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Iron-based amorphous nanocrystalline alloy and preparation method thereof

A nanocrystalline alloy, iron-based amorphous technology, applied in the field of magnetic materials, can solve problems such as cracking lines, slag lines, scratches, inclusions, etc., to achieve the effect of ensuring continuity

Active Publication Date: 2022-03-29
QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the strip prepared by the above-mentioned patent shows many defects on the surface, such as crack lines, slag lines, scratches, inclusions, etc. (such as figure 1 , 2 shown)

Method used

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  • Iron-based amorphous nanocrystalline alloy and preparation method thereof
  • Iron-based amorphous nanocrystalline alloy and preparation method thereof
  • Iron-based amorphous nanocrystalline alloy and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment

[0051] 1) The relationship between the viscosity coefficient η and the content of the main element Si:

[0052] After each raw material is weighed according to the mass ratio, it is sequentially added to an intermediate frequency induction heating furnace for melting. During the melting process, argon gas is used as a protective gas. After melting, it is calmed for 30 minutes to ensure that the molten steel composition is uniform without segregation; For the viscosity value of molten steel, the measuring temperature is 1450°C.

[0053] In order to determine the content of η and elements, the elements strongly related to the slag state are selected for analysis, that is, the main elements are Si, B, P, and C. The relationship between the relevant parameters of casting strips is used to determine the element content and viscosity coefficient η under the performance advantages of the strip. The specific implementation element ratio is shown in Table 2 below:

[0054] Table 2 Rel...

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Abstract

The invention provides an iron-based amorphous nanocrystalline alloy as shown in a formula Fe (100-a-b-c-d-e) BaSibPcCdCue, wherein d + (b / c) is equal to 0.85 to 1.3, and the viscosity coefficient eta is (3.0 to 8.0) * 10 <-3 > Pa / s; the invention further provides a preparation method of the iron-based amorphous nanocrystalline alloy. According to the invention, the dynamic viscosity coefficient eta is regulated and controlled through the change of the contents of the alloy elements, so that the control range of the viscosity of the molten steel is ensured, the molten steel has higher purity, and the continuity of casting and the surface quality of a strip are ensured.

Description

technical field [0001] The invention relates to the technical field of magnetic materials, in particular to an iron-based amorphous nanocrystalline alloy and a preparation method thereof. Background technique [0002] Soft magnetic materials currently used as magnetic cores of transformers, motors or generators, current sensors, magnetic sensors and pulse power magnetic components, including silicon steel, ferrite, amorphous alloys and nanocrystalline alloys; The density is high, and the machinability is strong, but the loss becomes larger at high frequencies, and it is difficult to make the silicon steel sheet thinner in the thickness direction. The saturation flux density of ferrite is low, and its use is limited under the conditions of high power and high saturation magnetic induction. Co-based amorphous alloys are not only expensive, but also have a low saturation magnetic flux density. Therefore, when high-power devices are used, the components will be enlarged, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/02C22C33/00C22C33/04C22C38/02C22C38/16B22D11/06
CPCC22C45/02C22C38/16C22C38/02C22C33/04C22C33/003B22D11/0611
Inventor 步建伟庞靖杨东林福强姚文康刘红玉
Owner QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
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