公开(公告)号：US20150213942A1

公开(公告)日：2015-07-30

申请号：US14602821

申请日：2015-01-22

Applicant: TDK CORPORATION

Inventor： Tomofumi KURODA ,  Yu SAKURAI ,  Hideyuki ITOH

IPC: H01F27/255 ,  H01F27/34

CPC classification number: H01F27/255 ,  H01F3/10 ,  H01F3/14 ,  H01F27/34 ,  H01F37/00 ,  H01F2003/106

Abstract: A reactor using a composite magnetic core in which a ferrite core and a soft magnetic metal core are combined The reactor is composed of a pair of yoke portion magnetic portions composed of ferrite, winding portion core(s) disposed between the opposite planes of the yoke portion cores, and coil(s) winding around the winding portion core(s). The winding portion core(s) is/are formed using a soft magnetic metal core with a substantially constant cross sectional area. Junction portion cores composed of soft magnetic metal powder cores with a tubular shape are disposed at the spaces where the winding portion core(s) face(s) the yoke portion cores, and the area of the part where the junction portion core faces the yoke portion core is made to be 1.3 to 4.0 times that of the section of the winding portion core.

Abstract translation: 一种使用铁氧体磁芯和软磁金属芯组合的复合磁芯的电抗器，由铁氧体构成的一对磁轭部磁性部分，设置在磁轭的相对平面之间的绕组部分磁芯构成 部分芯部和缠绕在绕组部分芯上的线圈。 绕组部分芯使用具有基本恒定横截面积的软磁金属芯形成。 由管状芯的软磁性金属粉末芯构成的接合部芯配置在绕组部分芯部与磁轭部磁芯相对的空间以及接合部分芯面向磁轭的部分的面积 部分芯部的长度为卷绕部分芯部的1.3〜4.0倍。

公开(公告)号：US20220336140A1

公开(公告)日：2022-10-20

申请号：US17717673

申请日：2022-04-11

Applicant: TDK CORPORATION

Inventor： Yu SAKURAI ,  Takashi SUZUKI ,  Hideyuki ITOH ,  Kouichi KAKUDA ,  Ryuichi WADA ,  Nami ENOMOTO ,  Yusuke NAGAI ,  Kunihiko KAWASAKI ,  Shinichi KONDO ,  Yuya ISHIMA

IPC: H01F27/28 ,  H01F1/147 ,  H01F1/20

Abstract: A coil-type electronic component comprises an element including a magnetic element body and a coil conductor. A portion of the magnetic element body in between layers of the coil conductor adjacent to each other in an axis direction of the coil conductor includes first soft magnetic metal particles. A portion of the magnetic element body on an outer side along the axis includes second soft magnetic metal particles. The first soft magnetic metal particles have a saturation magnetization (Ms) higher than that of the second soft magnetic metal particles.

公开(公告)号：US20190148044A1

公开(公告)日：2019-05-16

申请号：US16189725

申请日：2018-11-13

Applicant: TDK CORPORATION

Inventor： Tomofumi KURODA ,  Yu SAKURAI ,  Tomohisa MITOSE

IPC: H01F1/147 ,  H01F3/08 ,  H01F41/02 ,  C22C38/02

Abstract: A method for producing soft magnetic metal powder includes: a raw material powder preparing step of preparing metal raw material powder having metal raw material particles including iron, silicon, and boron; a mixture step of mixing the metal raw material powder and a carbon source substance and obtaining mixed powder; and a heat treatment step of performing heat treatment on the mixed powder in a non-oxidizing atmosphere containing nitrogen at a heat treatment temperature of 1,250° C. or higher and making the metal raw material particles spherical.

公开(公告)号：US20150332821A1

公开(公告)日：2015-11-19

申请号：US14712313

申请日：2015-05-14

Applicant: TDK CORPORATION

Inventor： Yu SAKURAI ,  Tomofumi KURODA ,  Hideyuki ITOH

IPC: H01F1/147 ,  H01F1/24 ,  C22C30/00 ,  C22C38/00 ,  C22C19/03 ,  H01F1/20 ,  C22C38/08

CPC classification number: H01F1/1475 ,  B22F1/0048 ,  B22F1/0085 ,  B22F1/02 ,  B22F2998/10 ,  B22F2999/00 ,  C22C19/03 ,  C22C30/00 ,  C22C38/002 ,  C22C38/08 ,  H01F1/14733 ,  H01F1/20 ,  H01F1/24 ,  H01F3/08 ,  H01F41/0246 ,  B22F1/0081 ,  B22F1/0088 ,  B22F2201/02 ,  B22F9/08 ,  B22F9/04 ,  B22F2009/043 ,  B22F1/0062 ,  B22F2003/145

