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公开(公告)号：US10951074B2
公开(公告)日：2021-03-16
申请号：US15437474
申请日：2017-02-21
IPC分类号： H01F1/055 , B22F9/04 , B22F3/16 , B22F3/24 , H02K1/02 , C22C19/07 , C22C1/02 , B22D7/00 , B22D25/06 , C22C30/02 , C22F1/10 , H02K1/27 , H02K7/00 , H02K7/18 , H01F1/059
摘要： A permanent magnet is expressed by a composition formula: RpFeqMrCutCo100-p-q-r-t. The magnet comprises a metal structure including a main phase having a Th2Zn17 crystal phase and a grain boundary phase. The main phase includes a cell phase having the Th2Zn17 crystal phase and a Cu-rich phase. A section including a c-axis of the Th2Zn17 crystal phase has a first region in the crystal grain and a second region in the crystal grain, the first region is provided in the cell phase divided by the Cu-rich phase, the second region is provided within a range of not less than 50 nm nor more than 200 nm from the grain boundary phase in a direction perpendicular to an extension direction of the grain boundary phase, and a difference between a Cu concentration of the first region and a Cu concentration of the second region is 0.5 atomic percent or less.
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公开(公告)号：US10650947B2
公开(公告)日：2020-05-12
申请号：US14636268
申请日：2015-03-03
发明人： Yosuke Horiuchi , Shinya Sakurada , Keiko Okamoto , Masaya Hagiwara , Tsuyoshi Kobayashi , Masaki Endo , Tadahiko Kobayashi , Naoyuki Sanada
IPC分类号： H01F1/055 , H02K1/02 , H01F1/053 , C22C1/04 , C22F1/10 , H02K1/27 , C22C19/07 , C22C30/02 , H01F1/059 , B22F9/04 , B22F9/08
摘要： The invention provides a high-performance permanent magnet. The permanent magnet has a composition that is expressed by a composition formula RpFeqMrCutCo100-p-q-r-t, where R is at least one element selected from a rare earth element, M is at least one element selected from the group consisting of Zr, Ti, and Hf, p is a number satisfying 10.8≤p≤12.5 atomic percent, q is a number satisfying 25≤q≤40 atomic percent, r is a number satisfying 0.88≤r≤4.5 atomic percent, and t is a number satisfying 3.5≤t≤13.5 atomic percent. The permanent magnet also has a metallic structure that includes a main phase having a Th2Zn17 crystal phase, and a Cu-M rich phase having a higher Cu concentration and a higher M concentration than the main phase.
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公开(公告)号：US09714458B2
公开(公告)日：2017-07-25
申请号：US14644406
申请日：2015-03-11
发明人： Yosuke Horiuchi , Shinya Sakurada , Masaya Hagiwara , Tsuyoshi Kobayashi , Tadahiko Kobayashi , Naoyuki Sanada
CPC分类号： C22C19/07 , C22C30/00 , C22C30/02 , H01F1/0557 , H02K1/02
摘要： The embodiments provide a high-performance permanent magnet. The permanent magnet includes a sintered body having a composition expressed by a composition formula RpFeqMrCutCo100-p-q-r-t, with carbon in a range from 50 mass ppm to 1500 mass ppm. The sintered body also includes a metallic structure. The metallic structure includes a main phase having a Th2Zn17 crystal phase, and a secondary phase having a carbide phase of the M element of the composition formula. A ratio (I2/I1) of a maximum intensity I2 of a diffraction peak at an angle 2θ in a range from 37.5 degrees to 38.5 degrees to a maximum intensity I1 of a diffraction peak at the angle 2θ in a range from 32.5 degrees to 33.5 degrees is greater than 25 but no greater than 80 in an X-ray diffraction pattern obtained by applying an X-ray diffraction measuring method to the sintered body.
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公开(公告)号：US09618239B2
公开(公告)日：2017-04-11
申请号：US14568194
申请日：2014-12-12
发明人： Tadahiko Kobayashi , Akiko Saito , Shiori Kaji
IPC分类号： F25B21/00
CPC分类号： F25B21/00 , F25B2321/002 , F25B2321/0022 , Y02B30/66
摘要： The magnetic refrigerating device according to one embodiment includes a fixed container filled with a refrigerant, the fixed container including a magnetic material container that is filled with a magnetic material and that can move in the fixed container and an elastic member provided at the end of the magnetic material container. The magnetic refrigerating device also includes a magnetic-field applying/removing mechanism that is provided at the outside of the fixed container, and that can apply and remove a magnetic field to and from the magnetic material and can generate a magnetic torque to the magnetic material container in moving direction of the magnetic material container.
