公开(公告)号：US20240071660A1

公开(公告)日：2024-02-29

申请号：US18458639

申请日：2023-08-30

Applicant: TDK CORPORATION

Inventor： Akito HASEGAWA ,  Yoshiki KAJIURA ,  Masakazu HOSONO ,  Kazuhiro YOSHIDOME

IPC: H01F1/147 ,  H01F3/08

CPC classification number: H01F1/14758 ,  H01F3/08

Abstract: A soft magnetic alloy powder comprises a component having a compositional formula ((Fe(1−(α+β))CoαNiβ)(1−γ)X1γ)(1−(a+b+c+d+e))BaPbSicCdCre in atomic ratio. X1 comprises at least one selected from specific elements. Values of a, b, c, d, e, α, β, and γ of the compositional formula satisfy specific ranges. The soft magnetic alloy powder comprises soft magnetic alloy particles including soft magnetic alloy particles having a particle size of (0.95×D90) or more and (1.05×D90) or less. An average Wadell's circularity of the soft magnetic alloy particles having the particle size of (0.95×D90) or more and (1.05×D90) or less is 0.75 or more. A variance of Wadell's circularity of the soft magnetic alloy particles having the particle size of (0.95×D90) or more and (1.05×D90) or less is 0.035 or less.

公开(公告)号：US20190221341A1

公开(公告)日：2019-07-18

申请号：US16234941

申请日：2018-12-28

Applicant: TDK CORPORATION

Inventor： Kazuhiro YOSHIDOME ,  Akihiro HARADA ,  Hiroyuki MATSUMOTO ,  Kenji HORINO ,  Akito HASEGAWA ,  Kensuke ARA ,  Hajime AMANO ,  Masakazu HOSONO

IPC: H01F1/153 ,  C22C38/00

CPC classification number: H01F1/15325 ,  B22F9/082 ,  B22F2301/355 ,  C22C38/00 ,  C22C38/002 ,  C22C38/005 ,  C22C45/02 ,  C22C2202/02 ,  H01F1/153 ,  H01F1/15308 ,  H01F1/15333 ,  H01F41/02 ,  H01F41/0226 ,  H01F41/0246

Abstract: A soft magnetic alloy includes a main component of (Fe(1-(α+β))X1αX2β)(1-(a+b+c+d+e+f+g))MaBbPcSidCeSfTig. 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：US20240071663A1

公开(公告)日：2024-02-29

申请号：US18458597

申请日：2023-08-30

Applicant: TDK CORPORATION

Inventor： Masakazu HOSONO ,  Kazuhiro YOSHIDOME ,  Akito HASEGAWA ,  Yoshiki KAJIURA

IPC: H01F1/20 ,  B22F1/052 ,  B22F1/06 ,  B22F1/142 ,  B22F3/02 ,  B22F3/24 ,  B22F5/10 ,  B22F9/00 ,  B22F9/08 ,  C22C33/04 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/16 ,  C22C38/30 ,  C22C38/32 ,  C22C38/34

CPC classification number: H01F1/20 ,  B22F1/052 ,  B22F1/06 ,  B22F1/142 ,  B22F3/02 ,  B22F3/24 ,  B22F5/106 ,  B22F9/007 ,  B22F9/082 ,  C22C33/04 ,  C22C38/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/105 ,  C22C38/12 ,  C22C38/16 ,  C22C38/30 ,  C22C38/32 ,  C22C38/34 ,  H01F27/255

Abstract: A soft magnetic alloy powder comprises first particles to fifth particles, each having a particle size within a specific range. Among the first particles to the fifth particles, nth particles have an average particle size xn (μm), an average circularity yn, and a variance zn of circularity, where nth is any ordinal number from first to fifth. Points (xn, yn) (n=1 to 5) plotted in an xy plane define an approximate straight line having a slope “my” of −0.0030 or more. Points (xn, zn) (n=1 to 5) plotted in an xz plane define an approximate straight line having a slope “mz” of 0.00050 or less.

