公开(公告)号：US20210398720A1

公开(公告)日：2021-12-23

申请号：US17465000

申请日：2021-09-02

申请人： Seiko Epson Corporation

发明人： Yasuko KUDO ,  Mayu WATANABE ,  Hiroyoshi OTAKA

IPC分类号： H01F1/153 ,  H01F27/28 ,  H01F27/255 ,  C22C38/02 ,  C22C38/16 ,  C22C38/12 ,  C22C38/06 ,  C22C38/14 ,  C22C38/28 ,  H01F3/08 ,  B22F1/00 ,  C22C38/26 ,  C22C38/20 ,  C22C38/34 ,  C22C38/32 ,  C22C38/00

摘要： A soft magnetic powder has a composition represented by Fe100-a-b-c-d-e-f-g-hCuaSibBcMdM′eXfAlgTih (at %) (wherein M is at least one element selected from the group consisting of Nb and the like, M′ is at least one element selected from the group consisting of V and the like, X is at least one element selected from the group consisting of C and the like, and a, b, c, d, e, f, g, and h satisfy the following formulae: 0.1≤a≤3, 0

公开(公告)号：US20200258665A1

公开(公告)日：2020-08-13

申请号：US16858872

申请日：2020-04-27

申请人： Seiko Epson Corporation

发明人： Yasuko KUDO ,  Toshiki AKAZAWA ,  Yu MAEDA

IPC分类号： H01F1/147 ,  C22C33/02 ,  B22F9/08 ,  C22C33/00 ,  B22F9/00 ,  H01F1/153 ,  B22F1/00 ,  C22C45/02 ,  C22C38/38 ,  B22F9/10 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/20 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  H01F1/20 ,  H01F27/255

摘要： A soft magnetic powder of the invention has a composition represented by Fe100-a-b-c-d-e-fCuaSibBcMdM′eXf (at %) [wherein M is Nb, W, Ta, Zr, Hf, Ti, or Mo, M′ is V, Cr, Mn, Al, a platinum group element, Sc, Y, Au, Zn, Sn, or Re, X is C, P, Ge, Ga, Sb, In, Be, or As, and a, b, c, d, e, and f are numbers that satisfy the following formulae: 0.1≤a≤3, 0

公开(公告)号：US20170148554A1

公开(公告)日：2017-05-25

申请号：US15352929

申请日：2016-11-16

申请人： Seiko Epson Corporation

发明人： Yasuko KUDO

IPC分类号： H01F1/147 ,  H01F27/255 ,  H01F3/08

CPC分类号： H01F1/14791 ,  C22C33/00 ,  C22C33/003 ,  C22C33/0278 ,  C22C2202/02 ,  H01F1/15308 ,  H01F1/15333 ,  H01F1/1535 ,  H01F1/15366 ,  H01F3/08 ,  H01F27/24 ,  H01F27/255 ,  H01F41/0246

摘要： A soft magnetic powder has a composition represented by Fe100-a-b-c-d-e-fCuaSibBcMdM′eXf (at %) (wherein M is Nb, W, Ta, Zr, Hf, Ti, or Mo, M′ is V, Cr, Mn, Al, a platinum group element, Sc, Y, Au, Zn, Sn, or Re, X is C, P, Ge, Ga, Sb, In, Be, or As, and a, b, c, d, e, and f are numbers that satisfy the following formulae: 0.1≦a≦3, 0

公开(公告)号：US20200243237A1

公开(公告)日：2020-07-30

申请号：US16775318

申请日：2020-01-29

申请人： SEIKO EPSON CORPORATION

发明人： Yasuko KUDO

IPC分类号： H01F1/153 ,  H01F1/20 ,  H01F1/147

摘要： A soft magnetic powder has a composition represented by FexCua(Nb1-zZnz)b(Si1-yBy)100-x-a-b [provided that a, b, and x are each a number whose unit is at %, and are numbers satisfying 0.3≤a≤2.0, 2.0≤b≤4.0, and 73.0≤x≤79.5, and y is a number satisfying f(x)≤y

公开(公告)号：US20170178776A1

公开(公告)日：2017-06-22

申请号：US15370098

申请日：2016-12-06

申请人： Seiko Epson Corporation

发明人： Yasuko KUDO ,  Toshiki AKAZAWA ,  Yu MAEDA

IPC分类号： H01F1/147 ,  H01F27/255 ,  C22C38/34 ,  C22C38/32 ,  C22C38/28 ,  C22C38/26 ,  C22C38/20 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  B22F9/10 ,  B22F1/00 ,  H01F1/20

摘要： A soft magnetic powder of the invention has a composition represented by Fe100-a-b-c-d-e-fCuaSibBcMdM′eXf (at %) [wherein M is Nb, W, Ta, Zr, Hf, Ti, or Mo, M′ is V, Cr, Mn, Al, a platinum group element, Sc, Y, Au, Zn, Sn, or Re, X is C, P, Ge, Ga, Sb, In, Be, or As, and a, b, c, d, e, and f are numbers that satisfy the following formulae: 0.1≦a≦3, 0

