公开(公告)号：US12014868B2

公开(公告)日：2024-06-18

申请号：US17165933

申请日：2021-02-02

申请人： CYNTEC CO., LTD.

发明人： Yi-Cheng Lin

IPC分类号： H05K1/09 ,  H01F27/255 ,  H01F41/02 ,  H05K1/11 ,  H05K1/18 ,  H05K3/34 ,  H05K3/40 ,  H01F1/22

CPC分类号： H01F41/0233 ,  H01F27/255 ,  H01F41/0246 ,  H05K1/09 ,  H05K1/111 ,  H05K1/18 ,  H05K3/341 ,  H05K3/40 ,  H01F1/22 ,  H05K2201/09009 ,  H05K2201/10007

摘要： An electrode structure on a circuit board, the electrode structure comprising a metal structure disposed on and electrically connected to the circuit board, wherein the metal structure and a surface of the circuit board forms a space therebetween, wherein at least one first electrical component is disposed in the space and an outer surface of the metal structure forms an electrode for electrically connecting with an external component.

公开(公告)号：US20230081183A1

公开(公告)日：2023-03-16

申请号：US17983270

申请日：2022-11-08

申请人： Alps Electric Co., Ltd.

发明人： Kinshiro TAKADATE ,  Hisato KOSHIBA ,  Shokan YAMASHITA

IPC分类号： B22F1/052 ,  C22C45/02 ,  H01F3/08 ,  H01F1/153 ,  B22F3/02 ,  H01F41/02 ,  H01F1/26 ,  B22F1/102 ,  B22F1/08 ,  B22F1/00 ,  B22F3/00 ,  H01F1/22 ,  H01F17/06

摘要： A dust core contains a powder of a crystalline magnetic material powder and a powder of an amorphous magnetic material. The sum of the content of the crystalline magnetic material powder and the content of the amorphous magnetic material powder is 83 mass percent or more. The mass ratio of the content of the crystalline magnetic material powder to the sum of the content of the crystalline magnetic material powder and the content of the amorphous magnetic material powder is 20 mass percent or less. The median diameter D50a of the amorphous magnetic material powder is greater than or equal to the median diameter D50c of the crystalline magnetic material powder. A 10% cumulative diameter D10a in a volume-based cumulative particle size distribution of the amorphous magnetic material powder is 9.5 μm or less.

公开(公告)号：US11587704B2

公开(公告)日：2023-02-21

申请号：US17209440

申请日：2021-03-23

申请人： TDK CORPORATION

发明人： Kazuhiro Yoshidome ,  Hiroyuki Matsumoto

IPC分类号： C22C45/02 ,  H01F1/153 ,  H01F1/26 ,  H01F3/08 ,  H01F1/24 ,  C22C45/00 ,  C22C38/08 ,  C22C38/02 ,  B32B5/30 ,  B32B5/16 ,  B32B5/02 ,  B32B5/18 ,  H01F1/12 ,  H01F1/20 ,  H01F1/06 ,  H01F1/14 ,  H01F1/147 ,  H01F1/22 ,  H01F27/255

摘要： To obtain a magnetic core having an improved withstand voltage property while maintaining a high relative magnetic permeability, and the like. The magnetic core contains large particles observed as soft magnetic particles having a Heywood diameter of 5 μm or more and 25 μm or less and small particles observed as soft magnetic particles having a Heywood diameter of 0.5 μm or more and less than 5 μm in a cross section. C1

公开(公告)号：US11459646B2

公开(公告)日：2022-10-04

申请号：US16648836

申请日：2018-09-20

申请人： National Institute of Advanced Industrial Science and Technology

发明人： Nobuyoshi Imaoka ,  Shinpei Yamamoto ,  Kimihiro Ozaki

IPC分类号： C22C38/16 ,  C22C38/10 ,  C22C38/08 ,  C22C38/04 ,  C22C38/02 ,  B22F1/00 ,  B22F9/22 ,  H01F1/34 ,  H01F1/36 ,  B22F1/05 ,  H01F1/055 ,  H01F1/22

摘要： The purpose of the present invention is to provide: a new magnetic material which exhibits high magnetic stability and excellent oxidation resistance and which can achieve both significantly higher saturation magnetization and lower coercive force than a conventional ferrite-based magnetic material by using a magnetic material obtained by nanodispersing α-(Fe,M) phases and M component-enriched phases (here, the M component is at least one component selected from among Zr, Hf, V, Nb, Ta, Cr, Mo, W, Cu, Zn and Si); and a method for producing same. This magnetic material powder exhibits high moldability, and is such that α-(Fe, M) phases and M-enriched phases are nanodispersed by chemically reducing M-ferrite nanoparticles, which are obtained by means of wet synthesis, in hydrogen and utilizing phase separation by means of a disproportionation reaction while simultaneously carrying out grain growth. Furthermore, a solid magnetic material is obtained by sintering this powder.

公开(公告)号：US20220285089A1

公开(公告)日：2022-09-08

申请号：US17682380

申请日：2022-02-28

申请人： TOKIN CORPORATION

发明人： Tadashi OMIYA ,  Masakazu ABE

IPC分类号： H01F27/36 ,  H01F1/16 ,  H01F1/22 ,  H01F1/28

摘要： A magnetic sheet is used as a noise reduction member for a cable. The magnetic sheet has a width of 5 mm to 15 mm. The magnetic sheet has a magnetic layer and a protective layer. The magnetic layer comprises soft-magnetic particles and a binder. Each of the soft-magnetic particles has a flat shape. A content of the soft-magnetic particles in the magnetic layer is from 35 vol % to 40 vol % with respect to the overall volume of the magnetic layer. The binder is made of polyacrylic rubber or of mixture of polyacrylic rubber and nitrile rubber. The binder binds the soft-magnetic particles to each other. A content of the binder in the magnetic layer is from 35 vol % to 65 vol % with respect to the overall volume of the magnetic layer. The protective layer reinforces the magnetic layer.