Abstract: The present invention relates to a soft magnetic metal powder which contains B and has Fe and Ni as the main components, wherein the content of Ni in the soft magnetic metal powder is 30 to 80 mass %, the total content of Fe and Ni in the soft magnetic metal powder is 90 mass % or more, the content of B inside the metal particle of the soft magnetic metal powder is 10 to 150 ppm, and the particle has a film of boron nitride on the surface. The present invention also relates to a soft magnetic metal powder core prepared by using the soft magnetic metal powder.

Abstract translation: 本发明涉及含有B并以Fe和Ni为主要成分的软磁性金属粉末，其中软磁性金属粉末中的Ni含量为30〜80质量％，Fe和Ni的总含量 软磁性金属粉末为90质量％以上时，软磁性金属粉末的金属粒子内的B含量为10〜150ppm，表面形成有氮化硼膜。 本发明还涉及通过使用软磁性金属粉末制备的软磁性金属粉末芯。

公开(公告)号：US20150213941A1

公开(公告)日：2015-07-30

申请号：US14603051

申请日：2015-01-22

Applicant: TDK Corporation

Inventor： Tomofumi KURODA ,  Yu SAKURAI ,  Hideyuki ITOH

IPC: H01F27/24 ,  H01F27/34

CPC classification number: H01F27/24 ,  H01F3/10 ,  H01F3/14 ,  H01F27/34 ,  H01F37/00 ,  H01F2003/106

Abstract: A reactor using a composite magnetic core in which a ferrite core and a soft magnetic metal core are combined. The reactor is composed of a pair of yoke portion magnetic portions composed of a ferrite core, winding portion core(s) disposed between the opposite planes of the yoke portion cores, and coil(s) wound around the winding portion core(s). The winding portion core(s) is/are made of a soft magnetic metal core, and the cross sectional area of the part for winding the coil of the winding portion core is substantially constant. When the cross sectional area of the part for winding the coil of the winding portion core is set as S1, and the area of the parts opposite to the yoke portion cores in the winding portion core(s) is set as S2, the area ratio S2/S1 is set to be 1.3 to 4.0.

Abstract translation: 使用其中组合有铁氧体磁芯和软磁金属芯的复合磁芯的电抗器。 电抗器由一对轭铁部分磁性部分组成，该部分由铁氧体磁芯，设置在轭铁芯的相对平面之间的绕组部分磁芯和卷绕在绕组部分磁芯上的线圈组成。 绕组部分芯由软磁金属芯构成，用于缠绕绕组部分芯的线圈的部分的横截面积基本上恒定。 当绕组部分芯部的线圈的卷绕部分的横截面面积被设定为S1，并且将绕线部分芯部中与磁轭部分芯相对的部分的面积设定为S2时，面积比 S2 / S1设定为1.3〜4.0。

公开(公告)号：US20220336128A1

公开(公告)日：2022-10-20

申请号：US17760951

申请日：2020-09-25

Applicant: TDK CORPORATION

Inventor： Takashi SUZUKI ,  Yu SAKURAI ,  Hideyuki ITOH ,  Kouichi KAKUDA ,  Ryuichi WADA ,  Nami ENOMOTO ,  Yusuke NAGAI ,  Kunihiko KAWASAKI ,  Shinichi KONDO ,  Yuya ISHIMA

IPC: H01F1/147 ,  C22C30/00 ,  B22F1/05 ,  B22F1/16

Abstract: A soft magnetic metal powder or the like from which a soft magnetic metal fired body can be provided has a high magnetic permeability μ and a specific resistance ρ and is contained in a coil-type electronic component having sufficiently high inductance L and Q value and unlikely to be plating-extended and short-circuited. A soft magnetic metal powder contains soft magnetic metal particles containing at least Fe and Ni. Said soft magnetic metal powder further contains P, Si, Cr and/or M. M is at least one selected from among B, Co, Mn, Ti, Zr, Hf, Nb, Ta, Mo, Mg, Ca, Sr, Ba, Zn, Al, and rare earth elements. The content of each element is within a predetermined range.

