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11. 发明授权

US07211157B2 Rare-earth alloy, rare-earth sintered magnet, and methods of manufacturing 有权
标题翻译：稀土类合金，稀土类烧结磁体及制造方法
公开(公告)号：US07211157B2
公开(公告)日：2007-05-01
申请号：US10864427
申请日：2004-06-10
申请人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
发明人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
IPC分类号： H01F1/055
CPC分类号： C22C1/0441 , B22F2003/248 , B22F2009/041 , B22F2998/10 , C22C19/007 , C22C19/07 , H01F1/0557 , H01F41/026 , H01F41/0266 , H01F41/0273 , B22F9/04 , B22F3/02 , B22F3/10 , B22F3/24
摘要： A rare-earth alloy ingot is produced by melting an alloy composed of 20–30 wt % of a rare-earth constituent which is Sm alone or at least 50 wt % Sm in combination with at least one other rare-earth element, 10–45 wt % of Fe, 1–10 wt % of Cu and 0.5–5 wt % of Zr, with the balance being Co, and quenching the molten alloy in a strip casting process. The strip-cast alloy ingot has a content of 1–200 μm size equiaxed crystal grains of at least 20 vol % and a thickness of 0.05–3 mm. Rare-earth sintered magnets made from such alloys exhibit excellent magnetic properties and can be manufactured under a broad optimal temperature range during sintering and solution treatment.
摘要翻译：稀土合金锭通过将由20-30重量％的Sm单独或至少50重量％的Sm与至少一种其它稀土元素组合的稀土组分，10重量％ 45重量％的Fe，1-10重量％的Cu和0.5-5重量％的Zr，余量为Co，并在条带铸造工艺中淬火熔融合金。带状铸造合金锭的含量为至少20体积％，厚度为0.05-3毫米的1-200毫米等轴晶粒。由这种合金制成的稀土烧结磁体显示出优异的磁性能，并且可以在烧结和固溶处理期间在宽的最佳温度范围内制造。

12. 发明授权

US07691323B2 Rare-earth alloy, rare-earth sintered magnet, and methods of manufacturing 有权
标题翻译：稀土类合金，稀土类烧结磁体及制造方法
公开(公告)号：US07691323B2
公开(公告)日：2010-04-06
申请号：US12044101
申请日：2008-03-07
申请人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
发明人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
IPC分类号： B22F1/00 , H01F1/055
CPC分类号： C22C1/0441 , B22F2003/248 , B22F2009/041 , B22F2998/10 , C22C19/007 , C22C19/07 , H01F1/0557 , H01F41/026 , H01F41/0266 , H01F41/0273 , B22F9/04 , B22F3/02 , B22F3/10 , B22F3/24
摘要： A rare-earth alloy ingot is produced by melting an alloy composed of 20-30 wt % of a rare-earth constituent which is Sm alone or at least 50 wt % Sm in combination with at least one other rare-earth element, 10-45 wt % of Fe, 1-10 wt % of Cu and 0.5-5 wt % of Zr, with the balance being Co, and quenching the molten alloy in a strip casting process. The strip-cast alloy ingot has a content of 1-200 μm size equiaxed crystal grains of at least 20 vol % and a thickness of 0.05-3 mm. Rare-earth sintered magnets made from such alloys exhibit excellent magnetic properties and can be manufactured under a broad optimal temperature range during sintering and solution treatment.
摘要翻译：稀土合金锭通过将由20-30重量％的Sm单独或至少50重量％的Sm与至少一种其它稀土元素组合的稀土组分，10重量％ 45重量％的Fe，1-10重量％的Cu和0.5-5重量％的Zr，余量为Co，并在条带铸造工艺中淬火熔融合金。带状铸造合金锭的含量为至少20体积％，厚度为0.05-3毫米的等于1-200微米的等轴晶粒。由这种合金制成的稀土烧结磁体显示出优异的磁性能，并且可以在烧结和固溶处理期间在宽的最佳温度范围内制造。

