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公开(公告)号：US20090297699A1
公开(公告)日：2009-12-03
申请号：US12473429
申请日：2009-05-28
申请人： Fumitaka Baba , Hideki Nakamura , Satoshi Tanaka , Takeshi Masuda
发明人： Fumitaka Baba , Hideki Nakamura , Satoshi Tanaka , Takeshi Masuda
IPC分类号： B05D7/14
CPC分类号： H01F41/026 , H01F41/0293
摘要： The process for producing a magnet according to the invention is characterized by comprising a first step in which a heavy rare earth compound containing Dy or Th as a heavy rare earth element is adhered onto a sintered compact of a rare earth magnet and a second step in which the heavy rare earth compound-adhered sintered compact is subjected to heat treatment, wherein the heavy rare earth compound is a Dy or Th iron compound.
摘要翻译： 根据本发明的制造磁体的方法的特征在于包括第一步骤，其中将含有Dy或Th的重稀土化合物作为重稀土元素粘附到稀土磁体的烧结体上，第二步骤 重稀土类化合物的烧结体进行热处理，其中重稀土类化合物为Dy或Th铁化合物。
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公开(公告)号：US08394450B2
公开(公告)日：2013-03-12
申请号：US12473429
申请日：2009-05-28
申请人： Fumitaka Baba , Hideki Nakamura , Satoshi Tanaka , Takeshi Masuda
发明人： Fumitaka Baba , Hideki Nakamura , Satoshi Tanaka , Takeshi Masuda
IPC分类号： B05D7/14
CPC分类号： H01F41/026 , H01F41/0293
摘要： The process for producing a magnet according to the invention is characterized by comprising a first step in which a heavy rare earth compound containing Dy or Tb as a heavy rare earth element is adhered onto a sintered compact of a rare earth magnet and a second step in which the heavy rare earth compound-adhered sintered compact is subjected to heat treatment, wherein the heavy rare earth compound is a Dy or Tb iron compound.
摘要翻译： 根据本发明的制造磁体的方法的特征在于包括第一步骤，其中将包含Dy或Tb的重稀土元素的重稀土化合物粘附到稀土磁体的烧结体上，第二步骤 对重稀土类化合物附着的烧结体进行热处理，其中重稀土类化合物为Dy或Tb铁化合物。
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公开(公告)号：US20100129538A1
公开(公告)日：2010-05-27
申请号：US12593324
申请日：2008-03-31
申请人： Ryota Kunieda , Makoto Nakane , Fumitaka Baba , Makoto Iwasaki , Satoshi Tanaka , Hideki Nakamura
发明人： Ryota Kunieda , Makoto Nakane , Fumitaka Baba , Makoto Iwasaki , Satoshi Tanaka , Hideki Nakamura
CPC分类号： C22C33/0278 , B22F2998/00 , B22F2998/10 , B22F2999/00 , C22C2202/02 , H01F1/0577 , H01F41/0293 , B22F2003/247 , B22F2003/248 , B22F9/04 , B22F3/02 , B22F3/1035 , B22F3/24 , B22F2003/242 , B22F1/0074 , B22F2207/01 , B22F2202/05
摘要： The invention provides a process for producing a magnet that not only allows satisfactory Br and HcJ values to be achieved but can also yield a magnet with a sufficiently large squareness ratio. The process for producing a magnet according to the invention is characterized by comprising a first step in which a heavy rare earth compound containing a heavy rare earth element is adhered onto a rare earth magnet sintered compact, and a second step in which the heavy rare earth compound-adhered sintered compact is subjected to heat treatment. The heavy rare earth compound is a hydride of the heavy rare earth element.
