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公开(公告)号：US20230075546A1
公开(公告)日：2023-03-09
申请号：US17789685
申请日：2021-01-20
Applicant: Sony Group Corporation , (NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY)
Inventor： Takeshi TAKAHASHI , Katsunori MAESHIMA , Minoru YAMAGA , Masaru TERAKAWA , Natsuki ICHISE , Tomoe SATO , Takashi KATAGUCHI , Atsuya TOWATA , Kimihiro OZAKI , Akihiro MATSUMOTO
Abstract: Provided is a magnetic recording medium that is able to achieve both an improvement in electromagnetic conversion characteristics and ensuring of high long-term reliability. The magnetic recording medium includes a magnetic layer and a base. The magnetic layer includes magnetic powders including ε-iron oxide. A ratio (Hrp/Hc) of residual coercivity (Hrp) measured in a perpendicular direction of the magnetic recording medium with use of a pulse magnetic field to perpendicular coercivity (Hc) of the magnetic recording medium is 2.0 or less. Saturation magnetization (Mst) per unit area of the magnetic recording medium is 4.5 mA or greater.
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公开(公告)号：US20220064510A1
公开(公告)日：2022-03-03
申请号：US17420737
申请日：2019-12-04
Inventor： Asaya FUJITA , Hiroyuki NAKAYAMA , Yoshiaki KINEMUCHI , Kimihiro OZAKI , Haruka ABE
Abstract: [PROBLEM TO BE SOLVED] To provide a solid heat storage material that is made of a VO2-based inorganic material, is easy to sinter, has a high latent heat storage capacity, and can be suitably used as a phase change solid heat storage material, and a method of manufacturing the same.
[SOLUTION] A powder material for sintering of a first aspect of the present invention includes vanadium and oxygen and includes a vanadium oxide represented by the chemical formula VO2 and at least one other type of vanadium oxide, in which, when the molar ratio of V and O in all the powder is expressed as 1:(2+d), d is in the range of 0-
公开(公告)号：US20240186037A1
公开(公告)日：2024-06-06
申请号：US18277339
申请日：2022-03-22
Inventor： Nobuyoshi IMAOKA , Kimihiro OZAKI , Tatsuya KON
IPC: H01F1/059
CPC classification number: H01F1/059
Abstract: The present invention addresses the problem of providing: a novel magnetic material for high frequency use, the magnetic material solving problems such as eddy current loss since the magnetic material has higher electrical resistivity than metal magnetic materials, while having higher magnetic permeability than ferrite magnetic materials; and a method for producing this magnetic material for high frequency use.
The present invention uses a rare earth-iron-M-nitrogen magnetic material (wherein M represents at least one element that is selected from among Ti, V, Mo, Nb, W, Si, Al, Mn and Cr) which is a nitride magnetic material that has a controlled crystal structure and a controlled composition.-
公开(公告)号：US20220291153A1
公开(公告)日：2022-09-15
申请号：US17638434
申请日：2020-08-11
Inventor： Rikio SODA , Kimihiro OZAKI
IPC: G01N23/2055
Abstract: An orientation degree distribution analysis method of the present invention includes steps of: inputting crystal structure information of an object to be measured, information on an intensity ratio of each diffraction peak and a crystal plane corresponding to each diffraction peak by X-ray diffraction measurement, information on a diffraction range and diffraction sensitivity, and an intensity ratio of each diffraction peak of a randomly oriented sample to a main storage device; calculating an angle formed by an orientation plane and a crystal plane corresponding to the diffraction peak of interest from the information stored in the main storage device in the step; calculating an existence ratio and storing the existence ratio in the main storage device; setting an orientation degree distribution function; and calculating an orientation degree distribution from the information of the input step and the calculation step. As a result, there are provided a method of easily calculating an orientation degree distribution from an X-ray diffraction profile by using an information processing apparatus and a calculation program without requiring complicated pretreatment of a sample as in an EBSD method, and a method of obtaining a spatial map of the orientation degree distribution from a plurality of diffraction intensity maps obtained by using a micro-focal X-ray.
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Patent Agency Ranking
公开(公告)号：US20180361474A9
公开(公告)日：2018-12-20
申请号：US15737429
申请日：2016-07-28
Applicant: JFE STEEL CORPORATION , JFE PRECISION CORPORATION , TOKIN CORPORATION , National Institute of Advanced Industrial Science and Technology
Inventor： Naomichi NAKAMURA , Makoto NAKASEKO , Takuya TAKASHITA , Mineo MURAKI , Hoshiaki TERAO , Raita WADA , Akiri URATA , Yu KANAMORI , Makoto YAMAKI , Koichi OKAMOTO , Toshinori TSUDA , Shoichi SATO , Kimihiro OZAKI
Abstract: Provided is a soft magnetic dust core having high density and favorable properties. A method of manufacturing a soft magnetic dust core includes: preparing coated powder including amorphous powder made of an Fe—B—Si—P—C—Cu-based alloy, an Fe—B—P—C—Cu-based alloy, an Fe—B—Si—P—Cu-based alloy, or an Fe—B—P—Cu-based alloy, with a first initial crystallization temperature Tx1 and a second initial crystallization temperature Tx2; and a coating formed on a surface of particles of the amorphous powder; applying a compacting pressure to the coated powder or a mixture of the coated powder and the amorphous powder at a temperature equal to or lower than Tx1−100 K; and heating to a maximum end-point temperature equal to or higher than Tx1−50 K and lower than Tx2 with the compacting pressure being applied.