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公开(公告)号：US10770208B2
公开(公告)日：2020-09-08
申请号：US14661122
申请日：2015-03-18
发明人： Yosuke Horiuchi , Shinya Sakurada , Keiko Okamoto , Masaya Hagiwara , Tsuyoshi Kobayashi , Masaki Endo , Tadahiko Kobayashi , Naoyuki Sanada
摘要： A high performance permanent magnet is provided. The permanent magnet includes a composition represented by a composition formula: RpFeqMrCutCo100-p-q-r-t, and a metallic structure including cell phases having a Th2Zn17 crystal phase and Cu-rich phases having higher Cu concentration than the cell phases. An average diameter of the cell phases is 220 nm or less, and in a numeric value range from a minimum diameter to a maximum diameter of the cell phases, a ratio of a number of cell phases having a diameter in a numeric value range of less than upper 20% from the maximum diameter is 20% or less of all the cell phases.
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公开(公告)号：US20170162304A1
公开(公告)日：2017-06-08
申请号：US15413593
申请日：2017-01-24
CPC分类号： H01F1/055 , B22F3/1017 , B22F2998/10 , C22C19/07 , C22C28/00 , C22C30/00 , H01F1/0551 , H01F1/0557 , H02K1/17 , H02K1/27 , H02K1/276 , H02K1/2766 , H02K21/00 , H02K21/14 , B22F9/04 , B22F2009/044 , B22F3/02 , B22F3/101
摘要： A permanent magnet expressed by a composition formula: RpFeqMrCutCo100-p-q-r-t. The magnet comprises a metallic structure including crystal grains which constitutes a main phase having a Th2Zn17 crystal phase. An average value of Fe concentrations in the crystal grains of 20 or more is 28 atomic percent or more and an average value of R element concentrations in the crystal grains of 20 or more is 10 atomic percent or more.
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公开(公告)号：US10480052B2
公开(公告)日：2019-11-19
申请号：US15253945
申请日：2016-09-01
发明人： Masaya Hagiwara , Shinya Sakurada , Yosuke Horiuchi , Tadahiko Kobayashi , Tsuyoshi Kobayashi , Masaki Endo , Naoyuki Sanada , Masami Okamura , Takao Sawa , Keiichi Fuse , Satoru Habu
IPC分类号： H01F1/055 , C22C30/02 , C22C19/07 , C22C1/04 , C22C21/06 , H02K1/02 , B22F5/00 , H01F1/053 , H01F1/08 , H01F1/059 , H01F7/02
摘要： A permanent magnet of the embodiment includes: a composition represented by a composition formula: R(FepMqCurCtCo1-p-q-r-t)z (R is at least one element selected from rare-earth elements, M is at least one element selected from Ti, Zr and Hf, 0.27≤p≤0.45, 0.01≤q≤0.05, 0.01≤r≤0.1, 0.002≤t≤0.03, and 6≤z≤9); and a metallic structure including a main phase containing a Th2Zn17 crystal phase, and a sub phase of the element M having an element M concentration of 30 atomic % or more. The sub phase of the element M precipitates in the metallic structure. A ratio of a circumferential length to a precipitated area of the sub phase of the element M is 1 or more and 10 or less.
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公开(公告)号：US09773592B2
公开(公告)日：2017-09-26
申请号：US14661300
申请日：2015-03-18
发明人： Shinya Sakurada , Yosuke Horiuchi , Keiko Okamoto , Masaya Hagiwara , Tsuyoshi Kobayashi , Masaki Endo , Tadahiko Kobayashi
IPC分类号： H01F1/053 , H01F1/055 , C22C1/00 , H01F1/08 , C22C19/07 , C22C30/02 , H02K1/02 , C22C1/04 , H01F1/059
CPC分类号： H01F1/055 , B22F2998/10 , B22F2999/00 , C22C1/00 , C22C1/0441 , C22C1/0491 , C22C19/07 , C22C30/02 , H01F1/0557 , H01F1/0596 , H01F1/086 , H02K1/02 , B22F9/04 , B22F2009/041 , B22F9/08 , B22F3/02 , B22F3/10 , B22F2003/248 , B22F2202/05
摘要： A permanent magnet of an embodiment includes: a composition represented by a composition formula: R(FepMqCurCo1-p-q-r)z, where R is at least one element selected from rare-earth elements, M is at least one element selected from Zr, Ti, and Hf, and relations of 0.3≦p≦0.4, 0.01≦q≦0.05, 0.01≦r≦0.1, and 7≦z≦8.5 (atomic ratio) are satisfied; and a structure including a cell phase having a Th2Zn17 crystal phase, and a cell wall phase existing to surround the cell phase. An average magnetization of the cell wall phase is 0.2 T or less.
