetic materials, electrical components, etc., and can solve problems such as difficulties in metal nanoparticles

Pending Publication Date: 2021-11-23
杨杭福
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, a small amount of AlNiCo and SmCo permanent magnet nanocomposite can improve the stability of SmCo permanent magnet after compounding, while AlNiCo and a small amount of SmCo permanent magnet nanocomposite can improve the magnetic properties of AlNiCo after compounding, while traditional It is difficult to prepare metal nanoparticles by the chemical method, and the high-energy ball milling method is easy to introduce new impurities, so it is necessary to develop a method for rapid continuous AlNiCo nanoparticles

Method used

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  • Device and method for continuously preparing aluminum-nickel-cobalt nanoparticles
  • Device and method for continuously preparing aluminum-nickel-cobalt nanoparticles

Examples

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specific example 1

[0013] The preparation method of nanoparticle comprises the following steps:

[0014] 1) Alnico master alloy preparation: according to the formula (by mass percent): Al (aluminum) 8, Co (cobalt) 38, Ni (nickel) 14, Cu (copper) 4, Ti (titanium) 8 and Fe (Iron) 28 Weigh AlNiCo raw material powder, 200g in total. After fully grinding and mixing, the powder is formed into a block at 30MPa, and the block is put into a sintering furnace, and argon gas is introduced, and at 1250 oC Sintering under the condition of 6h, after sintering, cool down to room temperature with the furnace, then put the sintered block under the orientation magnetic field of 5000 Oe, keep it warm for 10min, and obtain the AlNiCo master alloy after cooling.

[0015] 2) Preparation of AlNiCo nanoparticles: Wire-cut the AlNiCo master alloy to obtain a 2cmⅹ2cmⅹ2cm master alloy block. Use an ultrasonic cleaning agent to clean the AlNiCo alloy block for 15 minutes. After drying, use it as a target material and put i...

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Abstract

In order to solve the problem of difficulty in preparing the aluminum-nickel-cobalt nanoparticles, the invention discloses a device and a method for continuously preparing the aluminum-nickel-cobalt nanoparticles, the continuous preparation device for preparing, cleaning and collecting the nanoparticles by utilizing laser ablation is designed, and the main preparation steps comprise preparation of an aluminum-nickel-cobalt master alloy, preparation of the nanoparticles, collection and aging tempering. The nano-particles obtained by the preparation device and method are uniform in size and small in particle size, can be used as a raw material of a nano-composite permanent magnet material, and are suitable for small-scale continuous production.

Description

technical field [0001] The invention relates to a device and method for continuously preparing AlNiCo nanoparticles, belonging to the field of permanent magnet materials. Background technique [0002] With the research on permanent magnet alloys, high-performance samarium-cobalt permanent magnet alloys, neodymium-iron-boron permanent magnet alloys and nanocomposite permanent magnet materials have been born one after another, but due to their low temperature stability and low Curie temperature, etc. Factors limit the application and development in aerospace, precision instruments, nuclear power and other fields. The first-generation permanent magnet material AlNiCo alloy, with its low temperature coefficient of remanence (0.02% / ℃), low temperature coefficient of coercive force (0.03% / ℃), high Curie temperature (T C = 750~890℃), high saturation magnetic induction and good corrosion resistance, etc., still play an irreplaceable role in the field with strict magnetic stability...

Claims

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Application Information

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IPC IPC(8): H01F41/02H01F1/055
CPCH01F41/0253H01F1/0551H01F1/0557
Inventor 杨杭福吴琼葛洪良
Owner 杨杭福
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