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Low-loss nanocrystalline alloy soft magnetic material and preparation method thereof

A technology of nanocrystalline alloys and soft magnetic materials, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of affecting wireless charging efficiency, low resistivity, and large eddy current loss

Inactive Publication Date: 2019-02-01
DAYOU SCIENTFIC & TECHNICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional iron-based nanocrystalline alloy, such as the national standard 1K107, has an alloy composition of Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9 The low resistivity is about 90uΩ / cm, and when it is used as a wireless charging and magnetic isolation material, the eddy current loss is large, which seriously affects the wireless charging efficiency

Method used

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  • Low-loss nanocrystalline alloy soft magnetic material and preparation method thereof
  • Low-loss nanocrystalline alloy soft magnetic material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0046] The parts not described in the specific descriptions in the following embodiments are the same as the above descriptions,

[0047] Press Fe 72 Cu 1 Nb 1 V 2 Si 13.5 B 9 N 0.5 La 1 A total of 20Kg of raw materials is prepared in proportion. Nb, B, V, and N are respectively made of ferro-niobium, ferro-boron, and ferro-vanadium nitride master alloys. The order of feeding is to first put ferro-vanadium nitride, pure iron, and ferro-niobium into a non-vacuum induction furnace for melting In the process, iron boron and electrolytic copper are added after complete melting, and silicon and La are added last. The smelting temperature is about 1520°C. After uniform smelting for 100 minutes, it is poured into a cooling casting pan to form a master alloy steel ingot;

[0048] Put the smelted master alloy steel ingot into the intermediate frequency induction melting furnace for secondary remelting, that is, secondary uniform melting, the temperature is about 1300 °C, after ...

Embodiment 2

[0051] The parts not described in the following examples are all the same as in Example 1;

[0052] Press Fe 73 Cu 1 Nb 2 V 1 Si 13.5 B 9 N 0.5 A total of 20Kg of raw materials is prepared in proportion. Nb, B, V, and N are respectively made of ferro-niobium, ferro-boron, and ferro-vanadium nitride master alloys. During furnace smelting, iron boron and electrolytic copper are added after complete melting, and silicon is added last. The smelting temperature is about 1500°C. After uniform smelting for 100 minutes, it is poured into a cooling casting pan to form a master alloy steel ingot;

[0053] Put the smelted master alloy steel ingot into the medium-frequency induction melting furnace for secondary uniform melting at a temperature of about 1300°C. After smelting for 80 minutes, pour the molten steel into the intermediate pressure nozzle bag that is preheated and kept at 1250°C. After the temperature of the liquid steel in the intermediate pressure nozzle bag is stabl...

Embodiment 3

[0056] Press Fe 72.5 Cu 1 Nb 1 V 2 Si 13.5 B 9 N 1 A total of 20Kg of raw materials is prepared in proportion. Nb, B, V, and N are respectively made of ferro-niobium, ferro-boron, and ferro-vanadium nitride master alloys. During furnace smelting, iron boron and electrolytic copper are added after complete melting, and silicon is added last. The smelting temperature is about 1520°C. After smelting evenly for 120 minutes, it is poured into a cooling casting pan to form a master alloy steel ingot;

[0057] Put the smelted master alloy steel ingot into the medium-frequency induction melting furnace for secondary uniform melting at a temperature of about 1300°C. After smelting for 60 minutes, pour the molten steel into the intermediate pressure nozzle bag that is preheated and kept at 1250°C. After the temperature of the liquid steel in the intermediate pressure nozzle bag is stabilized, the liquid steel flows from the nozzle at the bottom to the high-speed rotating copper r...

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Abstract

The invention provides a low-loss nanocrystalline alloy soft magnetic material and a preparation method thereof. The alloy formula design is optimized, and V, N and a small quantity of rare earth element M are added on the basis of a national standard alloy component 1K107. A FeCuNbVSiBNM iron-based nanocrystalline alloy strip is prepared through proportioning, mother alloy preparation through steelmaking and secondary remelting by means of a single-roller melt quenching method. The low-loss nanocrystalline alloy soft magnetic material has the characteristics of high resistivity, low loss, high Bs value, high permeability, good flatness and the like.

Description

Technical field: [0001] The invention relates to an iron-based nanocrystalline alloy soft magnetic material used in a wireless charging system and a preparation method thereof, in particular to a low-loss nanocrystalline alloy soft magnetic material and a preparation method thereof. Background technique: [0002] Magnetic isolation material is one of the important materials used to make magnetic isolation and magnetic accumulation components of wireless charging system. It is mainly to enhance the induction magnetic field and the shielding coil magnetic field, prevent the magnetic force line from passing through the metal device to generate eddy current loss and heat, and prevent the magnetic force line from passing through the circuit to interfere with the normal operation of the circuit. The quality of its performance plays a vital role in the structure, function design and charging efficiency of the wireless charging system. At present, in the wireless charging system, f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/16C22C38/12C22C33/06H01F1/147
CPCC22C33/06C22C38/001C22C38/005C22C38/02C22C38/12C22C38/16C22C2200/04H01F1/14775
Inventor 周国华毛宇晨黄丛伟胡曹生
Owner DAYOU SCIENTFIC & TECHNICAL CO LTD
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