公开(公告)号：US12006560B2

公开(公告)日：2024-06-11

申请号：US18174649

申请日：2023-02-27

Applicant: JFE STEEL CORPORATION

Inventor： Naoki Yamamoto ,  Takuya Takashita ,  Makoto Nakaseko ,  Akio Kobayashi ,  Akiri Urata ,  Miho Chiba

IPC: H01F1/22 ,  B22F1/00 ,  B22F1/052 ,  B22F1/07 ,  B22F1/08 ,  B22F9/00 ,  C22C38/02 ,  C22C45/02 ,  H01F1/153 ,  H01F3/08 ,  H01F27/255

CPC classification number: C22C38/02 ,  B22F1/052 ,  B22F1/07 ,  B22F1/08 ,  B22F9/002 ,  C22C45/02 ,  H01F1/15308 ,  H01F1/15333 ,  H01F1/22 ,  H01F3/08 ,  H01F27/255 ,  B22F2998/10 ,  C22C2200/02 ,  C22C2202/02 ,  B22F2998/10 ,  B22F9/002 ,  B22F1/08 ,  B22F1/10 ,  B22F3/02 ,  B22F2003/248

Abstract: Provided is an Fe-based nanocrystalline alloy powder. The Fe-based nanocrystalline alloy powder has a chemical composition, excluding inevitable impurities, represented by a composition formula of FeaSibBcPdCueMf, where the M in the composition formula is at least one element selected from the group consisting of Nb, Mo, Zr, Ta, W, Hf, Ti, V, Cr, Mn, C, Al, S, O, and N, 79 at %≤a≤84.5 at %, 0 at %≤b

公开(公告)号：US11814707B2

公开(公告)日：2023-11-14

申请号：US16481449

申请日：2018-01-26

Applicant: TOKIN CORPORATION ,  JFE STEEL CORPORATION

Inventor： Akiri Urata ,  Miho Chiba ,  Mineo Muraki ,  Makoto Nakaseko ,  Takuya Takashita

IPC: C22C38/00 ,  C22C33/02 ,  C22C38/02 ,  C22C38/06 ,  C22C38/14 ,  C22C38/16 ,  C22C45/02 ,  H01F1/147 ,  B22F1/08 ,  H01F1/153

CPC classification number: C22C38/005 ,  B22F1/08 ,  C22C33/0257 ,  C22C38/02 ,  C22C38/06 ,  C22C38/14 ,  C22C38/16 ,  C22C45/02 ,  H01F1/14791 ,  C22C2200/02 ,  C22C2200/04 ,  C22C2202/02 ,  H01F1/15333 ,  B22F2998/10 ,  B22F9/082 ,  B22F1/08 ,  B22F2003/248 ,  B22F1/148 ,  B22F3/02

Abstract: This soft magnetic powder is represented by composition formula FeaSibBcPdCue with the exception of unavoidable impurities. In the composition formula, a, b, c, d and e satisfy 79≤a≤84.5 at %, 0≤b

公开(公告)号：US11600414B2

公开(公告)日：2023-03-07

申请号：US17262204

申请日：2019-07-25

Applicant: JFE STEEL CORPORATION

Inventor： Naoki Yamamoto ,  Takuya Takashita ,  Makoto Nakaseko ,  Akio Kobayashi ,  Akiri Urata ,  Miho Chiba

IPC: H01F1/22 ,  C22C45/02 ,  H01F1/153 ,  B22F9/24 ,  B22F9/00 ,  H01F3/08 ,  H01F27/255 ,  B22F1/07

Abstract: Provided is a soft magnetic powder that can produce a dust core having excellent magnetic properties. The soft magnetic powder has a chemical composition, excluding inevitable impurities, represented by a composition formula of FeaSibBcPdCueMf, where the M is at least one element selected from the group consisting of Nb, Mo, Zr, Ta, W, Hf, Ti, V, Cr, Mn, C, Al, S, O, and N, 79 at %≤a≤84.5 at %, 0 at %≤b