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Powder pressing material and rotating electric machine

A technology of pressed powder and magnetic metal, applied in the direction of inorganic material magnetism, magnetic circuit characterized by magnetic material, electromechanical device, etc., can solve the problem of insufficient and incomplete high magnetic permeability, low loss, high saturation magnetization, high thermal stability High strength, high toughness, insufficient magnetic properties, etc.

Pending Publication Date: 2022-03-04
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, none of them fully meet the requirements of high magnetic permeability, low loss, high saturation magnetization, high thermal stability, high strength, and high toughness.
[0012] NiZn-based ferrite, hexagonal ferrite, etc. are listed as conventional soft magnetic materials at 100 kHz or higher (MHz band or higher), but the magnetic properties at high frequencies are not sufficient

Method used

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  • Powder pressing material and rotating electric machine
  • Powder pressing material and rotating electric machine
  • Powder pressing material and rotating electric machine

Examples

Experimental program
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Effect test

no. 1 Embodiment approach

[0052] The powder material according to the present embodiment is a powder material having a plurality of flat magnetic metal particles and inclusions, wherein the plurality of flat magnetic metal particles have an average thickness of 10 nm to 100 μm, with a flat plane and containing free Fe, CO. The magnetic metal phase of at least one first element in the group composed of Ni, the average value of the flat surface with respect to the thickness of the thickness is 5 to 10,000, and the inclusion phase is in the above-mentioned plurality of flat magnetic metal particles. There is a group of at least one second element selected from the group consisting of oxygen (O), carbon (C), nitrogen (N), and fluorine (f), in the above-described press material, and the flat surface relative to the above pressure. The planar orientation of the powder material is oriented in parallel, and has a dispersive force due to the inner direction in the plane, and the inclusion phase comprises an oxide a...

no. 2 Embodiment approach

[0140] The system and apparatus apparatus of the present embodiment has a powder material according to a first embodiment. Therefore, the content omitted to the first embodiment is omitted. The system, the component of the powder material contained in the device device, for example, various electric motors, generators, etc., such as electric motors, generators, etc.), transformers, sensors, converters, choke coils, filters, etc. , Magnetic wedge (magnetic wedge) for rotating electric machines, and the like. Figure 12 It is a conceptual diagram of the motor system of the second embodiment. The motor system is an example of a rotating motor system. The motor system is a system that includes a control system for controlling the speed, power (output power) of the motor. As a method of controlling the speed of the motor, there is a control method based on the control, proportional current control, voltage comparison control, frequency synchronization control, phase locked loop (PHASE L...

Embodiment 1

[0154] First, a single roll is used, and the belt of Fe-Co-Si-B (Fe70 Co30B25 (atom) - 4% by weight Si) is used. Next, the resulting belt is in h 2 Heat treatment at 300 ° C in the atmosphere. Next, the belt is pulverized to a predetermined size using a mixer device to obtain a flat magnetic metal particles. It should be noted that the crystallization temperature of the obtained flat magnetic metal particles is 555 ° C. Thereafter, by the resulting flat magnetic metal particles and oxide (Bi 2 O 3 -ZNO-B 2 O 3: Softening temperature 455 ° C is mixed together, heat treatment is carried out at the softening temperature and suppressed, so that the oxide is firmly attached to the flat magnetic metal particles. Thereafter, it is slightly pulverized, and mixed with the resin (polyimide resin: softening temperature 450 ° C), the magnetic field is molded (made the flat particles), and the heat pressing is performed by the hot pressing device. Thereafter, the powder material is obtained by...

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Abstract

A powder compact according to an embodiment of the present invention comprises: a plurality of flat magnetic metal particles having an average thickness of 10 nm to 100 [mu] m and having a flat surface and a magnetic metal phase containing at least one first element selected from the group consisting of Fe, Co and Ni; the average value of the ratio of the average length to the thickness in the flat plane is 5-10000, the inclusion phase is present between the plurality of flat magnetic metal particles and contains at least one second element selected from the group consisting of oxygen, carbon, nitrogen, and fluorine, the flat plane is oriented parallel to the plane of the powder material, and the inclusion phase contains at least one second element selected from the group consisting of oxygen, carbon, nitrogen, and fluorine. The flat magnetic metal particles have a coercivity difference due to direction in the plane, the inclusion phase contains an oxide and a resin, the softening temperature of the oxide is higher than the softening temperature of the resin, and the oxide is adhered to at least a portion of the flat magnetic metal particles.

Description

[0001] Reference application [0002] This application is based on Japanese Patent Application No. 2020-148734 (Application Serial: September 4, 2020), which is prioritized by the application. The present application includes all the contents of the application by referring to the application. Technical field [0003] Embodiments of the present invention relate to a powder material and a rotary electric machine comprising a plurality of flat magnetic metal particles. Background technique [0004] Currently, soft magnetic materials are applied to rotary motors (such as electric motors, generators, etc.), transformers, sensors, transducers, magnetic inks, antenna devices, and other systems, are very important materials. In these components, since the magnetic material having the soft magnetic material (relatively magnetic "μ 'is used, in the case of actual use, it is preferable to control μ'. Further, in order to achieve high efficiency systems, it is preferable to make materials as...

Claims

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Application Information

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IPC IPC(8): H01F1/12H01F1/22
CPCH01F1/12H01F1/22C22C38/02C22C38/10H02K1/02H02K2213/03B22F1/068B22F3/02C22C2202/02C22C33/0285B22F2998/10B22F1/05H01F1/26H01F1/24B22F9/04B22F1/12C22C1/05B22F1/16B22F1/10B22F2202/05B22F2301/35H01F1/03B22F2304/054C22C38/105Y10T428/32
Inventor 末纲伦浩木内宏彰真田直幸萩原将也
Owner KK TOSHIBA