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公开(公告)号：US20180169759A1
公开(公告)日：2018-06-21
申请号：US15737429
申请日：2016-07-28
Applicant: JFE STEEL CORPORATION , JFE PRECISION CORPORATION , TOKIN CORPORATION , National Institute of Advanced Industrial Science and Technology
Inventor： Naomichi NAKAMURA , Makoto NAKASEKO , Takuya TAKASHITA , Mineo MURAKI , Hoshiaki TERAO , Raita WADA , Akiri URATA , Yu KANAMORI , Makoto YAMAKI , Koichi OKAMOTO , Toshinori TSUDA , Shoichi SATO , Kimihiro OZAKI
CPC classification number: B22F3/14 , B22F1/00 , B22F1/02 , B22F3/00 , B22F3/02 , B22F3/03 , B22F2301/35 , B22F2304/10 , C22C33/02 , C22C38/00 , C22C38/002 , C22C38/02 , C22C38/16 , C22C45/02 , C22C2200/02 , C22C2200/04 , C22C2202/02 , H01F1/15308 , H01F1/15325 , H01F1/15333 , H01F1/15375 , H01F3/08 , H01F27/255 , H01F41/0246
Abstract: Provided is a soft magnetic dust core having high density and favorable properties. A method of manufacturing a soft magnetic dust core includes: preparing coated powder including amorphous powder made of an Fe—B—Si—P—C—Cu-based alloy, an Fe—B—P—C—Cu-based alloy, an Fe—B—Si—P—Cu-based alloy, or an Fe—B—P—Cu-based alloy, with a first initial crystallization temperature Tx1 and a second initial crystallization temperature Tx2; and a coating formed on a surface of particles of the amorphous powder; applying a compacting pressure to the coated powder or a mixture of the coated powder and the amorphous powder at a temperature equal to or lower than Tx1−100 K; and heating to a maximum end-point temperature equal to or higher than Tx1−50 K and lower than Tx2 with the compacting pressure being applied.
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公开(公告)号：US20210031268A1
公开(公告)日：2021-02-04
申请号：US17075693
申请日：2020-10-21
Applicant: JFE STEEL CORPORATION , JFE PRECISION CORPORATION , TOKIN CORPORATION , NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
Inventor： Naomichi NAKAMURA , Makoto NAKASEKO , Takuya TAKASHITA , Mineo MURAKI , Hoshiaki TERAO , Raita WADA , Akiri URATA , Yu KANAMORI , Makoto YAMAKI , Koichi OKAMOTO , Toshinori TSUDA , Shoichi SATO , Kimihiro OZAKI
IPC: B22F3/14 , B22F1/02 , C22C45/02 , H01F41/02 , C22C38/00 , B22F3/02 , B22F3/00 , B22F1/00 , H01F1/153 , C22C33/02 , H01F3/08 , B22F3/03 , C22C38/02 , C22C38/16
Abstract: Provided is a method of manufacturing a soft magnetic dust core. The method includes: preparing coated powder including amorphous powder made of an Fe-B-Si-P-C-Cu-based alloy, an Fe-B-P-C-Cu-based alloy, an Fe-B-Si-P-Cu-based alloy, or an Fe-B-P-Cu-based alloy, with a first initial crystallization temperature Tx1 and a second initial crystallization temperature Tx2; and a coating formed on a surface of particles of the amorphous powder; applying a compacting pressure to the coated powder or a mixture of the coated powder and the amorphous powder at a temperature equal to or lower than Tx1−100 K; and heating to a maximum end-point temperature equal to or higher than Tx1−50 K and lower than Tx2 with the compacting pressure being applied.
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8.发明公开公开(公告)号：US20230175789A1
公开(公告)日：2023-06-08
申请号：US17924167
申请日：2021-05-14
Inventor： Yoshiaki KINEMUCHI , Asaya FUJITA , Hiroyuki NAKAYAMA , Kimihiro OZAKI , Haruka ABE
Abstract: A solid heat storage material includes a bonding of vanadium dioxide and a highly thermally conductive substance higher in thermal conductivity than the vanadium dioxide, the highly thermally conductive substance being dispersed in the vanadium dioxide, the vanadium dioxide and the highly thermally conductive substance adhering closely and densely together, the highly thermally conductive substance having a volume fraction of 0.03 or more.
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9.发明申请公开(公告)号：US20180318923A1
公开(公告)日：2018-11-08
申请号：US16031891
申请日：2018-07-10
Applicant: Murata Manufacturing Co., Ltd. , NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
Inventor： Satoshi OGA , Kenta TAKAGI , Kimihiro OZAKI
CPC classification number: B22F1/0085 , B22F1/00 , B22F1/0088 , C22C38/00 , C22C38/005 , H01F1/059 , H01F41/02 , H01F41/0253
Abstract: A raw material for a magnet, which comprises Sm and Fe. A magnet is obtained by nitriding this raw material for a magnet. In particular, a raw material for a magnet comprises an Sm—Fe binary alloy as a main component. An intensity ratio of an Sm2Fe17 (024) peak to an SmFe7 (110) peak is less than 0.001 as measured by an X-ray diffraction method.
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