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    SOFT MAGNETIC ALLOY AND MAGNETIC COMPONENT
    2.
    发明申请
    SOFT MAGNETIC ALLOY AND MAGNETIC COMPONENT 有权

    公开(公告)号：US20220319749A1

    公开(公告)日：2022-10-06

    申请号：US17672258

    申请日：2022-02-15

    Applicant: TDK CORPORATION

    Inventor： Hironobu KUMAOKA ,  Kazuhiro YOSHIDOME ,  Akito HASEGAWA ,  Satoko MORI

    IPC: H01F1/153 ,  C22C38/30 ,  C22C38/02 ,  C22C38/00

    Abstract: A soft magnetic alloy comprising an internal area having a soft magnetic type alloy composition including Fe and Co, a Co concentrated area existing closer to a surface side than the internal area and having a higher Co concentration than in the internal area, a SB concentrated area existing closer to the surface side than the Co concentrated area and having a higher concentration of at least one element selected from Si and B than in the internal area, and a Fe concentrated area including Fe existing closer to the surface side than the SB concentrated area; wherein a crystalized area ratio of the SB concentrated area represented by SSBcry/SSB and a crystalized area ratio of the Fe concentrated area represented by SFecry/SFe, satisfy a relation of (SSBcry/SSB)

    MAGNETIC CORE AND MAGNETIC COMPONENT
    7.
    发明申请
    MAGNETIC CORE AND MAGNETIC COMPONENT 有权

    公开(公告)号：US20240404743A1

    公开(公告)日：2024-12-05

    申请号：US18677053

    申请日：2024-05-29

    Applicant: TDK CORPORATION

    Inventor： Masahito KOEDA ,  Kensuke ARA ,  Satoko MORI

    IPC: H01F27/255 ,  H01F27/28

    Abstract: A magnetic core includes a soft magnetic powder. The soft magnetic powder accounts for an area ratio of 75% or more and 90% or less of a section of the magnetic core on average. The area ratio of the soft magnetic powder has a distribution with a skewness of 0.01 or more in absolute value. The distribution of the area ratio of the soft magnetic powder is identified by calculating area ratios of the soft magnetic powder in respective square regions defined by dividing the section of the magnetic core using a regular-interval grid.

    NANOGRANULAR MAGNETIC FILM AND ELECTRONIC COMPONENT
    8.
    发明公开
    NANOGRANULAR MAGNETIC FILM AND ELECTRONIC COMPONENT 审中-公开

    公开(公告)号：US20230272512A1

    公开(公告)日：2023-08-31

    申请号：US18112238

    申请日：2023-02-21

    Applicant: TDK CORPORATION

    Inventor： Satoko MORI ,  Hajime AMANO ,  Kazuhiro YOSHIDOME ,  Hiroyuki MATSUMOTO

    IPC: C22C38/10 ,  H01F1/147

    CPC classification number: C22C38/10 ,  H01F1/14733 ,  C22C2202/02

    Abstract: A nanogranular magnetic film comprises a structure including first phases comprised of nano-domains dispersed in a second phase. A ratio of a volume of the first phases to a total volume of the first phases and the second phase is 65% or less. A largest one of A(Fe1)/A(Fe2), A(Co1)/A(Co2), and A(Ni1)/A(Ni2) has a value of 1.20 or more and 8.00 or less, provided that a percentage of Fe in the first phases is A(Fe1), a percentage of Fe in the second phase is A(Fe2), a percentage of Co in the first phases is A(Co1), a percentage of Co in the second phase is A(Co2), a percentage of Ni in the first phases is A(Ni1), and a percentage of Ni in the second phase is A(Ni2). The first phases comprised of the nano-domains have an average size of 2 nm or more and 30 nm or less.

    SOFT MAGNETIC METAL POWDER AND ELECTRONIC COMPONENT
    10.
    发明申请
    SOFT MAGNETIC METAL POWDER AND ELECTRONIC COMPONENT 有权

    公开(公告)号：US20210035720A1

    公开(公告)日：2021-02-04

    申请号：US16939484

    申请日：2020-07-27

    Applicant: TDK Corporation

    Inventor： Satoko MORI ,  Kazuhiro YOSHIDOME ,  Akito HASEGAWA ,  Hiroyuki MATSUMOTO

    IPC: H01F1/153 ,  B22F1/02 ,  C22C38/12 ,  C22C38/14 ,  C22C38/00

    Abstract: Provided is a soft magnetic metal powder including a plurality of soft magnetic metal particles. Each of the soft magnetic metal particles includes a metal particle and an oxidized part covering the metal particle. The metal particle includes at least Fe. The oxidized part includes at least one kind of element of S and an element M. The element M is at least one kind of element selected from the group consisting of Nb, Ta, W, Zr, Hf, and Cr. A unit of a concentration of each of S and the element M in the metal particle and the oxidized part is atom %. The concentration of S or the element M in the metal particle and the oxidized part has a maximum value in the oxidized part.

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