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Iron-based amorphous magnetically soft alloy with uniform element distribution and preparation method thereof

An iron-based amorphous alloy and iron-based amorphous technology, which can be used in magnetic materials, magnetic objects, electrical components, etc., and can solve the problems of uneven distribution, high alloy cost, and low saturation magnetization.

Active Publication Date: 2014-10-01
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In summary, the soft magnetic properties of amorphous soft magnetic alloys have been improved to varying degrees by adjusting the alloy composition and preparation process, but there are still obvious defects in general: the saturation magnetization is still not very high, especially It is impossible to achieve high saturation magnetization and low coercive force at the same time; the composition of the alloy contains one or more of noble metal elements such as Nb, Zr, Co, Ni, Hf, etc., resulting in higher cost of the alloy; the alloy production process requires more High, complicated process leads to strict requirements on production equipment, and finally increases the production cost of the alloy; the element segregation phenomenon of the amorphous strip containing P element is serious, and the P element is unevenly distributed in the strip due to burning edge; the amorphous alloy Low thermal stability, resulting in a narrow application temperature range

Method used

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  • Iron-based amorphous magnetically soft alloy with uniform element distribution and preparation method thereof
  • Iron-based amorphous magnetically soft alloy with uniform element distribution and preparation method thereof
  • Iron-based amorphous magnetically soft alloy with uniform element distribution and preparation method thereof

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preparation example Construction

[0047] The key three steps of the single roll melt rapid quenching method described in the preparation method of the present invention are: A melting alloy step, by figure 1 The crucible shown in is used to complete the melting of the alloy; B throws out the step, under high vacuum and argon protection atmosphere, the molten alloy solution in the crucible is thrown out by the nozzle, which is formed by figure 1 Middle nozzle and crucible system to complete; C cooling step, used to cool the alloy solution coming out of the nozzle, thereby forming an amorphous strip, which is composed of figure 1 Middle quenching roller to complete.

[0048] figure 1 It is a commonly used equipment for the single-roll melt quenching method of the present invention, which includes a crucible 3; an induction heating coil 4 arranged outside the crucible; a nozzle 8 arranged at the bottom of the crucible 3 for ejecting molten alloy 5 melted in the crucible; The quenching roller 6 arranged under th...

Embodiment 1

[0050] In the iron-based amorphous alloy Fe of the present invention a Si b B c P d m e A group of different alloy samples were prepared in the range of composition, and the composition of the samples was as shown in table 1, wherein the alloys with serial numbers of 1-9 and 22-25 were embodiments of the present invention (preparing the amorphous strip step by the single-roll quenching method) The conditions of filling argon after vacuumizing are used for preparation), and the alloy with serial number 10-21 is a comparative example of the present invention (it does not contain M element in its alloy composition, and the specific operation of the step of preparing amorphous strip by single-roller quenching method See Table 1 for the conditions, the alloy with serial number 26 adopts the alloy composition of the present invention but adopts atmospheric atmosphere to prepare in the step of preparing the amorphous strip by the single-roll quenching method, and the performance t...

Embodiment 2

[0063] In the iron-based amorphous alloy Fe of the present invention a Si b B c P d m e A group of different alloy samples were prepared, and the composition of the samples is shown in Table 2. The alloys with the sample numbers 27-45 and 49-58 were vacuum-filled and then filled in the single-roll quenching method to prepare amorphous strips. Argon gas conditions were used for preparation, while the alloys numbered 46-48 and 59-64 were prepared in atmospheric environment in the step of preparing amorphous strips by single-roll quenching method. The preparation method is the same as in Example 1, and the properties of samples 27-64 are tested by the same test method as in Example 1, and the measured results are shown in Table 2.

[0064] As can be seen from the sample analysis results of this embodiment: 1) the alloy strip structure of all samples of this embodiment is a completely amorphous structure; 2) all samples of this embodiment have excellent soft magnetic propertie...

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Abstract

The invention discloses an iron-based amorphous magnetically soft alloy with uniform element distribution and a preparation method thereof. The expression of the alloy is FeaSibBcPdMe, a, b, c, d and e in the expression represent the atomic percent contents of corresponding components respectively, and meet the following conditions: a is not less than 70 and not greater than 84, b is not less than 2 and not greater than 10, c is not less than 5 and not greater than 18, d is not less than 0.001 and not greater than 8, e is not less than 0.0001 and not greater than 2.5, a+b+c+d+e=100%, and M is one or more of C, N, Sn, Ge, Ga, Al, S, Te, Be, Pb, Mg and Cu. The amorphous strip prepared from the alloy under a high vacuum and argon shield has the characteristic of uniform element distribution, particularly solves the problem of non-uniform distribution of element P in the amorphous alloy, has excellent magnetically soft performance, and is suitable for transformers, engines, power generators, magnetic sensors and the like.

Description

technical field [0001] The invention relates to the field of amorphous soft magnetic materials, in particular to an iron-based amorphous soft magnetic alloy with uniform element distribution and a preparation method thereof, which also has high thermal stability and high saturation magnetic induction, and is suitable for transformers, engines, power generation machines and magnetic sensors, etc. Background technique [0002] Soft magnetic alloy material is a kind of magnetic functional material developed earlier by human beings. It has excellent soft magnetic properties such as high saturation magnetic induction, high magnetic permeability, low loss, and low coercive force. Since its initial appearance and development, it has experienced electrical pure iron, electrical steel, permalloy, Fe-Co alloy, soft ferrite, and Fe-based amorphous and nanocrystalline alloys. In practical applications, the traditional electrical steel has a large loss, and the saturation magnetization ...

Claims

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Application Information

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IPC IPC(8): C22C45/02H01F1/147
Inventor 周少雄向睿董帮少张广强李宗臻
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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