Low-power Si-Al alloy material with magnetic permeability μ=26 and its preparation method

A technology of sendust and magnetic permeability, which is applied in the direction of magnetic materials, inductance/transformer/magnet manufacturing, magnetic objects, etc., can solve the problems of no large-scale manufacturers and low production volume, and improve the DC bias configuration capacity, ease of use of equipment, and improved utilization

Active Publication Date: 2015-09-16
德清鑫晨新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its powder-making process, its production volume is small, and no large-scale manufacturers have been found. In view of the rapid development of magnetic materials, the product loss is low, the process is simple, and the powder-making process that can be mass-produced is an urgent need.

Method used

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  • Low-power Si-Al alloy material with magnetic permeability μ=26 and its preparation method
  • Low-power Si-Al alloy material with magnetic permeability μ=26 and its preparation method
  • Low-power Si-Al alloy material with magnetic permeability μ=26 and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Get 1000g sendust powder, wherein the weight content of Si is 9%, the weight content of Al is 6%, the Ni of 1% by weight and the Cr of 1% by weight, and the balance is Fe, the prepared sendust When the powder is roasted until the temperature reaches 100°C, add 2.5% phosphoric acid diluent for surface treatment, and then continue roasting until dry; then press the iron-silicon-aluminum alloy soft magnetic powder: the pressure is 20 tons / cm 2 ; and through heat treatment, hydrogen or nitrogen gas is passed into the heat treatment furnace, the temperature is controlled at 750±3°C, and the heat treatment time is 150 minutes; finally, epoxy resin paint is used to coat the surface of the powder core. Obtained 2 sendust products with specifications of Φ26.9 / Φ14.7×11.2 (that is, the outer diameter is 26.9mm, the inner diameter is 14.7mm, and the height is 11.2mm).

[0025] (1) f﹑L﹑Q test

[0026] The copper wire adopts Φ0.5mm, and the number of turns of the coil is 26 turns, a...

Embodiment 2

[0042] Get 1000g sendust powder, wherein the weight content of Si is 9.5%, the weight content of Al is 5.6%, the Ni of 0.8% by weight and the Cr of 0.5% by weight, the balance is Fe, according to the process step of embodiment 1 The sendust powder is pressed into two sendust products with specifications of Φ26.9 / Φ14.7×11.2 (that is, the outer diameter is 26.9mm, the inner diameter is 14.7mm, and the height is 11.2mm). Other conditions remain unchanged.

[0043] (1) f﹑L﹑Q test

[0044] The copper wire adopts Φ0.5mm, and the number of turns of the coil is 26 turns, and its magnetic performance parameters are shown in Table 5.

[0045] table 5

[0046]

[0047] (2) Power loss test

[0048] The copper wire is Φ0.5mm, and the number of turns of the coil is 26 turns, and its magnetic performance parameters are shown in Table 6.

[0049] Table 6

[0050] product Frequency f(kHz) Magnetic flux density B pk (Gauss) Power loss Product 1 50 100 4.76 ...

Embodiment 3

[0060]Get 1000g sendust powder, wherein the weight content of Si is 10%, the weight content of Al is 6%, the Ni of 0.5% by weight and the Cr of 0.5% by weight, the balance is Fe, according to the process step of embodiment 1 The sendust powder is pressed into two sendust products with specifications of Φ26.9 / Φ14.7×11.2 (that is, the outer diameter is 26.9mm, the inner diameter is 14.7mm, and the height is 11.2mm). Other conditions remain unchanged.

[0061] (1) f﹑L﹑Q test

[0062] The copper wire is Φ0.5mm, and the number of turns of the coil is 26 turns, and its magnetic performance parameters are shown in Table 9.

[0063] Table 9

[0064]

[0065] (2) Power loss test

[0066] The copper wire is Φ0.5mm, and the number of turns of the coil is 26 turns, and its magnetic performance parameters are shown in Table 10.

[0067] Table 10

[0068] product Frequency f(kHz) Magnetic flux density B pk (Gauss) Power loss Product 1 50 100 5.58 Produc...

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Abstract

The invention relates to a preparation method of a magnetic material, in particular to a low power consumption Fe-Si-Al alloy material with magnetic conductivity mu=26 and a preparation method thereof. The Fe-Si-Al alloy soft magnetic material is prepared from Fe-Si-Al alloy powder through surface treatment, compression molding and thermal treatment. The weight content of Si in the Fe-Si-Al alloy powder is 8.5-10%, the weight content of Al is 5-6%, the weight content of Ni is 0.5-1%, the weight content of Cr is 0.5-1%, and the balance weight is Fe. The invention has the following advantages: (1) the manufacturing process is simple, and used equipment is simple; (2) the product manufactured by using the method has improved saturation induction density while good inductance and high quality factor are maintained; (3) and the DC offset capability is increased, and the loss value is reduced.

Description

technical field [0001] The invention relates to a preparation method of a magnetic material, in particular to a low-power-consumption iron-silicon-aluminum alloy material with a magnetic permeability μ=26 and a preparation method thereof. Background technique [0002] At present, with the reform of energy technology, the rapid development of magnetic materials, from pure iron, silicon steel to permalloy products, to the development of amorphous and nanocrystalline materials in the past two decades has pushed the application of soft magnetic materials to a new level. In a wider range, among so many magnetic materials, sendust materials are widely used because of their high magnetic induction, low loss and high cost performance. However, due to the small production volume due to the powder-making process, there are basically no large-scale manufacturers. In view of the rapid development of magnetic materials, low product loss, simple process, and large-scale production of powd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/147H01F41/02C22C38/40C22C33/04B22F9/04
Inventor 柯昕
Owner 德清鑫晨新材料有限公司
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