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公开(公告)号：US10464132B2
公开(公告)日：2019-11-05
申请号：US14773571
申请日：2013-05-24
申请人： Noritsugu Sakuma , Hidefumi Kishimoto , Mikiya Nozaki , Masao Yano , Tetsuya Shoji , Akira Manabe
发明人： Noritsugu Sakuma , Hidefumi Kishimoto , Mikiya Nozaki , Masao Yano , Tetsuya Shoji , Akira Manabe
摘要： A method for producing a raw material powder of a permanent magnet, includes: preparing a material powder of a permanent magnet, measuring magnetic characteristics of the material powder, and judging the quality of the material powder as the raw material powder based on a preliminarily determined relation between magnetic characteristics and the structure of the material powder. A method for producing a permanent magnet includes integrating material powders judged as good in the step of judging the quality as raw material powders by the method for producing a raw material powder of a permanent magnet. A method for inspecting a permanent magnet material powder includes transmitting a magnetic field to a material powder of a permanent magnet, receiving the magnetic field from the material powder, and measuring a magnetic field difference between the transmitted magnetic field and the received magnetic field as magnetic characteristics of the material powder.
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公开(公告)号：US20130248754A1
公开(公告)日：2013-09-26
申请号：US13824572
申请日：2011-05-13
申请人： Noritsugu Sakuma , Hidefumi Kishimoto , Akira Kato , Tetsuya Shoji , Dominique Givord , Nora Dempsey , Thomas George Woodcock , Oliver Gutfleisch , Gino Hrkac , Thomas Schrefl
发明人： Noritsugu Sakuma , Hidefumi Kishimoto , Akira Kato , Tetsuya Shoji , Dominique Givord , Nora Dempsey , Thomas George Woodcock , Oliver Gutfleisch , Gino Hrkac , Thomas Schrefl
CPC分类号： H01F41/00 , B22F2003/248 , B22F2998/00 , B22F2998/10 , B22F2999/00 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/16 , C22C2202/02 , H01F1/01 , H01F1/0576 , H01F1/0577 , H01F10/126 , H01F41/005 , H01F41/0273 , H01F41/32 , B22F9/08 , B22F1/0055 , B22F3/10 , B22F3/24 , B22F1/0044 , B22F3/105
摘要： The method of the present invention produces a rare earth magnet, which is represented by a neodymium magnet (Nd2Fe14B) and neodymium magnet films with applications in micro-systems, by using a heat treatment method capable of enhancing the magnetic characteristics, particularly the magnetic coercive force. A method for producing a rare earth magnet, comprising: (a) quenching a molten metal having a rare earth magnet composition to form quenched flakes of nanocrystalline structure; sintering the quenched flakes; subjecting the sintered body obtained to an orientation treatment; and applying a heat treatment with pressurization at a temperature sufficiently high to enable diffusion or fluidization of a grain boundary phase and at the same time, low enough to prevent coarsening of the crystal grains. (b) thick films deposited on a substrate, applying an annealing to crystallize with pressurization at a temperature sufficiently high to enable diffusion or fluidization of a grain boundary phase and, at the same time, low enough to prevent coarsening of the crystal grains. Preferably, an element capable of lowering the temperature at which the grain boundary phase can be diffused or fluidized, is added to the rare earth magnet composition.
摘要翻译： 本发明的方法通过使用能够增强磁特性，特别是磁矫顽力的热处理方法来生产由钕磁体（Nd2Fe14B）和钕磁体薄膜表示的稀土磁体，其应用在微系统中 力。 一种稀土类磁体的制造方法，其特征在于，包括：（a）使具有稀土类磁铁组合物的熔融金属淬火，形成骤冷的纳米晶体结构的片状物; 烧结淬火片; 对获得的烧结体进行取向处理; 在足够高的温度下进行加压热处理，使晶界相扩散或流化，同时低至足以防止晶粒粗大化。 （b）沉积在基板上的厚膜，施加退火以在足够高的温度下加压结晶，以使晶界相扩散或流化，同时足够低以防止晶粒粗化。 优选地，能够将能够使晶界相扩散或流化的温度降低的元素添加到稀土类磁体组合物中。
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3.发明申请METHOD FOR PRODUCTION OF NdFeBCu MAGNET AND NdFeBCu MAGNET MATERIAL 审中-公开NdFeBCu磁铁和NdFeBCu磁铁材料的生产方法公开(公告)号：US20110318215A1
公开(公告)日：2011-12-29
申请号：US13254894
申请日：2010-02-24
CPC分类号： H01F1/0577 , B22F2998/10 , B22F2999/00 , C22C1/0441 , C22C38/002 , C22C38/005 , C22C38/16 , C22C2202/02 , H01F1/0571 , H01F41/0266 , B22F3/14 , B22F2201/20 , B22D1/00 , B22F9/04
摘要： A method for producing an NdFeBCu magnet includes supplying an alloy melt having a composition that is represented by the general formula NdyFe100-x-y-zBzCuX, where x is between 1 and 3 inclusive, y is larger than 12 and at most 24, and z is larger than 6 and at most 12, onto a cooled roll to obtain a quenched ribbon as a ribbon shaped magnetic material.