13. 发明申请

US20070051431A1 Rare-earth alloy, rare-earth sintered magnet, and methods of manufacturing 审中-公开
公开(公告)号：US20070051431A1
公开(公告)日：2007-03-08
申请号：US11591547
申请日：2006-11-02
申请人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
发明人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
IPC分类号： H01F1/055
CPC分类号： C22C1/0441 , B22F2003/248 , B22F2009/041 , B22F2998/10 , C22C19/007 , C22C19/07 , H01F1/0557 , H01F41/026 , H01F41/0266 , H01F41/0273 , B22F9/04 , B22F3/02 , B22F3/10 , B22F3/24
摘要： A rare-earth alloy ingot is produced by melting an alloy composed of 20-30 wt % of a rare-earth constituent which is Sm alone or at least 50 wt % Sm in combination with at least one other rare-earth element, 10-45 wt % of Fe, 1-10 wt % of Cu and 0.5-5 wt % of Zr, with the balance being Co, and quenching the molten alloy in a strip casting process. The strip-cast alloy ingot has a content of 1-200 μm size equiaxed crystal grains of at least 20 vol % and a thickness of 0.05-3 mm. Rare-earth sintered magnets made from such alloys exhibit excellent magnetic properties and can be manufactured under a broad optimal temperature range during sintering and solution treatment.

14. 发明申请

US20060185766A1 Rare-earth alloy, rare-earth sintered magnet, and methods of manufacturing 有权
公开(公告)号：US20060185766A1
公开(公告)日：2006-08-24
申请号：US10864427
申请日：2004-06-10
申请人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
发明人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
IPC分类号： H01F1/055
CPC分类号： C22C1/0441 , B22F2003/248 , B22F2009/041 , B22F2998/10 , C22C19/007 , C22C19/07 , H01F1/0557 , H01F41/026 , H01F41/0266 , H01F41/0273 , B22F9/04 , B22F3/02 , B22F3/10 , B22F3/24
摘要： A rare-earth alloy ingot is produced by melting an alloy composed of 20-30 wt % of a rare-earth constituent which is Sm alone or at least 50 wt % Sm in combination with at least one other rare-earth element, 10-45 wt % of Fe, 1-10 wt % of Cu and 0.5-5 wt % of Zr, with the balance being Co, and quenching the molten alloy in a strip casting process. The strip-cast alloy ingot has a content of 1-200 μm size equiaxed crystal grains of at least 20 vol % and a thickness of 0.05-3 mm. Rare-earth sintered magnets made from such alloys exhibit excellent magnetic properties and can be manufactured under a broad optimal temperature range during sintering and solution treatment.

15. 发明授权

US06773517B2 Rare-earth alloy, rate-earth sintered magnet, and methods of manufacturing 有权
标题翻译：稀土合金，速率 - 地烧结磁体及制造方法
公开(公告)号：US06773517B2
公开(公告)日：2004-08-10
申请号：US09948914
申请日：2001-09-10
申请人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
发明人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
IPC分类号： H01F1055
CPC分类号： C22C1/0441 , B22F2003/248 , B22F2009/041 , B22F2998/10 , C22C19/007 , C22C19/07 , H01F1/0557 , H01F41/026 , H01F41/0266 , H01F41/0273 , B22F9/04 , B22F3/02 , B22F3/10 , B22F3/24
摘要： A rare-earth alloy ingot is produced by melting an alloy composed of 20-30 wt % of a rare-earth constituent which is Sm alone or at least 50 wt % Sm in combination with at least one other rare-earth element, 10-45 wt % of Fe, 1-10 wt % of Cu and 0.5-5 wt % of Zr, with the balance being Co, and quenching the molten alloy in a strip casting process. The strip-cast alloy ingot has a content of 1-200 &mgr;m size equiaxed crystal grains of at least 20 vol % and a thickness of 0.05-3 mm. Rare-earth sintered magnets made from such alloys exhibit excellent magnetic properties and can be manufactured under a broad optimal temperature range during sintering and solution treatment.
摘要翻译：稀土合金锭通过将由20-30重量％的Sm单独或至少50重量％的Sm与至少一种其它稀土元素组合的稀土组分，10重量％ 45重量％的Fe，1-10重量％的Cu和0.5-5重量％的Zr，余量为Co，并在条带铸造工艺中淬火熔融合金。带状铸造合金锭的含量为至少20体积％，厚度为0.05-3毫米的1-200毫米等轴晶粒。由这种合金制成的稀土烧结磁体显示出优异的磁性能，并且可以在烧结和固溶处理期间在宽的最佳温度范围内制造。