公开(公告)号：US20190108931A1

公开(公告)日：2019-04-11

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 ,  C22C38/00 ,  C22C38/12

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≤c≤0.030, 0≤d≤0.030, α≥0, β≥0, and 0≤α+β≤0.50 are satisfied. In the soft magnetic alloy, a content of Ti is 0.001 to 0.100 wt %, a content of Mn is 0.001 to 0.150 wt %, and a content of Al is 0.001 to 0.100 wt %.

公开(公告)号：US20230095146A1

公开(公告)日：2023-03-30

申请号：US17944834

申请日：2022-09-14

Applicant: TDK CORPORATION

Inventor： Masakazu HOSONO ,  Kazuhiro YOSHIDOME ,  Yoshiki KAJIURA ,  Hiroyuki MATSUMOTO

IPC: B22F9/08

Abstract: A metal powder producing apparatus includes a molten metal supply unit, a cylinder body, and a cooling liquid introduction unit. The molten metal supply unit discharges a molten metal. The cylinder body is capable of being formed with a layer of a cooling liquid for cooling the molten metal on an inner circumference surface of the cylinder body. The cooling liquid introduction unit supplies the cooling liquid to an upper inside of the cylinder body. The inner circumference surface of the upper inside of the cylinder body has a substantially elliptical shape.

公开(公告)号：US20210062308A1

公开(公告)日：2021-03-04

申请号：US16643981

申请日：2018-05-17

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: C22C38/16 ,  H01F1/153 ,  C22C38/02 ,  C22C38/00 ,  C22C38/14 ,  C22C38/12 ,  C22C38/10 ,  C22C38/08

Abstract: Provided is a soft magnetic alloy having a composition of a compositional formula (Fe(1−(α+β))X1αX2β)(1−(a+b+c+d+e))PaCbSicCudMe. X1 is one or more selected from a group consisting of Co and Ni, X2 is one or more selected from a group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Bi, N, 0, and rare earth elements, and M is one or more selected from the group consisting of Nb, Hf, Zr, Ta, Ti, Mo, W and V. 0.050≤a≤0.17, 0

公开(公告)号：US20190279799A1

公开(公告)日：2019-09-12

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 ,  H01F1/153 ,  H01F27/255

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 X 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, Zr, Ta, Mo, W, and V; 0.020≤a≤0.14, 0.020

公开(公告)号：US20190237229A1

公开(公告)日：2019-08-01

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 ,  C22C38/12 ,  C22C38/00 ,  B22D23/00 ,  C21D9/52 ,  C21D6/00

CPC classification number: H01F1/14733 ,  B22D23/003 ,  B22F1/00 ,  B22F3/00 ,  C21D1/26 ,  C21D1/30 ,  C21D6/00 ,  C21D6/001 ,  C21D6/007 ,  C21D6/008 ,  C21D8/1255 ,  C21D9/46 ,  C21D9/52 ,  C21D2201/03 ,  C22C33/02 ,  C22C33/0214 ,  C22C33/0257 ,  C22C33/0264 ,  C22C33/0271 ,  C22C33/0278 ,  C22C33/0285 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/08 ,  C22C38/10 ,  C22C38/105 ,  C22C38/12 ,  C22C38/16 ,  C22C38/40 ,  C22C38/52 ,  C22C45/008 ,  C22C45/02 ,  C22C45/04 ,  C22C2200/02 ,  C22C2200/04 ,  C22C2202/02 ,  H01F1/147 ,  H01F1/14716 ,  H01F1/14766 ,  H01F1/14775 ,  H01F1/14791 ,  H01F1/15308 ,  H01F1/15333

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：US20190221342A1

公开(公告)日：2019-07-18

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 ,  H01F1/147

CPC classification number: H01F1/15308 ,  C22C38/42 ,  C22C45/02 ,  H01F1/147 ,  H01F1/153 ,  H01F1/15333 ,  H01F41/02 ,  H01F41/0226 ,  H01F41/0246

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：US20210020342A1

公开(公告)日：2021-01-21

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.