公开(公告)号：US20180180643A1

公开(公告)日：2018-06-28

申请号：US15717488

申请日：2017-09-27

Applicant: TDK CORPORATION

Inventor： Yu YONEZAWA ,  Kazuhiro YOSHIDOME ,  Hideaki YOKOTA ,  Hiroyuki MATSUMOTO ,  Syota GOTO ,  Takehiro GOHARA

IPC: G01Q30/04

CPC classification number: G01Q30/04 ,  H01F1/15308

Abstract: An analysis method of a composition network topology structure includes obtaining a three-dimensional body for analysis capable of being used for three-dimensional measurement of a concentration distribution of a specific element contained in a sample within a predetermined measurement range. The three-dimensional body for analysis is divided into unit grids composed of a plurality of finer three-dimensional bodies. An amount of the specific element contained in each of the unit grids is obtained. Maximum-point grids respectively having a largest amount of the specific element among adjacent unit grids are obtained. The composition network topology structure of the specific element owned by the sample is quantified in relation to the maximum-point grids contained in the three-dimensional body for analysis.

公开(公告)号：US20180148853A1

公开(公告)日：2018-05-31

申请号：US15575587

申请日：2015-12-11

Applicant: TDK CORPORATION

Inventor： Ryoma NAKAZAWA ,  Kazuhiro YOSHIDOME

IPC: C25C7/02 ,  B32B15/04 ,  B32B18/00

CPC classification number: C25C7/025 ,  B22F5/00 ,  B22F7/02 ,  B22F7/064 ,  B22F2207/01 ,  B22F2998/10 ,  B22F2999/00 ,  B32B15/043 ,  B32B18/00 ,  B32B2311/12 ,  B32B2311/22 ,  B32B2315/02 ,  C22C29/12 ,  C22C1/05 ,  C22C1/0433 ,  C22C1/0425 ,  B22F1/0059 ,  B22F3/02 ,  B22F3/10 ,  B22F3/162 ,  B22F3/16

Abstract: A composite body has a cermet member, a metal member and an intermediate member. The cermet member includes a cermet oxide phase and a cermet metal phase. The cermet oxide phase contains a Ni-containing oxide or an Fe-containing oxide. The cermet metal phase contains Ni. The intermediate layer contains Cu. The mass proportions of Cu in the cermet metal phase at points which are spaced apart by 10, 50, 100 and 1000 μm from the interface between the cermet member and the intermediate layer to the cermet member side are denoted by C10, C50, C100 and C1000 (mass %). When the mass proportions of Cu in the cermet oxide phase at points which are spaced apart by 10 and 100 μm from the interface to the cermet member side are denoted by M10 and M100 (mass %), C10>C50>C100>C1000, and 5>M10−M100>−5.

公开(公告)号：US20180122542A1

公开(公告)日：2018-05-03

申请号：US15794566

申请日：2017-10-26

Applicant: TDK CORPORATION

Inventor： Hiroyuki MATSUMOTO ,  Kenji HORINO ,  Kazuhiro YOSHIDOME ,  Akihiro HARADA ,  Akito HASEGAWA ,  Hajime AMANO ,  Kensuke ARA ,  Masahito KOEDA ,  Seigo TOKORO

IPC: H01F1/153 ,  C22C38/00 ,  C22C38/32 ,  C22C38/28 ,  C22C45/00

CPC classification number: H01F1/15333 ,  B22D11/0611 ,  B82Y30/00 ,  C21D2201/03 ,  C22C33/003 ,  C22C38/002 ,  C22C38/004 ,  C22C38/005 ,  C22C38/008 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/30 ,  C22C38/32 ,  C22C38/48 ,  C22C38/54 ,  C22C45/008 ,  C22C45/02 ,  H01F1/15308 ,  H01F1/15341

Abstract: A soft magnetic alloy including a composition having a formula of ((Fe(1-(α+β))X1αX2β)(1-(a+b+c+d+e))MaBbPcCrdCue)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≤0.20, 0

公开(公告)号：US20180096765A1

公开(公告)日：2018-04-05

申请号：US15718617

申请日：2017-09-28

Applicant: TDK CORPORATION

Inventor： Kazuhiro YOSHIDOME ,  Hiroyuki MATSUMOTO ,  Yu YONEZAWA ,  Syota GOTO ,  Hideaki YOKOTA ,  Akito HASEGAWA ,  Masahito KOEDA ,  Seigo TOKORO

IPC: H01F1/147 ,  H01F27/255 ,  C22C38/16 ,  C22C38/12 ,  C22C38/02

CPC classification number: H01F1/14766 ,  C22C38/02 ,  C22C38/12 ,  C22C38/16 ,  H01F1/15308 ,  H01F27/255

Abstract: A soft magnetic alloy includes a main component of Fe. The soft magnetic alloy includes a Fe composition network phase where regions whose Fe content is larger than an average composition of the soft magnetic alloy are linked. The Fe composition network phase contains Fe content maximum points that are locally higher than their surroundings in 400,000/μm3 or more. A ratio of Fe content maximum points whose coordination number is 1 or more and 5 or less is 80% or more and 100% or less with respect to all of the Fe content maximum points.