16. 发明授权

US08211327B2 Preparation of rare earth permanent magnet material 有权
标题翻译：稀土永磁材料的制备
公开(公告)号：US08211327B2
公开(公告)日：2012-07-03
申请号：US10572753
申请日：2005-03-22
申请人： Hajime Nakamura , Koichi Hirota , Takehisa Minowa
发明人： Hajime Nakamura , Koichi Hirota , Takehisa Minowa
IPC分类号： C04B35/04 , C04B35/64 , C04B35/40 , C04B35/26 , H01F1/00 , H01F1/26 , H01F1/04 , H01F1/14 , B22F3/00
CPC分类号： B22F9/023 , B22F2009/044 , B22F2998/10 , B22F2999/00 , H01F1/0577 , H01F41/0293 , H01J37/32669 , B22F9/04 , B22F3/02 , B22F3/10 , B22F2201/11 , B22F2201/02
摘要： A method for preparing a rare earth permanent magnet material comprising the steps of: disposing a powder comprising one or more members selected from an oxide of R2, a fluoride of R3, and an oxyfluoride of R4 wherein R2, R3 and R4 each are one or more elements selected from among rare earth elements inclusive of Y and Sc on a sintered magnet form of a R1—Fe—B composition wherein R1 is one or more elements selected from among rare earth elements inclusive of Y and Sc, and heat treating the magnet form and the powder at a temperature equal to or below the sintering temperature of the magnet in vacuum or in an inert gas. The invention offers a high performance, compact or thin permanent magnet having a high remanence and coercivity at a high productivity.
摘要翻译：一种制备稀土永磁材料的方法，包括以下步骤：设置包含一种或多种选自R 2的氧化物，R 3的氟化物和R 4的氟氧化物的一种或多种的粉末，其中R 2，R 3和R 4各自为一个或选自包含Y和Sc的稀土元素中的更多元素是R1-Fe-B组合物的烧结磁体形式，其中R1是选自包括Y和Sc的稀土元素中的一种或多种元素，并且对磁体进行热处理在等于或低于磁体在真空或惰性气体中的温度的温度下形成粉末。本发明以高生产率提供具有高剩磁和矫顽力的高性能，紧凑或薄的永久磁铁。

