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    Soft magnetic alloy and magnetic device
    12.
    发明授权
    Soft magnetic alloy and magnetic device 有权

    公开(公告)号：US10535455B2

    公开(公告)日：2020-01-14

    申请号：US15880920

    申请日：2018-01-26

    Applicant: TDK CORPORATION

    Inventor： Akihiro Harada ,  Hiroyuki Matsumoto ,  Kenji Horino ,  Kazuhiro Yoshidome ,  Akito Hasegawa ,  Hajime Amano ,  Kensuke Ara ,  Seigo Tokoro ,  Shota Otsuka

    IPC: H01F27/255 ,  H01F1/153 ,  H01F27/28 ,  H01F41/02 ,  H01F41/06

    Abstract: A soft magnetic alloy including a main component having a compositional formula of (Fe(1−(α+β))X1αX2β)(1−(a+b+c))MaBbPc, and a sub component including at least C, S and Ti, wherein X1 is one or more selected from the group including Co and Ni, X2 is one or more selected from the group including Al, Mn, Ag, Zn, Sn, As, Sb, Bi, and rare earth elements, “M” is one or more selected from the group including Nb, Hf, Zr, Ta, Mo, W, and V, 0.020≤a≤0.14, 0.020≤b≤0.20, 0≤c≤0.040, α≥0, β≥0, and 0≤α+β≤0.50 are satisfied, when entire said soft magnetic alloy is 100 wt %, a content of said C is 0.001 to 0.050 wt %, a content of said S is 0.001 to 0.050 wt %, and a content of said Ti is 0.001 to 0.080 wt %, and when a value obtained by dividing the content of said C by the content of said S is C/S, then C/S satisfies 0.10≤C/S≤10.

    Soft magnetic alloy and magnetic component
    13.
    发明授权
    Soft magnetic alloy and magnetic component 有权

    公开(公告)号：US12211634B2

    公开(公告)日：2025-01-28

    申请号：US16765915

    申请日：2018-08-21

    Applicant: TDK CORPORATION

    Inventor： Akihiro Harada ,  Akito Hasegawa ,  Kazuhiro Yoshidome ,  Kenji Horino ,  Hiroyuki Matsumoto

    IPC: H01F1/153 ,  C22C38/02 ,  C22C38/16 ,  C22C45/02

    Abstract: A soft magnetic alloy or the like combines high saturated magnetic flux density, low coercive force and high magnetic permeability μ′. A soft magnetic alloy having the composition formula (Fe(1−(α+β))X1αX2β)(1−(a+b+c+d+e))BaSibCcCudMe. X1 is one or more elements selected from the group consisting of Co and Ni, X2 is one or more elements selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, O and rare earth elements, and M is one or more elements selected from the group consisting of Nb, Hf, Zr, Ta, Ti, Mo, μ′ and V. 0.090≤a≤0.240, 0.030.

    Soft magnetic alloy ribbon and magnetic device
    16.
    发明授权
    Soft magnetic alloy ribbon and magnetic device 有权

    公开(公告)号：US11427896B2

    公开(公告)日：2022-08-30

    申请号：US16961583

    申请日：2018-12-03

    Applicant: TDK CORPORATION

    Inventor： Akito Hasegawa ,  Hironobu Kumaoka ,  Kazuhiro Yoshidome ,  Hiroyuki Matsumoto ,  Kenji Horino ,  Isao Nakahata

    IPC: C22C38/12 ,  H01F1/147 ,  C22C38/02 ,  C22C38/00 ,  B22D23/00 ,  C21D6/00 ,  C21D9/52 ,  C22C45/02

    Abstract: A soft magnetic alloy thin strip which has high saturation magnetic flux density and low coercivity, which enables a core with high space factor and high saturation magnetic flux density. A soft magnetic alloy thin strip including a main component that has a composition formula (Fe(1−(α+β))X1αX2β)(1−(a+b+c+d+e+f))MaBbPcSidCeSf. In the formula, X1, X2 and M are selected from a specific element group; 0≤a≤0.140, 0.020≤b≤0.200, 0≤c≤0.150, 0≤d≤0.090, 0≤e≤0.030, 0≤f≤0.030, α≥0, β≥0, and 0≤α+β≤0.50; and at least one of a, c and d is larger than 0. The strip has a structure that is composed of an Fe-based nanocrystal; and the surface roughness of a release surface satisfies 0.85≤Rae/Rac≤1.25 (wherein Rac is the average of arithmetic mean roughnesses in the central portion, and Rae is the average in the edge portion).

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