公开(公告)号：US12049684B2

公开(公告)日：2024-07-30

申请号：US18196614

申请日：2023-05-12

Applicant: Dowa Electronics Materials Co., Ltd.

Inventor： Masahiro Yoshida ,  Kenichi Inoue ,  Atsushi Ebara ,  Yoshiyuki Michiaki ,  Takahiro Yamada

IPC: B22F1/10 ,  B22F1/05 ,  B22F9/08 ,  C22C1/04 ,  H01B1/22 ,  B22F1/00

CPC classification number: C22C1/0425 ,  B22F1/05 ,  B22F1/10 ,  B22F9/082 ,  H01B1/22 ,  B22F1/09 ,  B22F2009/0828 ,  B22F2009/0832 ,  B22F2009/086 ,  B22F2201/013 ,  B22F2201/02 ,  B22F2201/04 ,  B22F2201/11 ,  B22F2203/13 ,  B22F2301/10 ,  B22F2303/01 ,  B22F2304/10 ,  B22F2998/10 ,  B22F2999/00 ,  B22F1/10 ,  C22C1/0425 ,  B22F1/05

Abstract: There are provided an inexpensive copper powder, which has a low content of oxygen even it has a small particle diameter and which has a high shrinkage starting temperature when it is heated, and a method for producing the same. While a molten metal of copper heated to a temperature, which is higher than the melting point of copper by 250 to 700° C. (preferably 350 to 650° C. and more preferably 450 to 600° C.), is allowed to drop, a high-pressure water is sprayed onto the heated molten metal of copper in a non-oxidizing atmosphere (such as an atmosphere of nitrogen, argon, hydrogen or carbon monoxide) to rapidly cool and solidify the heated molten metal of copper to produce a copper powder which has an average particle diameter of 1 to 10 μm and a crystallite diameter Dx(200) of not less than 40 nm on (200) plane thereof, the content of oxygen in the copper powder being 0.7% by weight or less.

公开(公告)号：US20240110266A1

公开(公告)日：2024-04-04

申请号：US18477742

申请日：2023-09-29

Applicant: SEIKO EPSON CORPORATION

Inventor： Taku KAWASAKI ,  Isshin NARUMI

IPC: C22C38/48 ,  B22F1/00 ,  B22F3/10 ,  B22F3/22 ,  B22F9/08 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/20 ,  C22C38/22 ,  C22C38/26 ,  C22C38/42 ,  C22C38/44

CPC classification number: C22C38/48 ,  B22F1/00 ,  B22F3/1021 ,  B22F3/225 ,  B22F9/082 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/20 ,  C22C38/22 ,  C22C38/26 ,  C22C38/42 ,  C22C38/44 ,  B22F2009/0828 ,  B22F2201/02 ,  B22F2201/11 ,  B22F2301/35 ,  B22F2998/10 ,  B22F2999/00

Abstract: A sintering metal powder to be used in sintering contains: a composition of ferritic stainless steel; C having a content of 0.05 mass % or more and 1.00 mass % or less; Nb having a content of 0.05 mass % or more and 1.50 mass % or less; and impurities. In addition, C/Nb may be 0.10 or more and 1.80 or less, where C/Nb is a ratio of the content of C to the content of Nb.

公开(公告)号：US20230395292A1

公开(公告)日：2023-12-07

申请号：US18249216

申请日：2021-10-20

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO., LTD

Inventor： Meng Fang ,  Yangzhong Du ,  Junwei Lu ,  Haifei Lou ,  Linke Wang ,  Yuchao Du

IPC: H01F1/153 ,  C22C45/00 ,  B22F1/065 ,  B22F9/08 ,  C22C33/06 ,  B22F1/102 ,  B22F1/16 ,  B22F1/145 ,  B22F3/10 ,  C22C38/54 ,  C22C38/46 ,  C22C38/42 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  B22F3/24 ,  B22F5/10

CPC classification number: H01F1/15341 ,  B22F2003/248 ,  B22F1/065 ,  B22F9/082 ,  C22C33/06 ,  B22F1/102 ,  B22F1/16 ,  B22F1/145 ,  B22F3/1007 ,  C22C38/54 ,  C22C38/46 ,  C22C38/42 ,  C22C38/04 ,  C22C38/02 ,  C22C38/002 ,  B22F3/24 ,  B22F5/106 ,  C22C2200/02 ,  B22F2999/00 ,  B22F2301/35 ,  B22F2304/10 ,  B22F2998/10 ,  B22F2009/0828 ,  B22F2302/45 ,  B22F2302/256 ,  C22C2202/02 ,  C22C45/008

Abstract: The present application provides an iron-based amorphous alloy powder, a preparation method therefor and an application thereof. The iron-based amorphous alloy powder comprises a Cu element, and the particle shape of the iron-based amorphous alloy powder is spherical. The preparation method comprises the following steps: (1) smelting a master alloy to obtain iron-based amorphous alloy molten iron, the master alloy comprising a Cu element; and (2) treating the iron-based amorphous alloy molten iron obtained in step (1) by means of water-gas combined atomization to obtain the iron-based amorphous alloy powder.