公开(公告)号：US20250140454A1

公开(公告)日：2025-05-01

申请号：US18930236

申请日：2024-10-29

Applicant: TDK CORPORATION

Inventor： Yoshiki KAJIURA ,  Akito HASEGAWA ,  Kazuhiro YOSHIDOME

IPC: H01F1/147 ,  C22C38/00 ,  C22C38/02 ,  C22C38/30 ,  H01F27/255

Abstract: A magnetic core includes soft magnetic particles. The soft magnetic particles include large particles having a particle size of (0.5×V50) or more and small particles having a particle size of (2×N50) or less, where V10 denotes D10 of a volume-based particle size distribution of the soft magnetic particles, V50 denotes D50 of the volume-based particle size distribution of the soft magnetic particles, and N50 denotes D50 of a number-based particle size distribution of the soft magnetic particles. L50 is within a specific range, where L50 denotes a median of L of the small particles, and L denotes a distance from one of the small particles to one of the large particles nearest to the one of the small particles.

公开(公告)号：US20240145134A1

公开(公告)日：2024-05-02

申请号：US18175139

申请日：2023-02-27

Applicant: TDK CORPORATION

Inventor： Toshiki GUSHI ,  Kazuhiro YOSHIDOME ,  Akito HASEGAWA ,  Isao KANADA

IPC: H01F1/00 ,  G01N27/72

CPC classification number: H01F1/0054 ,  G01N27/72

Abstract: A polymer particle containing magnetic material includes a core and a polymer layer. The core includes magnetic fine particles. The polymer layer is located outside the core and surrounds the core. A shape ratio (Ric) is defined in each of the magnetic fine particles by dividing a diameter (Di) of an inscribed circle of the magnetic fine particle by a diameter (Do) of a circumscribed circle of the magnetic fine particle. The shape ratio (Ric) of the magnetic fine particle is 0.50 or more and 0.94 or less. The diameter (Di) of the magnetic fine particle is 5 nm or more. The diameter (Di) and the shape ratio (Ric) of the magnetic fine particle satisfy a relation formula of Di≤9.28×e{circumflex over ( )}(1.17×Ric).

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：US20230384298A1

公开(公告)日：2023-11-30

申请号：US18175036

申请日：2023-02-27

Applicant: TDK CORPORATION

Inventor： Yusuke ARIAKE ,  Kazuhiro YOSHIDOME ,  Isao KANADA

IPC: G01N33/543 ,  G01N27/74 ,  H01F1/20

CPC classification number: G01N33/54326 ,  G01N27/745 ,  H01F1/20

Abstract: A polymer particle containing magnetic material includes a core, an intermediate layer, and a polymer layer. The core includes magnetic fine particles having an average diameter of 5 nm or more and 30 nm or less. The intermediate layer is located outside the core and has a lower concentration of the magnetic fine particles than the core. The polymer layer covers the intermediate layer. A thickness of the intermediate layer is 5% or more and 60% or less of a radius of the polymer particle containing magnetic material.

公开(公告)号：US20230245809A1

公开(公告)日：2023-08-03

申请号：US18159390

申请日：2023-01-25

Applicant: TDK CORPORATION

Inventor： Hajime AMANO ,  Kensuke ARA ,  Kazuhiro YOSHIDOME ,  Risako TSURUMARU

IPC: H01F10/00 ,  H01F10/14 ,  H01F10/16

CPC classification number: H01F10/007 ,  H01F10/14 ,  H01F10/16

Abstract: A nanogranular magnetic film includes a structure including first phases comprised of nano-domains dispersed in a second phase. The first phases include at least one selected from the group consisting of Fe, Co, and Ni. The second phase includes at least one selected from the group consisting of O, N, and F. A ratio of a volume of the first phases to a total volume of the first phases and the second phase is 65% or less. A noble gas element is included at 0.20 at % or more and 0.80 at % or less.

公开(公告)号：US20230178275A1

公开(公告)日：2023-06-08

申请号：US17992378

申请日：2022-11-22

Applicant: TDK CORPORATION

Inventor： Masahito KOEDA ,  Satoko MORI ,  Kazuhiro YOSHIDOME ,  Hiroyuki MATSUMOTO

IPC: H01F1/147 ,  H01F3/08 ,  H01F1/153

CPC classification number: H01F1/1475 ,  H01F3/08 ,  H01F1/15383 ,  H01F1/15308

Abstract: A soft magnetic metal powder including a soft magnetic metal particle. The soft magnetic metal particle includes a metal particle and an oxide part covering the metal particle. An interface between the metal particle and the oxide part has roughness. A maximum height Rz of roughness at the interface between the metal particle and the oxide part is within a range of 1.0 nm or more and 50.0 nm or less.