摘要翻译： 本发明提供一种制造磁体的方法，其不仅能够实现令人满意的Br和HcJ值，而且还可以产生足够大的矩形比的磁体。 根据本发明的制造磁体的方法的特征在于包括第一步骤，其中将含有重稀土元素的重稀土化合物粘附到稀土磁体烧结体上，第二步是重稀土 复合附着的烧结体进行热处理。 重稀土化合物是重稀土元素的氢化物。
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公开(公告)号：US09154004B2
公开(公告)日：2015-10-06
申请号：US13390016
申请日：2011-03-04
申请人： Makoto Iwasaki , Fumitaka Baba , Satoshi Tanaka , Hideki Sasaki , Takahide Kurahashi , Hitoshi Maro , Keiichi Morimoto , Seiichi Endo
发明人： Makoto Iwasaki , Fumitaka Baba , Satoshi Tanaka , Hideki Sasaki , Takahide Kurahashi , Hitoshi Maro , Keiichi Morimoto , Seiichi Endo
IPC分类号： H02K15/03 , H02K15/12 , H02K15/16 , H01F7/02 , H01F41/02 , H02K1/02 , B22F3/24 , B22F9/02 , B22F9/04 , C22C33/02 , C22C38/00 , C22C38/06 , C22C38/10 , C22C38/16 , H01F1/057
CPC分类号： H02K1/02 , B22F3/24 , B22F9/023 , B22F9/04 , B22F2999/00 , C22C33/0278 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/16 , H01F1/0577 , H01F7/02 , H01F41/0293 , H02K15/03 , B22F2207/01
摘要： In the rare earth sintered magnet, the ratio of R2 to the sum of R1 and R2 that are contained in crystal grain boundaries surrounding the crystal grains in the rare earth sintered magnet body is higher than the ratio of R2 to the sum of R1 and R2 in the crystal grains, and the concentration of R2 increases from the central portion of the rare earth sintered magnet body toward the surface of the rare earth sintered magnet body. In addition, the degree of unevenness in residual magnetic flux density on the surface of the rare earth sintered magnet body is smaller than 3.0%.
摘要翻译： 在稀土烧结磁体中，与稀土类烧结磁体的晶粒周围的晶粒边界所包含的R 2与R 2与R 2之和的比值R2高于R1与R2的和的比例 在晶粒中，R2的浓度从稀土类烧结磁体的中央向稀土类烧结体的表面增加。 此外，稀土烧结磁体的表面残留磁通密度的不均匀度小于3.0％。
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公开(公告)号：US20120139388A1
公开(公告)日：2012-06-07
申请号：US13390016
申请日：2011-03-04
申请人： Makoto Iwasaki , Fumitaka Baba , Satoshi Tanaka , Hideki Sasaki , Takahide Kurahashi , Hitoshi Maro , Keiichi Morimoto , Seiichi Endo
发明人： Makoto Iwasaki , Fumitaka Baba , Satoshi Tanaka , Hideki Sasaki , Takahide Kurahashi , Hitoshi Maro , Keiichi Morimoto , Seiichi Endo
CPC分类号： H02K1/02 , B22F3/24 , B22F9/023 , B22F9/04 , B22F2999/00 , C22C33/0278 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/16 , H01F1/0577 , H01F7/02 , H01F41/0293 , H02K15/03 , B22F2207/01
摘要： In the rare earth sintered magnet, the ratio of R2 to the sum of R1 and R2 that are contained in crystal grain boundaries surrounding the crystal grains in the rare earth sintered magnet body is higher than the ratio of R2 to the sum of R1 and R2 in the crystal grains, and the concentration of R2 increases from the central portion of the rare earth sintered magnet body toward the surface of the rare earth sintered magnet body. In addition, the degree of unevenness in residual magnetic flux density on the surface of the rare earth sintered magnet body is smaller than 3.0%.