摘要翻译： NdFeBCu磁体的制造方法包括：供给具有由通式NdyFe100-xy-zBzCuX表示的组成的合金熔体，其中x在1和3之间，其中x大于12且最多为24，z为 大于6且至多12个，到冷却的辊上，以得到带状磁性材料的淬火带。
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公开(公告)号：US09520230B2
公开(公告)日：2016-12-13
申请号：US13824572
申请日：2011-05-13
申请人： Noritsugu Sakuma , Hidefumi Kishimoto , Akira Kato , Tetsuya Shoji , Dominique Givord , Nora Dempsey , Thomas George Woodcock , Oliver Gutfleisch , Gino Hrkac , Thomas Schrefl
发明人： Noritsugu Sakuma , Hidefumi Kishimoto , Akira Kato , Tetsuya Shoji , Dominique Givord , Nora Dempsey , Thomas George Woodcock , Oliver Gutfleisch , Gino Hrkac , Thomas Schrefl
IPC分类号： H01F41/00 , H01F41/02 , H01F41/32 , C22C38/00 , C22C38/06 , C22C38/16 , H01F1/01 , H01F1/057 , H01F10/12 , B22F3/24
CPC分类号： H01F41/00 , B22F2003/248 , B22F2998/00 , B22F2998/10 , B22F2999/00 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/16 , C22C2202/02 , H01F1/01 , H01F1/0576 , H01F1/0577 , H01F10/126 , H01F41/005 , H01F41/0273 , H01F41/32 , B22F9/08 , B22F1/0055 , B22F3/10 , B22F3/24 , B22F1/0044 , B22F3/105
摘要： A rare earth magnet, which is represented by a neodymium magnet (Nd2Fe14B) and neodymium magnet films with applications in micro-systems. A method for producing a rare earth magnet, comprising: (a) quenching a molten metal having a rare earth magnet composition to form quenched flakes of nanocrystalline structure; sintering the quenched flakes; subjecting the sintered body obtained to an orientation treatment; and applying a heat treatment with pressurization at a temperature sufficiently high to enable diffusion or fluidization of a grain boundary phase and at the same time, low enough to prevent coarsening of the crystal grains, (b) thick films deposited on a substrate, applying an annealing to crystallize with pressurization at a temperature sufficiently high to enable diffusion or fluidization of a grain boundary phase and, at the same time, low enough to prevent coarsening of the crystal grains.
摘要翻译： 一种稀土磁体，由钕磁铁（Nd2Fe14B）和钕磁体薄膜组成，应用于微系统。 一种稀土类磁体的制造方法，其特征在于，包括：（a）使具有稀土类磁铁组合物的熔融金属淬火，形成骤冷的纳米晶体结构的片状物; 烧结淬火片; 对获得的烧结体进行取向处理; 并且在足够高的温度下进行加压热处理以使晶界相扩散或流化，同时低至足以防止晶粒粗大化，（b）沉积在基板上的厚膜， 在足够高的温度下通过加压结晶退火以使晶界相扩散或流化，同时足够低以防止晶粒粗化。
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5.发明申请METHOD FOR PRODUCING SINTERED RARE-EARTH MAGNET, SINTERED RARE-EARTH MAGNET, AND MATERIAL FOR SAME 有权烧结稀土磁铁，烧结稀土磁体及其材料的生产方法公开(公告)号：US20130092867A1
公开(公告)日：2013-04-18
申请号：US13511465
申请日：2010-11-18
IPC分类号： H01F1/11
CPC分类号： H01F1/11 , B82Y40/00 , H01F1/0572 , H01F1/0577 , H01F1/058 , H01F1/061 , H01F1/086 , H01F41/0266 , Y10S977/838 , Y10S977/90
摘要： A method for producing a sintered rare-earth magnet characterized by sintering a raw material that includes a ribbon-shaped polycrystalline phase with an average grain size of 10 to 200 nm fabricated by rapid solidification of an alloy melt having a rare-earth magnet composition, and a low-melting point phase formed on the surface of the polycrystalline phase and having a melting point lower than the polycrystalline phase.
摘要翻译： 一种烧结稀土类磁铁的制造方法，其特征在于，通过使具有稀土类磁铁组合物的合金熔体的快速凝固而制造的平均粒径为10〜200nm的带状多晶相烧结原料， 和在多晶相的表面上形成的熔点低于多晶相的低熔点相。
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6.发明申请METHOD FOR PRODUCTION OF NDFEBGA MAGNET AND NDFEBGA MAGNET MATERIAL 审中-公开NDFEBGA磁体和NDFEBGA磁体材料的生产方法公开(公告)号：US20110286878A1
公开(公告)日：2011-11-24
申请号：US13145819
申请日：2010-02-04
CPC分类号： H01F1/0577 , B22F2009/048 , B22F2998/10 , B22F2999/00 , H01F41/0266 , B22F3/14 , B22F9/04 , B22F9/08 , B22F2202/06
摘要： An NdFeBGa magnet material has a composition that is represented by the genera formula NdyFe100-x-y-zBzGax, where x is between 1 and 3 inclusive, y is between 14 and 24 inclusive, and z is between 7 and 12 inclusive.
