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Iron-based nanocrystalline magnetically soft alloy material and preparation method thereof

A technology of iron-based nanocrystals and soft magnetic alloys, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of low loss, high cost, and low saturation magnetic induction intensity, and achieve low loss, low cost, and high saturation The effect of magnetic induction

Inactive Publication Date: 2012-10-10
苏州宝越新材料科技有限公司
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Problems solved by technology

Among them, although NANOPERM alloy has a high saturation magnetic induction intensity, its comprehensive soft magnetic performance is inferior to that of FINEMET alloy. At the same time, because it contains a large amount of easily oxidized and expensive metal elements Zr, Hf, Nb, etc., it is expensive and has a complicated preparation process. The popularization and application of the HITPERM alloy system invented on the basis of the NANOPERM alloy system, although its Curie temperature and saturation magnetic induction intensity are higher than the NANOPERM alloy, and the high-frequency characteristics are also better than the NANOPERM alloy, but due to the addition of expensive metal elements Co As a result, the comprehensive performance of the soft magnetic field has declined and the cost has increased, so it has not been popularized and applied so far.
[0005]In comparison, FINEMET alloy has the best overall performance and has been widely used, but this alloy system has obvious disadvantages: its high-frequency loss is relatively Larger, relatively low saturation magnetic induction, the highest saturation magnetic induction is only 1.4T, and Fe73.5Cu1Nb3 with better comprehensive performance The saturation magnetic induction of sub>Si13.5B9 alloy under the optimal annealing condition is only 1.24T
[0016]The above-mentioned patents have improved the soft magnetic properties of nanocrystalline alloys to varying degrees by adjusting the composition and preparation process of the alloys, but there are still obvious Defect: The saturation magnetic induction is still not very high, especially the high saturation magnetic induction and low loss cannot be achieved at the same time

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  • Iron-based nanocrystalline magnetically soft alloy material and preparation method thereof
  • Iron-based nanocrystalline magnetically soft alloy material and preparation method thereof
  • Iron-based nanocrystalline magnetically soft alloy material and preparation method thereof

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preparation example Construction

[0052] Simultaneously, the present invention also provides a kind of preparation method of iron-based nanocrystalline soft magnetic alloy, comprising the following steps:

[0053] (1) According to the formula (Fe a Si b B c P d Cu e ) fMgThe atomic content in the preparation alloy raw materials, a, b, c, d, e are the corresponding content of each atom, f, g are the corresponding composition or percentage content of atoms, where 0.75≤a≤0.87, 0

[0054] (2) Put the above-mentioned alloy raw materials in a smelting device for smelting to obtain alloy ingots;

[0055] (3) breaking the alloy ingot obtained in step (2);

[0056] (4) The broken alloy ingot is melted, and the alloy liquid is sprayed onto the rotating copper roller by a single-roll quenching method to prepare an amorphous alloy;

[0057] (5) Carry out cryst...

Embodiment 1

[0068] The preparation composition is (Fe 0.8265 Si 0.02 B 0.09 P 0.05 Cu 0.0135 ) 99 al 1 The nanocrystalline soft magnetic alloy, the steps are as follows:

[0069] (1) Using pure Fe, pure Si, pure B, pure Cu, pure Al and Fe-P alloys with a purity greater than 99.5% as raw materials, according to (Fe 0.8265 Si 0.02 B 0.09 P 0.05 Cu 0.0135 ) 99 al 1 Weigh the raw materials according to the ratio and set aside;

[0070] (2) Place the raw materials weighed in step (1) in a high-frequency induction melting furnace for melting, first vacuumize to 4×10 -3 Pa, then filled with argon gas to a pressure of 0.09 MPa for melting, fully smelted after melting, and then kept for 10 minutes, and then poured into the casting mold - copper mold to obtain alloy ingots;

[0071] (3) Remove the surface impurities of the alloy ingot obtained in step (2), then perform ultrasonic cleaning in alcohol, then break the alloy ingot into small alloy ingots, and perform ultrasonic cleaning ...

Embodiment 2

[0082] The preparation composition is (Fe 0.8265 Si 0.02 B 0.09 P 0.05 Cu 0.0135 ) 99 Mo 1 The nanocrystalline soft magnetic alloy, the steps are as follows:

[0083] (1) Using pure Fe, pure Si, pure B, pure Cu, pure Mo and Fe-P alloy with a purity greater than 99.5% as raw materials, according to the molecular formula (Fe 0.8265 Si 0.02 B 0.09 P 0.05 Cu 0.0135 ) 99 Mo 1 Weigh the raw materials according to the ratio and set aside;

[0084] (2) Place the raw materials weighed in step (1) in a high-frequency induction melting furnace for melting, first vacuumize to 4×10 -3 Pa, and then filled with argon until the pressure is 0.09 MPa for smelting, fully smelted after melting, kept for 10 minutes, and then poured into the casting mold - copper mold to obtain alloy ingots;

[0085] (3) Remove the surface impurities of the alloy ingot obtained in step (2), then perform ultrasonic cleaning in alcohol, then break the alloy ingot into small alloy ingots, and perform ul...

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Abstract

The invention discloses an iron-based nanocrystalline magnetically soft alloy which is characterized in that the alloy is represented by (FeaSibBcPdCue)fMg, wherein a, b, c, d and e are the contents of corresponding atoms, and f and g are the percentage of corresponding components or atoms; 0.75<=a<=0.87, 0 <b<=0.08, 0<c<=0.14, 0<d<=0.08, 0<e<=0.02, 97<=f<100, 0<g<=3, and meets a + b + c + d + e = 1, f + g = 100, and M is selected from one of Cr, Mn, Al, Mo, Zr, Hf, Ta, W, V and Nb. Meanwhile, the invention also provides the preparation method of the iron-based nanocrystalline magnetically soft alloy. The iron-based nanocrystalline magnetically soft alloy has the beneficial effects that the iron-based nanocrystalline magnetically soft alloy material provided by the invention has high saturated magnetic induction intensity and low loss, does not contain expensive metal, and is low in cost.

Description

technical field [0001] The invention relates to a soft magnetic alloy material and a preparation method thereof, in particular to an iron-based nanocrystalline soft magnetic alloy material and a preparation method thereof. The material has the properties of high saturation magnetic induction and low loss. Background technique [0002] Since the appearance of soft magnetic alloy materials, they have received extensive attention and in-depth development because of their excellent soft magnetic properties such as high saturation magnetic induction, high magnetic permeability, low loss, and low coercive force. Moreover, with the development of science and technology, electronic equipment tends to be miniaturized, so the development of soft magnetic alloy materials with high saturation magnetic induction and low loss is currently one of the hottest research directions in the field of soft magnetic. [0003] Iron-based (Fe-based) nanocrystalline soft magnetic alloys are composed o...

Claims

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Application Information

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IPC IPC(8): C22C38/16C22C45/02C22C1/00H01F1/153
Inventor 沈宝龙
Owner 苏州宝越新材料科技有限公司
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