摘要翻译： 在稀土烧结磁体中，与稀土类烧结磁体的晶粒周围的晶粒边界所包含的R 2与R 2与R 2之和的比值R2高于R1与R2的和的比例 在晶粒中，R2的浓度从稀土类烧结磁体的中央向稀土类烧结体的表面增加。 此外，稀土烧结磁体的表面残留磁通密度的不均匀度小于3.0％。
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6.发明授权Sintered magnet, motor, automobile, and method for producing sintered magnet 有权烧结磁体，电动机，汽车以及烧结磁体的制造方法公开(公告)号：US09548157B2
公开(公告)日：2017-01-17
申请号：US13384896
申请日：2011-03-29
IPC分类号： H01F41/00 , H01F41/02 , C21D6/00 , C22C38/00 , C22C38/06 , C22C38/10 , C22C38/14 , C22C38/16 , H01F7/02 , H01F1/057
CPC分类号： H01F41/0293 , B22F2207/01 , C21D6/00 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/14 , C22C38/16 , H01F1/0577 , H01F7/02
摘要： The present invention provides a sintered magnet having superior residual magnetic flux density and coercive force. The sintered magnet of the present invention comprises a group of R-T-B based rare earth magnet crystal particles 2 having a core 4 and a shell 6 covering the core 4, the mass ratio of a heavy rare earth element in the shell 6 is higher than the mass ratio of a heavy rare earth element in the core 4, and the thickest part of the shell 6 in the crystal particles 2 faces a grain boundary triple junction 1. A lattice defect 3 is formed between the core 4 and the shell 6.
摘要翻译： 本发明提供了具有优异的剩余磁通密度和矫顽力的烧结磁体。 本发明的烧结磁体包括一组具有核心4的RTB基稀土磁体晶体颗粒2和覆盖核心4的壳体6，壳体6中的重稀土元素的质量比高于质量 芯4中的重稀土元素的比例和晶体颗粒2中的壳6的最厚部分面对晶界三重结1.在芯4和壳6之间形成晶格缺陷3。
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7.发明授权公开(公告)号：US08823478B2
公开(公告)日：2014-09-02
申请号：US13637424
申请日：2011-03-28
IPC分类号： H01F7/02
CPC分类号： H01F41/0293 , B22F2207/01 , B60L11/123 , B60L2220/14 , B60L2220/16 , B60L2220/50 , C22C38/002 , C22C38/005 , H01F1/0577 , H01F41/005 , H02K1/02 , H02K1/04 , H02K1/276 , Y02T10/6217 , Y02T10/641 , Y02T10/7077 , Y10T428/32
摘要： A rare earth sintered magnet 10 including a magnet body that includes a rare earth compound, and a protective layer on the magnet body, having a first layer and a second layer in that order from the magnet body side, wherein the surface portion of the magnet body has a higher heavy rare earth element content than the interior of the magnet body that is surrounded by the surface portion, the first layer includes a rare earth oxide, the mass ratio of the heavy rare earth element being 1 or greater with respect to the light rare earth element, and the second layer includes an oxide containing iron and/or boron which is different from the rare earth oxide, the second layer having a lower rare earth oxide content than the first layer.
摘要翻译： 包括稀土类化合物的磁体和磁铁体上的保护层的稀土类烧结磁体10具有从磁铁体侧依次的第一层和第二层，其中磁体的表面部分 本体具有比由表面部包围的磁体的内部更高的重稀土元素含量，第一层包括稀土类氧化物，重稀土类元素的质量比相对于 轻稀土元素，第二层包括与稀土氧化物不同的含有铁和/或硼的氧化物，第二层具有比第一层低的稀土氧化物含量。
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8.发明申请公开(公告)号：US20130049910A1
公开(公告)日：2013-02-28
申请号：US13637424
申请日：2011-03-28
CPC分类号： H01F41/0293 , B22F2207/01 , B60L11/123 , B60L2220/14 , B60L2220/16 , B60L2220/50 , C22C38/002 , C22C38/005 , H01F1/0577 , H01F41/005 , H02K1/02 , H02K1/04 , H02K1/276 , Y02T10/6217 , Y02T10/641 , Y02T10/7077 , Y10T428/32
摘要： A rare earth sintered magnet 10 including a magnet body that includes a rare earth compound, and a protective layer on the magnet body, having a first layer and a second layer in that order from the magnet body side, wherein the surface portion of the magnet body has a higher heavy rare earth element content than the interior of the magnet body that is surrounded by the surface portion, the first layer includes a rare earth oxide, the mass ratio of the heavy rare earth element being 1 or greater with respect to the light rare earth element, and the second layer includes an oxide containing iron and/or boron which is different from the rare earth oxide, the second layer having a lower rare earth oxide content than the first layer.