公开(公告)号：US20230290555A1

公开(公告)日：2023-09-14

申请号：US18182706

申请日：2023-03-13

申请人： SEIKO EPSON CORPORATION

发明人： Yasuko KUDO ,  Atsushi NAKAMURA

IPC分类号： H01F1/36 ,  H01F3/08

CPC分类号： H01F1/36 ,  H01F3/08

摘要： A soft magnetic powder contains a particle having a composition represented by FexCuaNbb(S1-yBy)100-x-a-b, a, b, and x being numbers whose units are atomic %, in which 0.3≤a≤2.0, 2.0≤b≤4.0, and 73.0≤x≤79.5, and y being a number satisfying f(x)≤y≤0.99, and f(x)=(4×10−34)x17.56. When an XPS spectrum of the particle is obtained, and fitting processing is performed on an O1s peak, the O1s peak is separated into a first element peak of 532 eV or less and a second element peak of more than 532 eV, and S2/S1 is 1.5 or more where S1 is an area of the first element peak and S2 is an area of the second element peak.

公开(公告)号：US20200243235A1

公开(公告)日：2020-07-30

申请号：US16775659

申请日：2020-01-29

申请人： SEIKO EPSON CORPORATION

发明人： Yasuko KUDO ,  Mayu WATANABE

IPC分类号： H01F1/147 ,  H01F1/153 ,  H01F27/255 ,  C22C38/16 ,  C22C38/12 ,  C22C38/02 ,  C22C38/00

摘要： A soft magnetic powder has a composition represented by FexCuaNbb(Si1-yBy) 100-x-a-b-cCc [provided that a, b, c, and x are each a number whose unit is at %, and are numbers satisfying 0.3≤a≤2.0, 2.0≤b≤4.0, 0.1≤c≤4.0, and 72.0≤x≤79.3, and y is a number satisfying f(x)≤y≤0.99, in which f(x)=(4×1034)x17.56+0.07], and contains a crystalline structure having a particle diameter of 1.0 nm or more and 30.0 nm or less at 30 vol % or more.

公开(公告)号：US20200243236A1

公开(公告)日：2020-07-30

申请号：US16776210

申请日：2020-01-29

申请人： SEIKO EPSON CORPORATION

发明人： Yasuko KUDO

IPC分类号： H01F1/147 ,  C22C38/02 ,  C22C38/00 ,  C22C38/12 ,  C22C38/16 ,  H01F27/255

摘要： A soft magnetic powder has a composition represented by FexCuaNbb(Si1-yBy)100-x-a-b-cPc [provided that a, b, c, and x are each a number whose unit is at %, and are numbers satisfying 0.3≤a≤2.0, 2.0≤b≤4.0, 0.1≤c≤4.0, and 72.0≤x≤79.3, and y is a number satisfying f(x)≤y≤0.99, in which f(x)=(4×10−34)x17.56+0.07], and contains a crystalline structure having a particle diameter of 1.0 nm or more and 30.0 nm or less at 30 vol % or more.

公开(公告)号：US20180301258A1

公开(公告)日：2018-10-18

申请号：US15949421

申请日：2018-04-10

申请人： Seiko Epson Corporation

发明人： Yasuko KUDO

IPC分类号： H01F1/153 ,  H01F27/255 ,  C22C45/02 ,  B22F5/10

摘要： A soft magnetic powder has a composition represented by Fe100-a-b-c-d-e-fCuaSibBcMdM′eXf (at %) (wherein M is at least one element selected from the group consisting of Nb and the like, M′ is at least one element selected from the group consisting of V and the like, X is at least one element selected from the group consisting of C and the like, and 0.1≤a≤3, 0

公开(公告)号：US20180090252A1

公开(公告)日：2018-03-29

申请号：US15716933

申请日：2017-09-27

申请人： Seiko Epson Corporation

发明人： Yasuko KUDO

IPC分类号： H01F1/153 ,  H01F27/255 ,  H01F27/28

CPC分类号： H01F1/15308 ,  B22F1/0018 ,  B22F1/0085 ,  B22F9/082 ,  B22F2999/00 ,  C22C33/003 ,  C22C33/02 ,  C22C33/0257 ,  C22C38/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/20 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  H01F1/15333 ,  H01F1/1535 ,  H01F27/255 ,  H01F27/28 ,  C22C2200/02 ,  C22C2202/02

摘要： A soft magnetic powder has a composition represented by Fe100-a-b-c-d-e-fCuaSibBcMdM′eXf (at %) (wherein M is at least one element selected from the group consisting of Nb and the like, M′ is at least one element selected from the group consisting of V and the like, X is at least one element selected from the group consisting of C and the like, and a, b, c, d, e, and f satisfy the following formulae: 0.1≦a≦3, 0