公开(公告)号：US11783974B2

公开(公告)日：2023-10-10

申请号：US15881227

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

IPC: H01F1/153 ,  C22C33/00 ,  C22C38/08 ,  C22C38/00 ,  C22C38/06 ,  H01F1/147 ,  C22C33/02 ,  C22C38/10 ,  C22C45/02 ,  C22C38/18 ,  C22C38/04 ,  C22C38/14 ,  C22C38/60 ,  C22C38/12 ,  C22C38/32 ,  B22F1/07 ,  H01F27/25 ,  H01F41/02 ,  B22F9/00 ,  C22C45/00

CPC classification number: H01F1/15333 ,  B22F1/07 ,  C22C33/003 ,  C22C33/02 ,  C22C38/002 ,  C22C38/005 ,  C22C38/007 ,  C22C38/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/32 ,  C22C38/60 ,  C22C45/02 ,  H01F1/14708 ,  H01F1/15308 ,  H01F1/15325 ,  H01F1/15341 ,  H01F27/25 ,  H01F41/0226 ,  B22F9/002 ,  C22C45/008 ,  C22C2202/02

Abstract: A soft magnetic alloy comprising a main component having a compositional formula of ((Fe(1−(α+β))X1αX2β)(1−(a+b+c))MaBbCrc)1−dCd, and a sub component including P, S and Ti, wherein X1 is selected from the group Co and Ni, X2 is selected from the group Al, Mn, Ag, Zn, Sn, As, Sb, Bi and rare earth elements, “M” is selected from the group Nb, Hf, Zr, Ta, Mo, W and V, 0.030≤a≤0.14, 0.005≤b≤0.20, 0

公开(公告)号：US10748688B2

公开(公告)日：2020-08-18

申请号：US15794578

申请日：2017-10-26

Applicant: TDK CORPORATION

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

IPC: C22C38/28 ,  H01F1/153 ,  C22C38/00 ,  C22C38/26 ,  C22C38/42 ,  B82Y25/00 ,  C22C38/48 ,  C22C38/20 ,  C22C38/32 ,  C22C33/02 ,  C22C45/02 ,  H01F41/02

Abstract: A soft magnetic alloy including a composition having a formula of ((Fe(1−(α+β))X1αX2β)(1−(a+b+d+e))MaBbCrdCue)1−fCf. X1 is one or more elements selected from a group of Co and Ni. X2 is one or more elements selected from a group of W, Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, O, and rare earth elements. M is one or more elements selected from a group of Nb, Hf, Zr, Ta, Ti, Mo, and V. 0.030≤a≤0.14, 0.028≤b≤0.15, 0.005≤d≤0.020, 0

公开(公告)号：US11763969B2

公开(公告)日：2023-09-19

申请号：US16296626

申请日：2019-03-08

Applicant: TDK CORPORATION

Inventor： Kazuhiro Yoshidome ,  Hiroyuki Matsumoto ,  Kenji Horino ,  Satoko Mori ,  Takuma Nakano ,  Seigo Tokoro ,  Shota Otsuka ,  Toru Ujiie ,  Kentaro Mori

IPC: H01F1/26 ,  H01F1/38 ,  H01F1/33 ,  H01F1/24 ,  H01F3/08 ,  B22F1/16 ,  H01F27/255 ,  H01F41/02 ,  H01F1/153

CPC classification number: H01F1/26 ,  B22F1/16 ,  H01F1/24 ,  H01F1/33 ,  H01F1/38 ,  H01F3/08 ,  B22F2301/35 ,  B22F2304/10 ,  H01F1/15308 ,  H01F1/15333 ,  H01F27/255 ,  H01F41/0246

Abstract: A soft magnetic metal powder having soft magnetic metal particles including Fe, wherein a surface of the soft magnetic metal particle is covered by a coating part, the coating part has a first coating part and a second coating part in this order from the surface of the soft magnetic metal particle towards outside, the first coating part includes oxides of Fe as a main component, the second coating part includes a compound of at least one element selected from the group consisting of P, Si, Bi, and Zn, and a ratio of trivalent Fe atom among Fe atoms of oxides of Fe included in the first coating part is 50% or more.

公开(公告)号：US11508502B2

公开(公告)日：2022-11-22

申请号：US16766161

申请日：2018-08-21

Applicant: TDK CORPORATION

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

IPC: H01F1/153 ,  C22C38/10 ,  C22C38/12 ,  C22C38/16 ,  C22C38/26 ,  C22C38/06 ,  C22C38/08 ,  C22C38/14 ,  C22C38/00 ,  C22C45/02 ,  C21D6/00 ,  H01F1/147 ,  C22C38/02 ,  H01F1/12 ,  B22F1/00 ,  B22F3/00 ,  H01F1/14 ,  C22C45/00

Abstract: A soft magnetic alloy or the like combining high saturated magnetic flux density, low coercive force and high magnetic permeability μ′ having the composition formula (Fe(1−(α+β))X1αX2β)(1−(a+b+c+d+e))BaSibCcCudMe. X1 is one 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, W and V. 0.140