17. 发明授权

US07333298B2 Magnetic head actuator and magnetic disk drive using the same 失效
标题翻译：磁头执行器和磁盘驱动器使用相同
公开(公告)号：US07333298B2
公开(公告)日：2008-02-19
申请号：US11004861
申请日：2004-12-07
申请人： Hajime Nakamura , Takehisa Minowa
发明人： Hajime Nakamura , Takehisa Minowa
IPC分类号： G11B5/56
CPC分类号： G11B5/5552 , G11B5/59627
摘要： In conjunction with a magnetic disk drive unit comprising a voice coil motor (14), an arm (12) extending from the motor, a magnetic head actuator (2) mounted at a distal end of the arm, a suspension (16) coupled to the actuator, and a magnetic head slider mounted on the suspension at its distal end, the magnetic head actuator (2) comprises a stator section (30) secured to the arm distal end, an attachment section (18) secured to the arm distal end together with the stator section, micro-beams (20, 22) extending from the attachment section, a rotor section (24) supported for swing motion by the micro-beams, a permanent magnet (32) disposed in the stator section, and a coil (28) disposed in the rotor section. Electric current is conducted through the coil in the magnetic field created by the permanent magnet for causing the micro-beams to be displaced for inducing swing motion of the suspension secured to the rotor section and the magnetic head slider mounted thereon.
摘要翻译：结合包括音圈电动机（14）的磁盘驱动单元，从电动机延伸的臂（12），安装在臂的远端的磁头致动器（2），悬架（16），其联接到致动器和安装在其远端处的悬架上的磁头滑块，磁头致动器（2）包括固定到臂远端的定子部分（30），固定到臂远端的附接部分（18）与所述定子部分一起，从所述安装部延伸的微梁（20,22），被所述微梁支撑以摆动运动的转子部分（24），设置在所述定子部分中的永磁体（32），以及设置在转子部分中的线圈（28）。在由永久磁铁产生的磁场中，电流通过线圈传导，使得微波束发生位移，以引起固定在转子部分上的悬架和安装在其上的磁头滑块的摆动运动。

18. 发明申请

US20050122629A1 Magnetic head actuator and magnetic disk drive using the same 失效
标题翻译：磁头执行器和磁盘驱动器使用相同
公开(公告)号：US20050122629A1
公开(公告)日：2005-06-09
申请号：US11004861
申请日：2004-12-07
申请人： Hajime Nakamura , Takehisa Minowa
发明人： Hajime Nakamura , Takehisa Minowa
IPC分类号： G11B5/55 , G11B5/596
CPC分类号： G11B5/5552 , G11B5/59627
摘要： In conjunction with a magnetic disk drive unit comprising a voice coil motor (14), an arm (12) extending from the motor, a magnetic head actuator (2) mounted at a distal end of the arm, a suspension (16) coupled to the actuator, and a magnetic head slider mounted on the suspension at its distal end, the magnetic head actuator (2) comprises a stator section (30) secured to the arm distal end, an attachment section (18) secured to the arm distal end together with the stator section, micro-beams (20, 22) extending from the attachment section, a rotor section (24) supported for swing motion by the micro-beams, a permanent magnet (32) disposed in the stator section, and a coil (28) disposed in the rotor section. Electric current is conducted through the coil in the magnetic field created by the permanent magnet for causing the micro-beams to be displaced for inducing swing motion of the suspension secured to the rotor section and the magnetic head slider mounted thereon.
摘要翻译：结合包括音圈电动机（14）的磁盘驱动单元，从电动机延伸的臂（12），安装在臂的远端的磁头致动器（2），悬架（16），其联接到致动器和安装在其远端处的悬架上的磁头滑块，磁头致动器（2）包括固定到臂远端的定子部分（30），固定到臂远端的附接部分（18）与所述定子部分一起，从所述安装部延伸的微梁（20,22），被所述微梁支撑以摆动运动的转子部分（24），设置在所述定子部分中的永磁体（32），以及设置在转子部分中的线圈（28）。在由永久磁铁产生的磁场中，电流通过线圈传导，使得微波束发生位移，以引起固定在转子部分上的悬架和安装在其上的磁头滑块的摆动运动。