公开(公告)号：US20230279523A1

公开(公告)日：2023-09-07

申请号：US18196614

申请日：2023-05-12

Applicant: Dowa Electronics Materials Co., Ltd.

Inventor： Masahiro Yoshida ,  Kenichi Inoue ,  Atsushi Ebara ,  Yoshiyuki Michiaki ,  Takahiro Yamada

IPC: C22C1/04 ,  B22F9/08 ,  H01B1/22 ,  B22F1/10 ,  B22F1/05

CPC classification number: C22C1/0425 ,  B22F9/082 ,  H01B1/22 ,  B22F1/10 ,  B22F1/05 ,  B22F2009/0828 ,  B22F2009/0832 ,  B22F2009/086 ,  B22F2201/013 ,  B22F2201/02 ,  B22F2201/04 ,  B22F2201/11 ,  B22F2203/13 ,  B22F2301/10 ,  B22F2303/01 ,  B22F2304/10 ,  B22F2998/10 ,  B22F1/09

Abstract: There are provided an inexpensive copper powder, which has a low content of oxygen even it has a small particle diameter and which has a high shrinkage starting temperature when it is heated, and a method for producing the same. While a molten metal of copper heated to a temperature, which is higher than the melting point of copper by 250 to 700° C. (preferably 350 to 650° C. and more preferably 450 to 600° C.), is allowed to drop, a high-pressure water is sprayed onto the heated molten metal of copper in a non-oxidizing atmosphere (such as an atmosphere of nitrogen, argon, hydrogen or carbon monoxide) to rapidly cool and solidify the heated molten metal of copper to produce a copper powder which has an average particle diameter of 1 to 10 μm and a crystallite diameter Dx(200) of not less than 40 nm on (200) plane thereof, the content of oxygen in the copper powder being 0.7% by weight or less.

公开(公告)号：US11692241B2

公开(公告)日：2023-07-04

申请号：US16473353

申请日：2017-12-21

Applicant: Dowa Electronics Materials Co., Ltd.

Inventor： Masahiro Yoshida ,  Kenichi Inoue ,  Atsushi Ebara ,  Yoshiyuki Michiaki ,  Takahiro Yamada

IPC: H01B1/22 ,  B22F1/10 ,  B22F9/08

CPC classification number: B22F9/082 ,  B22F1/10 ,  H01B1/22 ,  B22F2009/086 ,  B22F2009/0828 ,  B22F2009/0832 ,  B22F2201/013 ,  B22F2201/02 ,  B22F2201/04 ,  B22F2201/11 ,  B22F2203/13 ,  B22F2301/10 ,  B22F2303/01 ,  B22F2304/10 ,  B22F2998/10

Abstract: While a molten metal of copper heated to a temperature, which is higher than the melting point of copper by 250 to 700° C. (preferably 350 to 650° C. and more preferably 450 to 600° C.), is allowed to drop, a high-pressure water is sprayed onto the heated molten metal of copper in a non-oxidizing atmosphere (such as an atmosphere of nitrogen, argon, hydrogen or carbon monoxide) to rapidly cool and solidify the heated molten metal of copper to produce a copper powder which has an average particle diameter of 1 to 10 μm and a crystallite diameter Dx(200) of not less than 40 nm on (200) plane thereof, the content of oxygen in the copper powder being 0.7% by weight or less.

公开(公告)号：US11685980B2

公开(公告)日：2023-06-27

申请号：US17211775

申请日：2021-03-24

Applicant: Shenzhen Sunlord Electronics Co., Ltd.