公开(公告)号：US11145448B2

公开(公告)日：2021-10-12

申请号：US16296378

申请日：2019-03-08

Applicant: TDK CORPORATION

Inventor： Masakazu Hosono ,  Kenji Horino ,  Hiroyuki Matsumoto ,  Kazuhiro Yoshidome ,  Akito Hasegawa ,  Hajime Amano ,  Isao Nakahata

IPC: H01F1/24 ,  H01F27/255 ,  B22F1/02 ,  B22F1/00 ,  C22C45/00 ,  H01F1/153 ,  H01F3/08

Abstract: A soft magnetic alloy powder includes a plurality of soft magnetic alloy particles of a soft magnetic alloy represented by a composition formula (Fe(1−(α+β))X1αX2β)(1−(a+b+c+d+e))MaBbPcSidCe, wherein X1 represents Co and/or Ni; X2 represents at least one selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements; M represents at least one selected from the group consisting of Nb, Hf, Zr, Ta, Mo, W, and V; 0.020≤a≤0.14, 0.020

公开(公告)号：US11628500B2

公开(公告)日：2023-04-18

申请号：US17363109

申请日：2021-06-30

Applicant: TDK CORPORATION

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

IPC: B22F9/08

Abstract: A metal powder producing apparatus comprising a melted metal supplying part discharging a melted metal, a cylinder body provided below the melted metal supplying part, and a cooling liquid layer forming part forming a flow of a cooling liquid for cooling the melted metal discharged from the melted metal supplying part along an inner circumference face of the cylinder body, wherein the cooling liquid layer forming part has a primary pressure reservoir, and the primary pressure reservoir is provided on an outer circumference part of the cylinder body.

公开(公告)号：US11328847B2

公开(公告)日：2022-05-10

申请号：US15881118

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: H01F1/153 ,  C22C45/00 ,  C22C38/00 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C45/02

Abstract: A soft magnetic alloy including a compositional formula of ((Fe(1−(α+β))X1αX2β)(1−(a+b+c+e))MaBbPcCue)1−fCf, wherein X1 is one or more selected from the group consisting Co and Ni, X2 is one or more selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, O, and rare earth elements, “M” is one or more selected from the group consisting of Nb, Hf, Zr, Ta, Ti, Mo, W, and V, 0.030

公开(公告)号：US11189408B2

公开(公告)日：2021-11-30

申请号：US15904986

申请日：2018-02-26

Applicant: TDK CORPORATION

Inventor： Kazuhiro Yoshidome ,  Hiroyuki Matsumoto ,  Kenji Horino ,  Akito Hasegawa ,  Yu Yonezawa ,  Syota Goto ,  Seigo Tokoro

IPC: H01F1/153 ,  C22C45/02 ,  C22C38/20 ,  C22C33/00 ,  C22C38/04 ,  C22C38/02 ,  H01F41/02 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16

Abstract: Provided is a soft magnetic alloy including Fe as a main component, in which a slope of an approximate straight line, plotted between cumulative frequencies of 20 to 80% on Fe content in each grid of 80000 grids or more, each of which has 1 nm×1 nm×1 nm, is −0.1 to −0.4, provided that Fe content (atom %) of each grid is Y axis, and the cumulative frequencies (%) obtained in descending order of Fe content in each grid is X axis, and an amorphization ratio X is 85% or more.

公开(公告)号：US11158443B2

公开(公告)日：2021-10-26

申请号：US16146268

申请日：2018-09-28

Applicant: TDK CORPORATION

Inventor： Akihiro Harada ,  Hiroyuki Matsumoto ,  Kenji Horino ,  Kazuhiro Yoshidome ,  Akito Hasegawa ,  Hajime Amano ,  Kensuke Ara ,  Seigo Tokoro ,  Masakazu Hosono ,  Takuma Nakano ,  Satoko Mori

IPC: H01F1/147 ,  C22C38/14 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  H01F1/153 ,  C22C38/00

Abstract: A soft magnetic alloy contains a main component having a composition formula of (Fe(1−(α+β))X1αX2β)(1−(a+b+c+d))MaBbPcCd and auxiliary components including at least Ti, Mn and Al. In the composition formula, X1 is one or more selected from the group consisting of Co and Ni, X2 is one or more selected from the group consisting of Ag, Zn, Sn, As, Sb, Bi and a rare earth element, and M is one or more selected from the group consisting of Nb, Hf, Zr, Ta, Mo, W and V. In the composition formula, 0.030≤a≤0.100, 0.050≤b≤0.150, 0

公开(公告)号：US10991495B2

公开(公告)日：2021-04-27

申请号：US16221977

申请日：2018-12-17

Applicant: TDK CORPORATION

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

IPC: H01F1/26 ,  H01F1/147 ,  H01F1/38 ,  H01F41/02 ,  H01F1/153

Abstract: A soft magnetic alloy which includes nanocrystal parts and amorphous parts is provided. The nanocrystal parts include αFe(—Si) as a main component, and include at least one of elements selected from B, P, C, Ti, Zr, Hf, Nb, Ta, Mo, V, W, Cr, Al, Mn, Zn, and Cu as a sub-component. When a total content ratio of the sub-component in the nanocrystal parts is set as α (at %), and a total content ratio of the sub-components of the nanocrystal parts included in the amorphous parts is set as β (at %), 0.01≤(α/β)≤0.40, and a crystallinity degree is 5% or more and 70% or less.