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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 fields of components and components, strips, strips, and powders, and can solve the problems of low content of iron-based elements, insufficient ability to form amorphous components, and weakened soft magnetic properties, etc. question

Active Publication Date: 2009-11-04
TOKIN CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

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example

[0082] The present invention will be described in detail below with examples.

[0083] (Examples 1 to 15)

[0084] 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 high It is melted by frequent heating to obtain a master alloy. Thereafter, using the prepared master alloys, strips having thicknesses of 20 μm and 200 μm, respectively, were produced using a single roll method by adjusting the rotational speed.

[0085] For comparison, a master alloy having the same composition as commercial METGLAS 2605-S2 was prepared by high-frequency heating, and then 20 μm and 200 μm strips were formed by a single-roll method.

[0086]For each strip of 200 μm, use the X-ray diffraction method to measure the slowest cooling free solidification surface that is not in contact with the copper roll, thereby obtaining the X-ray diffraction test pattern, when the obtained X-ray diffraction test pattern ...

example 133

[0150] 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 alloy powder obtained was then classified into a particle size of 45 μm or less, which was then subjected to XRD measurements, after which a broad peak dedicated to the amorphous phase was identified. In addition, thermal analysis was performed by DSC to measure glass transition temperature (Tg) and crystallization temperature (Tx), whereby ΔTx (Tg-Tx) was determined to be 36°C. Then, the powder was kept at a temperature of 400° C. lower than the glass transition temperature to undergo heat treatment in the atmosphere for 0.5 hours, thereby forming oxides on the surface of the powder.

[0151] In addition, a silicone resin as a binder was added to the oxide-formed powder in an amount of 5%, 2.5%, 1% and 0.5%, respectively, to obtain respective powders. Using pressed parts with grooves with an outer diameter of 27 mm and an inner diameter of 14 mm, at room temperature, at...

example 134

[0156] In Example 134, an inductance component corresponding to the 10th sample in Example 133 was produced using the same alloy powder and the same manufacturing process and heat treatment at 450°C for 0.5 hours in a nitrogen atmosphere. High-frequency magnetic cores are used to manufacture inductive components. In addition, for comparison, an inductance part was fabricated using sendust powder as a magnetic core material, 6.5% silicon steel, and an Fe-based amorphous material. Each inductive component is as figure 2 shown, but can also be Figure 4 Inductive component shown with a notch in part of the magnetic path. For each of these inductive components, the magnetic flux density (at 1.6×10 4 A / m), DC resistivity (Ω·cm), permeability for inductance normalization, and core loss (20kHz 0.1T) are measured. The results are shown in Table 15.

[0157] It can be understood from Table 15 that the magnetic flux density of the inductance part of the present invention is substa...

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Abstract

An amorphous soft magnetic alloy belt material prepared by the amorphous soft magnetic alloy is disclosed. The amorphous soft magnetic alloy has a composition expressed by a formula of (Fe[1-alpha]TM[alpha])[100-w-x-y-z]PwBxLySiz, 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<y<=10 at %, and 0<=z<=8 at %). The depth of the amorphous soft magnetic alloy is 1 to 200[mu]m.

Description

[0001] This application is a divisional application of a patent application (application date February 2, 2007, application number 200710006386.7, title of the invention is "amorphous soft magnetic alloy and an inductance component using this alloy"). technical field [0002] The present invention relates to an amorphous soft magnetic alloy, and also relates to strips, strips, powders, elements and components using this alloy. Background technique [0003] Amorphous magnetic alloys started with Fe-P-C, and then 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 their low loss, but have not been widely used because of their high cost and their low Bs compared to conventional materials such as silicon steel sheets. In addition, since these amorphous alloys require a cooling rate of 10 5 K / sec or higher, so only strips with a thickness of only about 200 μm (t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/153H01F27/25H01F41/02C22C45/00
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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