Inventor： Xinshu Yu ,  Shengcheng Xia ,  Youyun Li ,  Xin Che

IPC: C22C38/34 ,  B22F9/08 ,  H01F1/01 ,  H01F1/26 ,  H01F41/02 ,  B22F1/102 ,  H01F3/08 ,  B22F1/10 ,  C22C1/10

CPC classification number: C22C38/34 ,  B22F1/102 ,  B22F1/108 ,  B22F9/082 ,  C22C1/1084 ,  H01F1/015 ,  H01F1/26 ,  H01F3/08 ,  H01F41/0246 ,  B22F2009/0828 ,  B22F2301/35 ,  B22F2304/10 ,  B22F2998/10 ,  B22F1/052 ,  B22F9/04 ,  B22F3/02

Abstract: A preparation method for a metal soft magnetic composite material inductor includes: smelting Fe, Si and Cr and then employing a water atomization or gas atomization means to fabricate an alloy powder; after sifting by particle size, mixing powders of different particle size levels and performing coating insulation, and performing post-granulation to obtain a metal soft composite material granulation powder; adopting the granulation powder to press a material cake, and transferring and molding same; adopting a hollow coil in a liquid-phase coating mold cavity, curing and demolding to obtain a semi-finished product, then continuously heating and curing the semi-finished product, and preparing an end electrode to obtain a finished inductor.

公开(公告)号：US20180221962A1

公开(公告)日：2018-08-09

申请号：US15944385

申请日：2018-04-03

Applicant: Kennametal Inc.

Inventor： Pantcho Stoyanov

IPC: B23B27/14 ,  C22C29/08 ,  C22C29/06 ,  B22F3/00 ,  B22F3/105 ,  B22F3/15 ,  B23B27/10 ,  B23B51/02 ,  B23C5/20 ,  C22C1/05 ,  B22F9/08 ,  B22F5/00

CPC classification number: B23B27/14 ,  B22F3/008 ,  B22F3/1055 ,  B22F3/15 ,  B22F9/08 ,  B22F2005/001 ,  B22F2301/15 ,  B22F2302/10 ,  B22F2998/10 ,  B23B27/10 ,  B23B51/02 ,  B23B2222/28 ,  B23B2228/10 ,  B23C5/20 ,  B23C2228/25 ,  C22C1/051 ,  C22C29/067 ,  C22C29/08 ,  Y02P10/295 ,  B22F2009/0828

Abstract: A cutting tool made by an additive manufacturing process is disclosed. The cutting tool has an exterior surface and an enclosed interior cavity defined by one or more inwardly facing surfaces. The interior cavity may have internal supports such as a lattice or a honeycomb structure. The cutting tool may be an insert, drill or endmill with coolant holes.

公开(公告)号：US20180108465A1

公开(公告)日：2018-04-19

申请号：US15844929

申请日：2017-12-18

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Toru TAKAHASHI

IPC: H01F1/147 ,  B22F9/08 ,  B22F1/00 ,  B22F9/00 ,  C22C45/02 ,  C22C38/32 ,  C22C38/02 ,  C22C38/00 ,  H01F41/02 ,  H01F27/255 ,  H01F27/28

CPC classification number: H01F1/14766 ,  B22F1/0007 ,  B22F1/0044 ,  B22F1/0059 ,  B22F9/008 ,  B22F9/082 ,  B22F2009/0824 ,  B22F2009/0828 ,  B22F2301/35 ,  B22F2304/10 ,  B22F2998/10 ,  B22F2999/00 ,  C22C33/0278 ,  C22C38/00 ,  C22C38/002 ,  C22C38/02 ,  C22C38/32 ,  C22C45/02 ,  C22C2202/02 ,  H01F1/15333 ,  H01F1/15375 ,  H01F27/255 ,  H01F27/28 ,  H01F41/02 ,  H01F41/0246 ,  B22F2201/10 ,  B22F3/02 ,  B22F3/10 ,  B22F2003/248

Abstract: A magnetic powder contains at least the first alloy powder and the second alloy powder in which those composition are different. The second alloy powder has a smaller median diameter than the first alloy powder and contains Cr of 0.3-14 at %. The first alloy powder has a Cr content of 0.3 at % or less. With respect to the total sum of the first alloy powder and the second alloy powder, a content of the second alloy powder is 20-50 vol % and the ratio of the median diameter of the first alloy powder to the second alloy powder is 4-20. The first alloy powder comprises either an amorphous phase or a crystalline phase having an average crystallite size of 50 nm or smaller. Thereby, a magnetic powder having low magnetic loss and good corrosion resistance without damaging insulation resistance and saturation magnetic flux density can be realized.

公开(公告)号：US20160336104A1

公开(公告)日：2016-11-17

申请号：US15111202

申请日：2015-01-14

Applicant: Hitachi Metals, Ltd.