公开(公告)号：US20150332824A1

公开(公告)日：2015-11-19

申请号：US14712326

申请日：2015-05-14

Applicant: TDK CORPORATION

Inventor： Yu SAKURAI ,  Tomofumi KURODA ,  Hideyuki ITOH

IPC: H01F1/24 ,  C22C38/00 ,  C22C38/02 ,  H01F1/147 ,  H01F1/20

CPC classification number: H01F1/20 ,  B22F2998/10 ,  B22F2999/00 ,  C22C33/0257 ,  C22C38/00 ,  C22C38/002 ,  C22C38/02 ,  H01F1/14766 ,  H01F1/24 ,  H01F41/0246 ,  B22F9/08 ,  B22F1/0085 ,  B22F1/0088 ,  B22F2003/145 ,  B22F2201/02

Abstract: The present invention relates to a soft magnetic metal powder which has Fe as the main component and contains Si and B, wherein, the content of Si in the soft magnetic metal powder is 1 to 15 mass %, the content of boron inside the metal particle of the soft magnetic metal powder is 10 to 150 ppm, and the particle has a film of boron nitride on the surface. The present invention also relates to a soft magnetic metal powder core prepared by using the soft magnetic metal powder.

Abstract translation: 本发明涉及以Fe为主成分含有Si和B的软磁性金属粉末，其中，软磁性金属粉末中的Si含量为1〜15质量％，金属粒子内的硼含量 的软磁性金属粉末为10〜150ppm，粒子表面具有氮化硼膜。 本发明还涉及通过使用软磁性金属粉末制备的软磁性金属粉末芯。

公开(公告)号：US20150213944A1

公开(公告)日：2015-07-30

申请号：US14604380

申请日：2015-01-23

Applicant: TDK CORPORATION

Inventor： Tomofumi KURODA ,  Yu SAKURAI

IPC: H01F27/26 ,  H01F27/34 ,  H01F27/255

CPC classification number: H01F27/263 ,  H01F3/10 ,  H01F3/14 ,  H01F27/255 ,  H01F27/34 ,  H01F27/346 ,  H01F37/00 ,  H01F2003/106

Abstract: A reactor uses a composite magnetic core which combines a ferrite core and a soft magnetic metal core. The reactor is composed of a pair of yoke portion cores composed of ferrite cores, winding portion core(s) disposed between the opposite planes of the yoke portion cores, and coil(s) wound around the winding portion core(s). Flange-like members are disposed at the end part of the winding portion core(s) in a way of being external connected with the periphery of winding portion core(s) which is composed of a soft magnetic metal core. The flange-like member is composed of a metal material with iron as the main component which can be magnetically attracted to a magnet, and a junction portion of the flange-like member and the yoke portion core is formed at one flat plane of the member which is the same plane with an end plane of the winding portion core.

Abstract translation: 反应器使用组合铁氧体磁芯和软磁金属芯的复合磁芯。 反应器由铁氧体磁心构成的一对轭铁芯，配置在轭铁芯的相对面之间的绕组部分铁芯和卷绕在绕组部分铁芯上的线圈构成。 法兰状构件以与软磁金属芯构成的绕线部分芯的周边外部连接的方式设置在绕组部分芯的端部。 凸缘状部件由以铁为主要成分的金属材料构成，该金属材料可被磁性吸引到磁体上，并且凸缘状部件和磁轭部分芯部的接合部分形成在该部件的一个平面处 其是与卷绕部分芯的端面相同的平面。

公开(公告)号：US20240304366A1

公开(公告)日：2024-09-12

申请号：US18594115

申请日：2024-03-04

Applicant: TDK Corporation

Inventor： Ryoma NAKAZAWA ,  Ryuichi WADA ,  Yu SAKURAI

IPC: H01F1/24 ,  H01F1/147

CPC classification number: H01F1/24 ,  H01F1/14766

Abstract: A soft magnetic metal particle may include a core particle and an insulating film over a surface of the core particle. The insulating film may include a complex oxide containing Si and B. B may constitute 1.0 mol % or more and 60.0 mol % or less of a total of Si and B in the insulating film.

公开(公告)号：US20230298787A1

公开(公告)日：2023-09-21

申请号：US18185101

申请日：2023-03-16

Applicant: TDK CORPORATION

Inventor： Yu SAKURAI ,  Hidenobu Umeda ,  Hideyuki Itoh ,  Ryuichi Wada ,  Kouichi Kakuda

IPC: H01F1/147

CPC classification number: H01F1/14733 ,  H01F27/28

Abstract: A soft magnetic metal particle comprises an Fe—Ni based soft magnetic metal. The soft magnetic metal particle includes both an fcc phase and a bcc phase. A magnetic element body includes the soft magnetic metal particle. A coil-type electronic component includes the magnetic element body and a coil conductor.