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：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：US11887760B2

公开(公告)日：2024-01-30

申请号：US17519773

申请日：2021-11-05

Applicant: TDK CORPORATION

Inventor： Kensuke Ara ,  Hajime Amano

IPC: H01F1/153 ,  C22C45/02

CPC classification number: H01F1/15308 ,  C22C45/02 ,  H01F1/15333

Abstract: There is provided a soft magnetic alloy comprising a composition expressed by a formula of (Fe(1-α)Aα)(1-m-x-y)MmXxYy, in which M represents at least one selected from the group consisting of Zr and Hf, X represents at least one selected from the group consisting of Ni, Mn, Cu, Co, Al, and Ge, Y represents at least one selected from the group consisting of B, P, and Si, A represents at least one selected from the group consisting of Ti, V, Cr, Zn, Mg, Sn, Bi, O, N, S, and a rare earth element, m, x, y, and α satisfy relationships of 0.070≤m≤0.120, 0.001≤x≤0.030, 0≤y≤0.010, and 0≤α≤0.100, and the alloy contains Fe-based nanocrystals having an average crystal grain size of 30 nm or less.

公开(公告)号：US11521770B2

公开(公告)日：2022-12-06

申请号：US16430585

申请日：2019-06-04

Applicant: TDK CORPORATION

Inventor： Kazuhiro Yoshidome ,  Hiroyuki Matsumoto ,  Kenji Horino ,  Hajime Amano ,  Akito Hasegawa

IPC: H01F1/153 ,  C22C38/14 ,  C22C38/00 ,  C22C38/12 ,  C22C45/02 ,  H01F41/02

Abstract: A soft magnetic alloy includes a composition of (Fe(1-(α+β))X1αX2β)(1-(a+b+c+d+e+f+g))MaTibBcPdSieSfCg. X1 is one or more of Co and Ni. X2 is one or more of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements. M is one or more of Nb, Hf, Zr, Ta, Mo, W, and V. 0.020≤a+b≤0.140, 0.001≤b≤0.140, 0.020

公开(公告)号：US11081266B2

公开(公告)日：2021-08-03

申请号：US16296559

申请日：2019-03-08

Applicant: TDK CORPORATION

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

IPC: H01F3/00 ,  H01F1/153 ,  H01F1/147 ,  H01F27/24 ,  H01F1/33 ,  H01F3/08 ,  H01F1/26 ,  H01F1/24 ,  H01F41/02

Abstract: Soft magnetic alloy powder includes plurality of soft magnetic alloy particles of soft magnetic alloy represented by composition formula (Fe(1−(α+β))X1αX2β)(1−(a+b+c++e+f+g))MaBbPcSidCeSfTig, wherein X1 represents Co and/or Ni; X2 represents at least one selected from 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 group consisting of Nb, Hf, Zr, Ta, Mo, W, and V; 0.020≤a≤0.14, 0.020

公开(公告)号：US12165794B2

公开(公告)日：2024-12-10

申请号：US16260715

申请日：2019-01-29

Applicant: TDK CORPORATION

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

IPC: H01F1/147 ,  B22D23/00 ,  B22F1/07 ,  C21D1/26 ,  C21D1/30 ,  C21D6/00 ,  C21D8/12 ,  C21D9/46 ,  C21D9/52 ,  C22C33/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/16 ,  C22C45/00 ,  C22C45/02 ,  C22C45/04 ,  H01F1/153 ,  B22F9/02 ,  B22F9/04 ,  C22C38/40 ,  C22C38/52

Abstract: A soft magnetic alloy has a main component of Fe. The soft magnetic alloy contains P. A Fe-rich phase and a Fe-poor phase are contained. An average concentration of P in the Fe-poor phase is 1.5 times or larger than an average concentration of P in the soft magnetic alloy by number of atoms.

公开(公告)号：US11972884B2

公开(公告)日：2024-04-30

申请号：US16244633

申请日：2019-01-10

Applicant: TDK CORPORATION

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

IPC: H01F1/153 ,  C22C38/42 ,  C22C45/02 ,  H01F1/147 ,  H01F41/02

CPC classification number: H01F1/15325 ,  H01F1/14741 ,  H01F1/15308 ,  H01F1/15333 ,  H01F41/0226 ,  H01F41/0246 ,  C22C38/42 ,  C22C45/02

Abstract: A soft magnetic alloy includes a main component of (Fe(1−(α+β))X1αX2β)(1−(a+b+c+d+e))MaBbPcSidCe. X1 is one or more of Co and Ni. X2 is one or more of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements. M is one or more of Nb, Hf, Zr, Ta, Mo, W, and V. 0.020≤a≤0.14 is satisfied. 0.020

公开(公告)号：US11495377B2

公开(公告)日：2022-11-08

申请号：US16971338

申请日：2019-02-15

Applicant: TDK CORPORATION

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

IPC: H01F1/153 ,  C22C45/00

Abstract: Provided is a soft magnetic alloy which has high saturation flux density and low coercivity and is represented by the compositional formula (Fe(1−(α+β))X1αX2β)(1−(a+b+c+d+e+f))MaPbSicCudX3eBf, wherein X1 is at least one element selected from the group consisting of Co and Ni, X2 is at least one element selected from the group consisting of Ti, V, Mn, Ag, Zn, Al, Sn, As, Sb, Bi, and rare earth elements, X3 is at least one element selected from the group consisting of C and Ge, and M is at least one element selected from the group consisting of Zr, Nb, Hf, Ta, Mo, and W, and wherein 0.030≤a≤0.120, 0.010≤b≤0.150, 0≤c≤0.050, 0≤d≤0.020, 0≤e≤0.100, 0≤f≤0.030, α≥0, β≥0, and 0≤α+β≤0.55.

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