Inventor： Shin NOGUCHI ,  Kazunori NISHIMURA ,  Toshio MIHARA

IPC: H01F27/255 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  H01F27/28 ,  B22F9/08 ,  B22F1/00 ,  B22F9/04 ,  B22F3/24 ,  B22F3/04 ,  B22F3/03 ,  C22C38/18 ,  C22C38/00

CPC classification number: H01F27/255 ,  B22F1/00 ,  B22F1/0014 ,  B22F1/0062 ,  B22F1/02 ,  B22F3/03 ,  B22F3/04 ,  B22F3/14 ,  B22F3/24 ,  B22F9/04 ,  B22F9/082 ,  B22F2003/248 ,  B22F2009/0828 ,  B22F2998/10 ,  B22F2999/00 ,  C22C33/02 ,  C22C33/0257 ,  C22C33/0264 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/18 ,  C22C45/02 ,  H01F1/24 ,  H01F1/33 ,  H01F27/28 ,  H01F27/2823 ,  H01F41/0246 ,  B22F3/02 ,  B22F5/10 ,  B22F2207/07 ,  C22C2202/02 ,  B22F1/0059 ,  B22F1/0096 ,  B22F2003/023 ,  B22F2009/0824

Abstract: A magnetic core has a structure in which Fe-based soft magnetic alloy particles are connected via a grain boundary. The Fe-based soft magnetic alloy particles contain Al, Cr and Si. An oxide layer containing at least Fe, Al, Cr and Si is formed at the grain boundary that connects the neighboring Fe-based soft magnetic alloy particles. The oxide layer contains an amount of Al larger than that in Fe-based soft magnetic alloy particles, and includes a first region in which the ratio of Al is higher than the ratio of each of Fe, Cr and Si to the sum of Fe, Cr, Al and Si, and a second region in which the ratio of Fe is higher than the ratio of each of Al, Cr and Si to the sum of Fe, Cr, Al and Si. The first region is on the Fe-based soft magnetic alloy particle side.

Abstract translation: 磁芯具有通过晶界连接铁基软磁性合金粒子的结构。 Fe系软磁合金粒子含有Al，Cr，Si。 在连接相邻的Fe基软磁性合金粒子的晶界处形成至少含有Fe，Al，Cr和Si的氧化物层。 氧化物层含有比Fe系软磁合金粒子大的Al量的Al，其中Al的比例高于Fe，Cr和Si中的每一个与Fe， Cr，Al和Si，以及Fe的比例高于Al，Cr和Si中的每一个与Fe，Cr，Al和Si的总和的比率的第二区域。 第一区域在Fe基软磁合金颗粒侧。

公开(公告)号：US20160303652A1

公开(公告)日：2016-10-20

申请号：US14442217

申请日：2013-12-02

Applicant: JEF STEEL CORPORATION

Inventor： Takuya TAKASHITA ,  Naomichi NAKAMURA

IPC: B22F1/00 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  H01F3/08 ,  B22F9/20 ,  C21D3/04 ,  C21D3/02 ,  C21D1/26 ,  H01F1/20 ,  C22C38/18 ,  B22F9/08

CPC classification number: B22F1/0062 ,  B22F1/0014 ,  B22F9/082 ,  B22F9/20 ,  B22F2009/0828 ,  B22F2301/35 ,  B22F2304/10 ,  B22F2998/10 ,  C21D1/26 ,  C21D3/02 ,  C21D3/04 ,  C22C33/02 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C2202/02 ,  H01F1/20 ,  H01F3/08

Abstract: The present invention provides iron powder for dust cores that has excellent compressibility and low iron loss after formation. In the iron powder for dust cores, Si content is 0.01 mass % or less, apparent density is 3.8 g/cm3 or more, the ratio of iron powder particles with a particle size of 45 μm or less is 10 mass % or less, the ratio of iron powder particles with a particle size of over 180 μm and 250 μm or less is less than 30 mass %, the ratio of iron powder particles with a particle size of over 250 μm is 10 mass % or less, and the Vickers hardness (test force: 0.245 N) of a powder cross-section is 80 Hv or less.

Abstract translation: 本发明提供了具有优异的压缩性和形成后的低铁损的防尘芯铁粉。 作为防尘芯铁粉末，Si含量为0.01质量％以下，表观密度为3.8g / cm 3以上，粒径为45μm以下的铁粉末的比例为10质量％以下， 粒径为180μm以上且250μm以下的铁粉粒子的比例小于30质量％，粒径超过250μm的铁粉粒子的比例为10质量％以下，维氏硬度 （试验力：0.245N）的粉末截面为80Hv以下。