19. 发明授权

US08420010B2 Method for preparing rare earth permanent magnet material 有权
标题翻译：稀土永磁材料的制备方法
公开(公告)号：US08420010B2
公开(公告)日：2013-04-16
申请号：US11916498
申请日：2007-03-28
申请人： Hajime Nakamura , Takehisa Minowa , Koichi Hirota
发明人： Hajime Nakamura , Takehisa Minowa , Koichi Hirota
IPC分类号： B22F7/00
CPC分类号： C23C10/30 , B22F3/24 , B22F2003/241 , B22F2003/242 , B22F2003/247 , B22F2003/248 , C21D6/00 , C22C38/005 , C22C2202/02 , C23C10/28 , C23C10/52 , C23C24/08 , H01F1/0577 , H01F41/0293
摘要： A method for preparing a rare earth permanent magnet material is characterized by comprising the steps of disposing a powder mixture on a surface of a sintered magnet body of R1—Fe—B composition wherein R1 is at least one element selected from rare earth elements inclusive of Sc and Y, the powder mixture comprising a powder containing at least 0.5% by weight of M which is at least one element selected from Al, Cu, and Zn and having an average particle size equal to or less than 300 μm and a powder containing at least 30% by weight of a fluoride of R2 which is at least one element selected from rare earth elements inclusive of Sc and Y and having an average particle size equal to or less than 100 μm, and heat treating the magnet body having the powder disposed on its surface at a temperature equal to or below the sintering temperature of the magnet body in vacuum or in an inert gas, for causing at least one of M and R2 in the powder mixture to be absorbed in the magnet body. The invention provides an R—Fe—B sintered magnet with high performance and a minimized amount of Tb or Dy used.
摘要翻译：一种制备稀土永磁材料的方法的特征在于包括以下步骤：在R1-Fe-B组合物的烧结磁体的表面上设置粉末混合物，其中R 1是选自稀土元素中的至少一种元素，包括 Sc和Y，所述粉末混合物包含含有至少0.5重量％M的至少一种选自Al，Cu和Zn的元素并且具有等于或小于300μm的平均粒度的粉末和包含至少30重量％的R 2的氟化物，其为选自包括Sc和Y的稀土元素中的至少一种元素，并且具有等于或小于100μm的平均粒度，并且对具有粉末的磁体进行热处理在真空中或在惰性气体中的等于或低于磁体的烧结温度的温度下，在粉末混合物中使M和R2中的至少一个吸收在磁体中。本发明提供一种具有高性能和最小量的Tb或Dy的R-Fe-B烧结磁体。

20. 发明授权

US07955443B2 Method for preparing rare earth permanent magnet material 有权
标题翻译：稀土永磁材料的制备方法
公开(公告)号：US07955443B2
公开(公告)日：2011-06-07
申请号：US11783639
申请日：2007-04-11
申请人： Hajime Nakamura , Takehisa Minowa , Koichi Hirota
发明人： Hajime Nakamura , Takehisa Minowa , Koichi Hirota
IPC分类号： H01F1/057
CPC分类号： H01F41/0293 , H01F1/0577
摘要： A permanent magnet material is prepared by covering an anisotropic sintered magnet body of formula: R1x(Fe1-yCoy)100-x-z-aBzMa wherein R1 is a rare earth element, M is Al, Cu or the like, with a powder comprising an oxide of R2, a fluoride of R3 or an oxyfluoride of R4 wherein R2, R3, and R4 are rare earth elements, and having an average particle size up to 100 μm, heat treating the powder-covered magnet body in a hydrogen gas-containing atmosphere for inducing disproportionation reaction on R12Fe14B compound, and continuing heat treatment at a reduced hydrogen gas partial pressure for inducing recombination reaction to said compound, thereby finely dividing said compound phase to a crystal grain size up to 1 μm, and for effecting absorption treatment, thereby causing R2, R3 or R4 to be absorbed in the magnet body.
摘要翻译：通过覆盖式为：R1x（Fe1-yCoy）100-xz-aBzMa的各向异性烧结磁体，其中R1是稀土元素，M是Al，Cu等，并且包含氧化物的R2，R3的氟化物或R4的氟氧化物，其中R2，R3和R4是稀土元素，平均粒径高达100μm，在含氢气体的气氛中对粉末包覆的磁体进行热处理用于在R12Fe14B化合物上诱导歧化反应，并且在降低的氢气分压下继续热处理以诱导与所述化合物的复合反应，从而将所述化合物相细分至1μm以上的晶粒尺寸，从而进行吸收处理导致R2，R3或R4被吸收在磁体中。

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