A kind of preparation method of fe-cu-nb-ni-p-b nanocrystalline magnetic core
A fe-cu-nb-ni-p-b, nanocrystalline technology, applied in inductor/transformer/magnet manufacturing, magnetic materials, magnetic objects, etc., can solve the problem of low product qualification rate, unstable magnetic permeability, easy to appear Damage and other problems, to achieve the effects of excellent comprehensive performance, low production cost, and increased quality factor
Active Publication Date: 2016-05-04
青县择明朗熙电子器件有限公司
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Problems solved by technology
However, the existing nanocrystalline magnetic cores still have disadvantages such as unstable magnetic permeability and large loss, and the pass rate of existing production process products is not high, and they are prone to damage
Method used
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Experimental program
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Embodiment Construction
[0015] A preparation method of Fe-Cu-Nb-Ni-P-B nanocrystalline magnetic core, comprising the following steps:
[0016] (1) Vacuum isothermal annealing the iron-based amorphous thin strips prepared by mechanical alloying at a temperature of 550°C and a vacuum degree of 0.0015 Pa for 2 hours, and then air-cooled to room temperature to obtain nanocrystalline thin strips; among them, the The mass percentage of each component of the iron-based amorphous thin strip is: Fe63.5%, Ni13%, Gu1.5%, Nb3%, P12%, B7%, its bandwidth is 12mm, and the strip thickness is 25μm;
[0017] (2) Crushing the prepared nanocrystalline thin strips to obtain nanocrystalline metal powder, and then dividing the nanocrystalline metal powder into A and B materials according to the weight ratio of 24% and 76%;
[0018] (3) Take material A and add 0.8% isopropyl tris(dioctylpyrophosphate acyloxy) titanate, stir at 3000 rpm for 10 minutes at high speed, dry, crush and grind into powder, pass through a 200-mesh s...
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Abstract
The invention discloses a method for preparing a Fe-Cu-Nb-Ni-P-B nanocrystalline magnetic core. The method specifically comprises the following steps that vacuum isothermal annealing is conducted on an iron-based amorphous thin band, so that a nanocrystalline thin band is manufactured; the manufactured nanocrystalline thin band is broken, so that nanocrystalline metal powder is obtained; the nanocrystalline metal powder is then divided into a material A and a material B which are unequal in quantity; isopropyl tri(dioctylpyrophosphate) titanate is added to the material A so that the material A can be treated, and the material B is firstly treated by glycerin and wool fat and then treated by carbamide, wollastonite in powder and carboxymethyl cellulose; the treated material A and the treated material B are evenly mixed, a cationoid phenylalanine solution is added, a mixture of the material A and the material B is compressed, the surface of the formed magnetic core is coated with magnetic core glue 400-36, the glue is solidified, and therefore the finished product is obtained. The finished magnetic core prepared through the method has the advantages of being low in loss value, resistant to high temperature, good in overall performance and the like.
Description
technical field [0001] The invention relates to a preparation method of a Fe-Cu-Nb-Ni-P-B nanocrystalline magnetic core, belonging to the technical field of magnetic materials. Background technique [0002] Iron-based nanocrystalline soft magnetic materials are used for switching power supply choke coils, high magnetic permeability, low coercive force and low high-frequency loss, good hardness, wear resistance and corrosion resistance, good temperature and environmental stability, Its comprehensive magnetic properties are far superior to those of silicon steel, ferrite, permalloy and amorphous alloys. It is currently recognized as a soft magnetic material with excellent comprehensive properties in the world. At present, it has been widely used in the manufacture of common mode choke coils, high-frequency switching power supplies, high-frequency inverters, high-sensitivity fidelity magnetic heads, high-performance magnetic amplifiers and other components. However, the existi...
Claims
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IPC IPC(8): H01F41/02H01F1/147B22F1/02
Inventor 司雪楠
Owner 青县择明朗熙电子器件有限公司