公开(公告)号：US20220351884A1

公开(公告)日：2022-11-03

申请号：US17763865

申请日：2020-09-30

Applicant: TDK Corporation

Inventor： Hajime AMANO ,  Kazuhiro YOSHIDOME ,  Kenji HORINO ,  Hiroyuki MATSUMOTO

IPC: H01F1/153 ,  C22C45/02

Abstract: A soft magnetic alloy contains Fe and at least one of metalloid element. An amorphous material and a nanocrystal having a grain size of 5 to 30 nm are mixed. A coefficient of determination between an atomic concentration of Fe and an atomic concentration of the at least one of metalloid element is 0.700 or more.

公开(公告)号：US20220319748A1

公开(公告)日：2022-10-06

申请号：US17672373

申请日：2022-02-15

Applicant: TDK CORPORATION

Inventor： Hironobu KUMAOKA ,  Kazuhiro YOSHIDOME ,  Hiroyuki MATSUMOTO ,  Akito HASEGAWA

IPC: H01F1/153 ,  C22C45/04 ,  C22C45/02

Abstract: A soft magnetic alloy including an internal area having a soft magnetic type alloy composition including Fe and P (phosphorous), and
a P concentrated area existing closer to a surface side than the internal area and having a higher P concentration than in the internal area.

公开(公告)号：US20210323064A1

公开(公告)日：2021-10-21

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：US20210301377A1

公开(公告)日：2021-09-30

申请号：US17210056

申请日：2021-03-23

Applicant: TDK CORPORATION

Inventor： Kazuhiro YOSHIDOME ,  Satoko MORI ,  Hiroyuki MATSUMOTO

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

Abstract: The present invention provides a soft magnetic alloy having good soft magnetic properties. The soft magnetic alloy includes nanocrystals having an average Heywood diameter value of 5.0 nm or more and 25.0 nm or less, in which an average circularity of the nanocrystals is 0.50 or more and 0.90 or less.

公开(公告)号：US20200279675A1

公开(公告)日：2020-09-03

申请号：US16800299

申请日：2020-02-25

Applicant: TDK CORPORATION

Inventor： Kazuhiro YOSHIDOME ,  Hiroyuki MATSUMOTO ,  Hitoshi OHKUBO ,  Atsuyuki NAKANO

IPC: H01F1/147 ,  H01F27/245 ,  C22C38/12 ,  C22C38/02 ,  C22C38/00

Abstract: A coil component having high inductance while suppressing core loss is obtained. The coil component includes a coil and a magnetic core. The magnetic core has a laminated body in which soft magnetic layers are laminated. Micro gaps are formed in the soft magnetic layers. The soft magnetic layers are divided into at least two or more small pieces by the micro gaps. A structure made of Fe-based nano-crystals is observed in the soft magnetic layers.

公开(公告)号：US20190385770A1

公开(公告)日：2019-12-19

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 ,  C22C45/02 ,  C22C38/14 ,  C22C38/12 ,  C22C38/00

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：US20190279801A1

公开(公告)日：2019-09-12

申请号：US16296348

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: H01F1/38 ,  B22F1/02

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

公开(公告)号：US20190279798A1

公开(公告)日：2019-09-12

申请号：US16296367

申请日：2019-03-08

Applicant: TDK CORPORATION

Inventor： Satoko MORI ,  Hiroyuki MATSUMOTO ,  Kenji HORINO ,  Kazuhiro YOSHIDOME ,  Takuma NAKANO ,  Seigo TOKORO ,  Shota OTSUKA ,  Toru UJIIE ,  Kentaro MORI

IPC: H01F1/20 ,  H01F1/147 ,  H01F1/36 ,  H01F3/08

Abstract: A soft magnetic metal powder comprising soft magnetic metal particles including Fe, wherein a surface of the soft magnetic metal particle is covered by a coating part having an insulation property, and the coating part includes a soft magnetic metal fine particle.

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：US20180218810A1

公开(公告)日：2018-08-02

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

CPC classification number: H01F1/15308 ,  B22F1/0018 ,  B22F9/082 ,  B22F2009/0828 ,  C22C33/003 ,  C22C38/002 ,  C22C38/004 ,  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 ,  H01F1/15333 ,  H01F27/255 ,  H01F27/2823 ,  H01F41/0226 ,  H01F41/0246 ,  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.