Amorphous soft magnetic alloy and inductance component using the same

A technology of soft magnetic alloy and soft magnetic alloy strip, which is applied in the field of strip, components and components, powder, and strip, and can solve the problems of insufficient amorphous formation ability of components, elevated heat treatment temperature, and difficult magnetic properties, etc.

Inactive Publication Date: 2007-09-12
TOKIN CORP +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, since the amorphous-forming ability is not sufficient according to any of the ingredients, it is difficult to produce a powder by the water atomization method or the like
In addition, if an inexpensive iron-nickel alloy material or the like containing impurities is used, it is expected to lower the amorphous formation ability, thereby reducing the uniformity of the amorphous, thus resulting in weakening of the soft magnetic properties
Also as far as Fe-based metallic glasses are concerned, although their respective amorphous-forming abilities are very strong, because they contain a large amount of non-metallic components and the content of iron-based elements is very low, it is difficult to satisfy their magnetic properties at the same time. requirements
In addition, due to the high glass transition temperature, there will also be problems such as an increase in heat treatment temperature.

Method used

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  • Amorphous soft magnetic alloy and inductance component using the same
  • Amorphous soft magnetic alloy and inductance component using the same
  • Amorphous soft magnetic alloy and inductance component using the same

Examples

Experimental program
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example

[0089] Hereinafter, the present invention will be described in detail with examples.

[0090] (Examples 1 to 15)

[0091] Weigh the pure metal materials Fe, P, B, Al, V, Cr, Y, Zr, Nb, Mo, Ta, and W according to the predetermined alloy composition, and then carry out the high pressure in the evacuated Ar atmosphere decompression chamber. Frequency heating to melt it, thereby making a master alloy. After that, using the master alloy produced, a single-roll method was used to produce strips with thicknesses of 20 μm and 200 μm by adjusting the rotation speed.

[0092] For comparison, a master alloy with the same composition as the commercial METGLAS 2605-S2 was prepared by high-frequency heating, and then a single-roll method was used to form 20 μm and 200 μm strips.

[0093]For each 200μm strip, the X-ray diffraction method is used to measure the free solidification surface with the slowest cooling rate that is not in contact with the copper roll, and the X-ray diffraction test cha...

example 133

[0157] In Example 133, the composition is Fe 77 P 10 B 10 Nb 2 Cr 1 Ti 0.1 C 0.1 Mn 0.1 Cu 0.1 The resulting alloy powder is then classified into a particle size of 45μm or less, and then subjected to XRD measurement, and then the broad peak specific to the amorphous phase is determined. In addition, thermal analysis was performed by DSC to measure glass transition temperature (Tg) and crystallization temperature (Tx), thereby determining that ΔTx (Tg-Tx) was 36°C. Then, the powder was maintained at a temperature of 400° C. lower than the glass transition temperature to perform a heat treatment in the atmosphere for 0.5 hours, thereby forming oxides on the surface of the powder.

[0158] In addition, silicone resin as a binder was added to the oxide-formed powder in amounts of 5%, 2.5%, 1%, and 0.5%, respectively, to obtain respective powders. Use pressed parts with grooves with an outer diameter of 27mm and an inner diameter of 14mm, at room temperature, at 150°C higher than the ...

example 134

[0163] In Example 134, an inductance component corresponding to the 10th sample in Example 133 was prepared, using the same alloy powder and the same manufacturing process and heat treatment at 450° C. in a nitrogen atmosphere for 0.5 hours. High-frequency magnetic cores are used to manufacture inductive components. In addition, for comparison, an inductance component was made using aluminum silicon iron powder, 6.5% silicon steel, and Fe-based amorphous material as the magnetic core material. Each inductance component is shown in FIG. 2, but it can also be an inductance component with a gap in a part of the magnetic circuit as shown in FIG. 4. For each of these inductive components, the magnetic flux density (at 1.6×10 4 A / m), DC resistivity (Ω·cm), permeability for inductance standardization, and core loss (20kHz 0.1T) are measured. The results are shown in Table 15.

[0164] It can be understood from Table 15 that the magnetic flux density of the inductor component of the prese...

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Abstract

To provide an amorphous soft magnetic alloy having a supercooled liquid region and excellent in amorphous-forming ability and soft magnetic properties, by selecting and optimizing an alloy composition, and to further provide a ribbon, a powder, a high-frequency magnetic core, and a bulk member each using such an amorphous soft magnetic alloy. The amorphous soft magnetic alloy has a composition expressed by a formula of (Fe1-alphaTMalpha)100-w-x-y-zPwBxLySiz, wherein unavoidable impurities are contained, TM is at least one selected from Co and Ni, L is at least one selected from the group consisting of Al, V, Cr, Y, Zr, Mo, Nb, Ta, and W, 0<=alpha0.98, 2<=w<=16 at %, 2<=x<=16 at %, 0 H01F 1 / 153 C22C 45 / 00 3 54 10 2007 / 2 / 2 101034609 2007 / 9 / 12 000000000 NEC Tokin Corp. Japan Urata Akiri Fujiwara Teruhiko Matsumoto Hiroyuki Yamada Yasunobu Inoue Akihisa zhangcheng xin 11021 The Patent Agency of the Chinese Academy of Sciences Inside the Chinese Academy of Sciences, No.52 Sanlihe Road, Fuwai, Beijing 100864 Japan 2006 / 2 / 2 2006-026210 Japan 2006 / 12 / 1 2006-326179

Description

Technical field [0001] The invention relates to an amorphous soft magnetic alloy, and also relates to strips, strips, powders, components and parts using this alloy. Background technique [0002] Amorphous magnetic alloys started with Fe-P-C, and later developed low-loss materials Fe-Si-B, high saturation magnetic flux density (Bs) materials Fe-B-C, etc. These materials have been expected as transformer materials due to low loss, but because of their high cost and low Bs compared to conventional materials such as silicon steel sheets, they have not been widely used. In addition, because these amorphous alloys require a cooling rate of 10 5 K / sec or higher, so only strips with a thickness of only about 200μm (the highest level in the laboratory) can be produced. Therefore, the tape must be wound into the magnetic core or laminated into the magnetic core, which greatly limits the application of amorphous alloys. [0003] Since the second half of the 1980s, the development of so-cal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/153C22C45/00
Inventor 浦田显理藤原照彦松元裕之山田健伸井上明久
Owner TOKIN CORP
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