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

IPC分类号： H01F41/00 ,  H01F1/01

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。

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。