摘要翻译： NdFeBGa磁体材料具有由公式NdyFe100-x-y-zBzGax表示的组成，其中x在1和3之间，其中x在14和24之间，其中z在7和12之间。
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公开(公告)号：US20100321139A1
公开(公告)日：2010-12-23
申请号：US12816549
申请日：2010-06-16
CPC分类号： H01F41/0266 , B22F1/0044 , B22F2998/10 , H01F1/0577 , B22F9/08 , B22F3/14
摘要： A method of producing a permanent magnet includes: forming a multiplicity of solidified ribbons that are composed of nanosized crystal grains by melting a magnet material and rapidly cooling the molten product; binding the multiplicity of solidified ribbons together by compression molding and sintering to form a sintered body; and performing plastic forming on the sintered body to provide the sintered body with a distribution of strain which increases from a peripheral portion to a central portion.
摘要翻译： 永磁体的制造方法包括：通过熔融磁体材料形成多个由纳米尺寸的晶粒构成的凝固带，并快速冷却熔融产物; 通过压缩成型和烧结将多个固化带结合在一起以形成烧结体; 并且在烧结体上进行塑性成形，以使烧结体具有从周边部分向中心部分增加的应变分布。
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8.发明授权公开(公告)号：US09640305B2
公开(公告)日：2017-05-02
申请号：US13511465
申请日：2010-11-18
CPC分类号： H01F1/11 , B82Y40/00 , H01F1/0572 , H01F1/0577 , H01F1/058 , H01F1/061 , H01F1/086 , H01F41/0266 , Y10S977/838 , Y10S977/90
摘要： A method for producing a sintered rare-earth magnet characterized by sintering a raw material that includes a ribbon-shaped polycrystalline phase with an average grain size of 10 to 200 nm fabricated by rapid solidification of an alloy melt having a rare-earth magnet composition, and a low-melting point phase formed on the surface of the polycrystalline phase and having a melting point lower than the polycrystalline phase.
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公开(公告)号：US09761358B2
公开(公告)日：2017-09-12
申请号：US14240133
申请日：2012-08-22
CPC分类号： H01F1/057 , B22F2998/10 , C21D2201/03 , C22C38/002 , C22C38/005 , C22C38/10 , C22C2202/02 , H01F1/0577 , H01F1/0579 , H01F41/0293 , B22F2009/048 , B22F3/10 , B22F2003/248
摘要： A method for producing a nanocrystalline rare earth magnet having a grain and a grain boundary phase includes: quenching a melt of a rare earth magnet composition to form a quenched thin ribbon having a nanocrystalline structure; sintering the quenched thin ribbon to obtain a sintered body; heat treating the sintered body at a temperature which is higher than a lowest temperature in a first temperature range where the grain boundary phase diffuses or flows, and which is lower than a lowest temperature in a second temperature range where the grain becomes coarse; and quenching the heat treated sintered body to 200° C. or less at a cooling speed of 50° C./min or more.
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公开(公告)号：US20140191833A1
公开(公告)日：2014-07-10
申请号：US14240133
申请日：2012-08-22
CPC分类号： H01F1/057 , B22F2998/10 , C21D2201/03 , C22C38/002 , C22C38/005 , C22C38/10 , C22C2202/02 , H01F1/0577 , H01F1/0579 , H01F41/0293 , B22F2009/048 , B22F3/10 , B22F2003/248
摘要： A method for producing a nanocrystalline rare earth magnet having a grain and a grain boundary phase includes: quenching a melt of a rare earth magnet composition to form a quenched thin ribbon having a nanocrystalline structure; sintering the quenched thin ribbon to obtain a sintered body; heat treating the sintered body at a temperature which is higher than a lowest temperature in a first temperature range where the grain boundary phase diffuses or flows, and which is lower than a lowest temperature in a second temperature range where the grain becomes coarse; and quenching the heat treated sintered body to 200° C. or less at a cooling speed of 50° C./min or more.
摘要翻译： 一种具有晶界和晶界相的纳米晶体稀土磁体的制造方法，其特征在于，使稀土类磁体组合物的熔融物淬火，形成具有纳米晶体结构的骤冷薄带; 烧结淬火的薄带以获得烧结体; 在晶界相扩散或流动的第一温度范围内，在比最低温度高的温度下对烧结体进行热处理，该温度低于晶粒变粗的第二温度范围内的最低温度; 并以50℃/分钟以上的冷却速度将热处理烧结体淬火至200℃以下。
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