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公开(公告)号：US09502165B2
公开(公告)日：2016-11-22
申请号：US14661119
申请日：2015-03-18
发明人： Yosuke Horiuchi , Shinya Sakurada , Keiko Okamoto , Masaya Hagiwara , Tsuyoshi Kobayashi , Masaki Endo , Tadahiko Kobayashi
IPC分类号： H02K21/00 , H02K15/12 , H01F1/057 , H01F1/055 , H01F1/08 , C22C19/07 , C22C30/02 , H02K1/02 , C22C30/00 , C22C38/00 , C22F1/10 , H01F1/059
CPC分类号： H01F1/055 , B22F2998/10 , B22F2999/00 , C22C19/07 , C22C30/00 , C22C30/02 , C22C38/00 , C22F1/10 , H01F1/0557 , H01F1/0596 , H01F1/086 , H02K1/02 , B22F9/04 , B22F1/0085 , B22F3/14 , B22F2202/06 , B22F2201/20 , B22F2201/11
摘要： A permanent magnet includes: a composition expressed by a composition formula: RpFeqMrCutCo100-p-q-r-t (R is at least one element selected from rare-earth elements, M is at least one element selected from Zr, Ti, and Hf, 10.5≦p≦12.5 at %, 23≦q≦40 at %, 0.88≦r≦4.5 at %, 4.5≦t≦10.7 at %); and a metal structure containing a Th2Zn17 crystal phase and a Cu-rich phase having a Cu concentration higher than that of the Th2Zn17 crystal phase. In a cross section including a c-axis of the Th2Zn17 crystal phase, a number of intersections of the Cu-rich phases existing in an area of 1 μm square is 10 or more.
摘要翻译： 永磁体包括：由组成式RpFeqMrCutCo100-pqrt表示的组成（R是选自稀土元素中的至少一种元素，M是选自Zr，Ti和Hf中的至少一种元素，10.5≤p≤12.5 at％，23≤q≤40at％，0.88≤r≤4.5at％，4.5≤t≤10.7at％）; 以及包含Th2Zn17晶相和Cu浓度高于Th2Zn17结晶相的Cu富集相的金属结构。 在包含Th2Zn17结晶相的c轴的截面中，存在于1μm见方的面积中的富Cu相的数个交点为10个以上。
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公开(公告)号：US09502164B2
公开(公告)日：2016-11-22
申请号：US14661107
申请日：2015-03-18
发明人： Yosuke Horiuchi , Shinya Sakurada , Keiko Okamoto , Masaya Hagiwara , Tsuyoshi Kobayashi , Masaki Endo , Tadahiko Kobayashi
IPC分类号： H02K21/00 , H02K15/12 , H01F1/057 , H01F1/053 , H01F1/055 , C22C19/07 , C22F1/10 , H02K1/02 , H02K1/27 , C22C30/02 , H01F1/059
CPC分类号： H01F1/055 , B22F2003/248 , C22C1/0433 , C22C19/07 , C22C30/02 , C22C2202/02 , C22F1/10 , H01F1/0596 , H02K1/02 , H02K1/276 , H02K1/2766
摘要： A permanent magnet includes: a composition expressed by a composition formula: RpFeqMrCutCo100-p-q-r-t (R is at least one element selected from rare-earth elements, M is at least one element selected from Zr, Ti, and Hf, 10.5≦p≦12.5 at %, 23≦q≦40 at %, 0.88≦r≦4.5 at %, 4.5≦t≦10.7 at %); and a metal structure containing a cell phase having a Th2Zn17 crystal phase, a cell wall phase, an M-rich platelet phase formed vertically to a c-axis of the Th2Zn17 crystal phase, and a Cu-rich platelet phase formed along the M-rich platelet phase.
摘要翻译： 永磁体包括：由组成式RpFeqMrCutCo100-pqrt表示的组成（R是选自稀土元素中的至少一种元素，M是选自Zr，Ti和Hf中的至少一种元素，10.5≤p≤12.5 at％，23≤q≤40at％，0.88≤r≤4.5at％，4.5≤t≤10.7at％）; 以及包含具有Th2Zn17结晶相，细胞壁相，与Th2Zn17结晶相的c轴垂直形成的富M的血小板相的细胞相的金属结构，以及沿着M- 富血小板相。
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