Iron-based magnetically soft alloy, method for manufacturing same, and magnetic component comprising same

A technology of soft magnetic alloy and manufacturing method, applied in the direction of inductance/transformer/magnet manufacturing, magnetic objects, magnetic materials, etc. Low magnetic loss characteristics, low coercive force, and easy design of process conditions

Pending Publication Date: 2022-03-04
AMOGREENTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently known iron-based soft magnetic materials are difficult to simultaneously satisfy the characteristics of high saturation magnetic flux density, low coercive force, low magnetic loss and high permeability.
In addition, it is applied to parts for various purposes, but when it is applied, when the structure is changed due to the shape and size of the magnetic body or the original physical properties of the magnetic material, for example, thinning processing for compensating for magnetic loss, etc., may cause Large changes in other physical properties make it difficult for magnetic materials of a specific composition to be widely used in magnetic components realized by various uses, various shapes, and sizes

Method used

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  • Iron-based magnetically soft alloy, method for manufacturing same, and magnetic component comprising same
  • Iron-based magnetically soft alloy, method for manufacturing same, and magnetic component comprising same
  • Iron-based magnetically soft alloy, method for manufacturing same, and magnetic component comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] Weigh the raw materials of Fe, B, C, Nb and Cu to produce Fe by the experimental formula 80.3B 16.8 C 1.0 Cu 0.9 Nb 1.0 The Fe master alloy indicated, and the Fe master alloy was fabricated by the arc melting method. After that, after melting the produced Fe master alloy, in an Ar atmosphere, it was melt-spun at a rate of 60 m / s for 10 6 Rapid cooling at a rate of K / sec produced a ribbon-shaped iron-based soft magnetic initial alloy with a thickness of about 20 μm and a width of about 20 mm.

[0103] Then, the produced ribbon-shaped iron-based soft magnetic initial alloy was wound so that the outer diameter was 20 mm and the inner diameter was 10 mm, and the core-shaped initial alloy or ribbon was heated at a heating rate of 80°C / min under normal temperature conditions. The shaped initial alloy was heat-treated and kept at a temperature of 470° C. for 10 minutes, thereby producing an iron-based soft magnetic alloy as shown in Table 1 below.

Embodiment 2～ Embodiment 16

[0105] Production was carried out in the same manner as in Example 1, and the composition and / or the heat treatment temperature were changed as shown in Table 2 or Table 3 below, thereby producing the iron-based soft magnetic alloy shown in Table 2 or Table 3 below.

experiment example 1

[0109] The following physical properties were evaluated for the initial alloys produced in Examples 1 to 16 and Comparative Examples 1 to 5 and the alloys after heat treatment, respectively, and are shown in Tables 1 to 3.

[0110] 1. Crystal structure analysis

[0111] In order to confirm the crystal phase of the produced initial alloy and the alloy after the heat treatment, and the average particle size of the generated crystal, the X-ray diffraction pattern and the transmission electron microscope were analyzed. In this case, in figure 2 The X-ray diffraction patterns of the iron-based soft magnetic alloys before the heat treatment of Examples 1 and 2 are shown in the analysis results. and, in image 3 and Figure 4 The X-ray diffraction pattern and transmission electron microscope image of Example 1 after heat treatment are shown, respectively. Figure 5 and Image 6 The X-ray diffraction pattern and the transmission electron microscope image of Example 2 after the h...

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Abstract

The invention provides an iron-based magnetically soft alloy. The iron-based soft magnetic alloy disclosed by one embodiment of the invention is represented by an experimental formula FeaBbCcCudNNb, in the experimental formula, a, b, c, d and e are atomic percents (at%, atomic percent) of corresponding elements, a is greater than or equal to 78.0 and less than or equal to 84.5, and b + c + d + e is greater than or equal to 15.5 and less than or equal to 22.0. Accordingly, the iron-based magnetically soft alloy has high saturation magnetic flux density and high magnetic permeability characteristics, can be used as a small and lightweight component, has low coercive force and low magnetic loss characteristics, and thus can be easily used as a high-performance / high-efficiency component. Moreover, when uniform and small-particle-size crystal grains are obtained after heat treatment, the influence of heat treatment conditions can be minimized, and process conditions can be easily designed, so that the crystal grains are very suitable for mass production. Therefore, the magnetic material can be widely used as a magnetic component of electric and electronic equipment such as a high-power laser, a high-frequency power supply, a high-speed pulse generator, a switched mode power supply (SMPS), a high-frequency filter, a low-loss high-frequency transformer, a high-speed switch, wireless power transmission, electromagnetic wave shielding and the like.

Description

technical field [0001] The present invention relates to iron-based soft magnetic alloys, methods for their manufacture, and magnetic components therethrough. Background technique [0002] Soft magnetic materials are core materials for various transformers, choke coils, various sensors, saturable reactors, magnetic switches, etc., and are widely used in power distribution transformers, laser power supplies, accelerators, etc. for power supply or conversion, etc. of various electrical and electronic equipment. In the electrical and electronic fields as described above, the market demand for soft magnetic materials lies in small size, light weight, high performance / high efficiency, and low product cost. Soft magnetic material with density and low magnetic loss. [0003] In addition, in recent years, in addition to saturation magnetic flux density and magnetic loss, there has been an increasing demand for soft magnetic materials having excellent magnetic permeability. However...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/14H01F41/02H01F27/24
CPCH01F1/14H01F41/02H01F27/24C22C38/16H01F1/15308H01F1/15333H05K9/0075H01F41/0253H01F1/14708H01F1/20C22C2202/02H01F1/16H01F17/04
Inventor 尹世重黄淳模宋容卨
Owner AMOGREENTECH CO LTD
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