公开(公告)号：US11239714B2

公开(公告)日：2022-02-01

申请号：US16866756

申请日：2020-05-05

申请人： TDK Corporation

发明人： Nobuyuki Shimbo ,  Koji Mitake ,  Toshihiro Kuroshima

IPC分类号： H02K1/27 ,  H02K15/03 ,  H01F13/00 ,  H01F1/22 ,  H02K21/14

摘要： In an IPM motor, since a first portion which is a pressed powder compact made of soft magnetic powder and has a lower magnetic permeability and a lower saturation magnetic flux density than those of a main body portion made of a laminated steel sheet is replaced and disposed in the vicinity of an inner arc side portion of a right end portion of a permanent magnet, local demagnetization is prevented.

公开(公告)号：US20210249167A1

公开(公告)日：2021-08-12

申请号：US17256759

申请日：2019-06-18

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD. ,  SUMITOMO ELECTRIC SINTERED ALLOY, LTD.

发明人： Tatsuya SAITO ,  Hijiri TSURUTA ,  Tomoyuki UENO

IPC分类号： H01F1/22 ,  B22F3/24

摘要： A method for manufacturing a powder magnetic core, including a step of compacting a raw material powder to form a compact, a step of performing a first heat treatment on the compact to obtain a first heat-treated body, and a step of performing a second heat treatment on the first heat-treated body to obtain a second heat-treated body, wherein the raw material powder contains a soft magnetic powder and a lubricant that has a melting point Tm, the first heat treatment is performed in a temperature range from Tm to Tm+50° C. inclusive for a time longer than 10 minutes, and the second heat treatment is performed in a temperature range from 400° C. to 900° C. inclusive for a time of 3 minutes to 90 minutes inclusive, the temperature range of the second heat treatment being higher than the temperature range of the first heat treatment.

公开(公告)号：US10758982B2

公开(公告)日：2020-09-01

申请号：US15661583

申请日：2017-07-27

申请人： Murata Manufacturing Co., Ltd. ,  Tohoku Magnet Institute Co., Ltd.

发明人： Toru Takahashi ,  Akihiro Makino ,  Noriharu Yodoshi

IPC分类号： C22C38/02 ,  C22C45/02 ,  B22F9/08 ,  H02K1/02 ,  B22F3/00 ,  C22C38/00 ,  H01F1/14 ,  H01F1/22 ,  B22F1/00 ,  B22F3/02 ,  B22F3/24 ,  C22C38/16 ,  H01F3/08 ,  H01F41/02

摘要： A magnetic powder is represented by general formula FeaSibBcPdCue. 71.0≤a≤81.0, 0.14≤b/c≤5, 0≤d≤14, 0

公开(公告)号：US10607757B1

公开(公告)日：2020-03-31

申请号：US15639001

申请日：2017-06-30

申请人： TDK CORPORATION

发明人： Yu Sakurai ,  Tomofumi Kuroda ,  Hideyuki Itoh

IPC分类号： H01F1/22 ,  H01F41/02 ,  B22F1/00 ,  C23C8/24

摘要： The present invention is a method of producing a soft magnetic metal powder comprising, a material powder preparation step of preparing a material powder comprising a particle including a boron and a soft magnetic metal including an iron, a first nitriding step of nitriding the boron included in said particle by carrying out a heat treatment to said material powder under a non-oxidizing atmosphere including nitrogen, and a spheroidizing step of spheroidizing said particle by carrying out a heat treatment to said material powder of after said first nitriding step under a non-oxidizing atmosphere having lower nitrogen partial pressure than a nitrogen partial pressure of the non-oxidizing atmosphere during said first nitriding step. According to the present invention, the soft magnetic metal powder comprising the particle having a shape of a complete sphere or close to complete sphere, and comprising the small standard deviation of the particle size distribution of the powder can be obtained.

公开(公告)号：US20190355503A1

公开(公告)日：2019-11-21

申请号：US16430816

申请日：2019-06-04

申请人： HITACHI METALS, LTD.

发明人： Kazunori NISHIMURA ,  Shin Noguchi ,  Toshio Mihara

IPC分类号： H01F27/255 ,  H01F1/26 ,  H01F41/02 ,  C22C38/00 ,  H01F1/147 ,  H01F1/22

摘要： The invention provides a powder magnetic core and a method for manufacturing a powder magnetic core through simple compression molding and capable of manufacturing a complicatedly shaped powder magnetic core with reliable high strength and insulating properties. A method for manufacturing a powder magnetic core with a metallic soft magnetic material powder includes: a first step including mixing a soft magnetic material powder and a binder; a second step including compression molding the mixture obtained after the first step; a third step including performing at least one of grinding and cutting on the compact obtained after the second step; and a fourth step including heat-treating the compact after the third step, wherein in the fourth step, the compact is heat-treated so that an oxide layer containing an element constituting the soft magnetic material powder is formed on the surface of the soft magnetic material powder.