摘要翻译： 包括稀土类化合物的磁体和磁铁体上的保护层的稀土类烧结磁体10具有从磁铁体侧依次的第一层和第二层，其中磁体的表面部分 本体具有比由表面部包围的磁体的内部更高的重稀土元素含量，第一层包括稀土类氧化物，重稀土类元素的质量比相对于 轻稀土元素，第二层包括与稀土氧化物不同的含有铁和/或硼的氧化物，第二层具有比第一层低的稀土氧化物含量。
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9.发明申请RARE EARTH SINTERED MAGNET, METHOD FOR PRODUCING THE SAME, MOTOR, AND AUTOMOBILE 有权稀土烧结磁铁，其制造方法，电机和汽车公开(公告)号：US20130026870A1
公开(公告)日：2013-01-31
申请号：US13637247
申请日：2011-03-30
CPC分类号： H02K1/02 , C22C38/005 , C22C38/14 , H01F1/0577 , H01F41/0293 , H02K21/16
摘要： Provided is a rare earth sintered magnet 10 comprising a group of main phase grains 2 each composed of an R-T-B-based rare earth magnet comprising a core 4 and a shell 6 covering the core 4, wherein a thickness of the shell 6 is 500 nm or less, R includes a light rare earth element and a heavy rare earth element, and a Zr compound 8 is present in a grain boundary phase 7 of the group of main phase grains 2 and/or the shell 6. Also provided are a motor comprising the rare earth sintered magnet 10 and an automobile comprising the motor.
摘要翻译： 本发明提供一种稀土类烧结磁体10，其包含一组主相颗粒2，每个主相颗粒2由包括芯4的RTB基稀土磁体和覆盖芯4的壳体6组成，其中壳体6的厚度为500nm或 较少的R包括轻稀土元素和重稀土元素，并且Zr化合物8存在于主相晶粒2和/或壳6组的晶界相7中。还提供了一种马达，其包括 稀土烧结磁体10和包含电动机的汽车。
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10.发明授权Rare earth sintered magnet, method for producing the same, motor, and automobile 有权稀土烧结磁体，制造方法，电动机，汽车等公开(公告)号：US09350203B2
公开(公告)日：2016-05-24
申请号：US13637247
申请日：2011-03-30
CPC分类号： H02K1/02 , C22C38/005 , C22C38/14 , H01F1/0577 , H01F41/0293 , H02K21/16
摘要： Provided is a rare earth sintered magnet 10 comprising a group of main phase grains 2 each composed of an R-T-B-based rare earth magnet comprising a core 4 and a shell 6 covering the core 4, wherein a thickness of the shell 6 is 500 nm or less, R includes a light rare earth element and a heavy rare earth element, and a Zr compound 8 is present in a grain boundary phase 7 of the group of main phase grains 2 and/or the shell 6. Also provided are a motor comprising the rare earth sintered magnet 10 and an automobile comprising the motor.
摘要翻译： 本发明提供一种稀土类烧结磁体10，其包含一组主相颗粒2，每个主相颗粒2由包括芯4的RTB基稀土磁体和覆盖芯4的壳体6组成，其中壳体6的厚度为500nm或 较少的R包括轻稀土元素和重稀土元素，并且Zr化合物8存在于主相晶粒2和/或壳6组的晶界相7中。还提供了一种马达，其包括 稀土烧结磁体10和包含电动机的汽车。
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