公开(公告)号：US20130087248A1

公开(公告)日：2013-04-11

申请号：US13805466

申请日：2011-07-12

申请人： Futoshi Kuniyoshi

发明人： Futoshi Kuniyoshi

IPC分类号： H01F41/02 ,  H01F7/02

CPC分类号： H01F41/0293 ,  B22F3/24 ,  C22C1/02 ,  C22C27/00 ,  C22C33/0278 ,  C22C38/00 ,  C22C38/005 ,  H01F1/0577 ,  H01F7/02

摘要： A method for producing a sintered R-T-B based magnet includes the steps of: providing a sintered R-T-B based magnet body 1; providing an RH diffusion source including a heavy rare-earth element RH (which is at least one of Dy and Tb) and 30 mass % to 80 mass % of Fe; loading the sintered R-T-B based magnet body 1 and the RH diffusion source 2 into a processing chamber 3 so that the magnet body 1 and the diffusion source 2 are movable relative to each other and are readily brought close to, or in contact with, each other; and performing an RH diffusion process in which the sintered magnet body 1 and the RH diffusion source 2 are heated to a processing temperature of more than 850° C. through 1000° C. while being moved either continuously or discontinuously in the processing chamber.

摘要翻译： 制造R-T-B系烧结磁体的方法包括以下步骤：提供R-T-B系烧结磁体1; 提供包括重稀土元素RH（其为Dy和Tb中的至少一种）和30质量％至80质量％的Fe的RH扩散源; 将烧结的RTB基磁体1和RH扩散源2加载到处理室3中，使得磁体1和扩散源2可相对于彼此移动并且容易彼此接近或接触 ; 并且在处理室中连续地或不连续地移动时，进行将烧结磁体1和RH扩散源2加热到850℃以上1000℃以下的加工温度的RH扩散工序。

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。

公开(公告)号：US20130049910A1

公开(公告)日：2013-02-28

申请号：US13637424

申请日：2011-03-28

申请人： Satoshi Tanaka ,  Fumitaka Baba ,  Makoto Iwasaki ,  Chikara Ishizaka

发明人： Satoshi Tanaka ,  Fumitaka Baba ,  Makoto Iwasaki ,  Chikara Ishizaka

IPC分类号： H01F7/02 ,  H01F41/02 ,  C23C8/10

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。

公开(公告)号：US08377233B2

公开(公告)日：2013-02-19

申请号：US13033943

申请日：2011-02-24

申请人： Hajime Nakamura ,  Koichi Hirota ,  Takehisa Minowa

发明人： Hajime Nakamura ,  Koichi Hirota ,  Takehisa Minowa

IPC分类号： H01F1/03 ,  H01F1/00 ,  H01F1/04 ,  H01F1/14 ,  B22F3/00 ,  C04B35/64

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 comprises 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 then 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 result high performance, compact or thin permanent magnet has 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 从包括Y和Sc的稀土元素中选出的更多的元素是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，然后热处理 磁体形式和粉末，其温度等于或低于磁体在真空或惰性气体中的烧结温度。 结果，高性能，紧凑或薄的永磁体在高生产率下具有高剩磁和矫顽力。

公开(公告)号：US20130026870A1

公开(公告)日：2013-01-31

申请号：US13637247

申请日：2011-03-30

申请人： Fumitaka Baba ,  Satoshi Tanaka ,  Makoto Iwasaki ,  Chikara Ishizaka

发明人： Fumitaka Baba ,  Satoshi Tanaka ,  Makoto Iwasaki ,  Chikara Ishizaka

IPC分类号： H01F7/02 ,  H02K21/00 ,  B05D5/00

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。

公开(公告)号：US08269392B2

公开(公告)日：2012-09-18

申请号：US12893772

申请日：2010-09-29

申请人： Yuhito Doi ,  Takehisa Minowa ,  Hajime Nakamura ,  Koichi Hirota

发明人： Yuhito Doi ,  Takehisa Minowa ,  Hajime Nakamura ,  Koichi Hirota

IPC分类号： H02K21/12

CPC分类号： H02K1/276 ,  H01F1/0577 ,  H01F41/0293 ,  H02K1/278

摘要： A permanent magnet rotary machine comprises a rotor comprising a rotor core and a plurality of permanent magnet segments embedded in the rotor core and a stator having a plurality of coils and disposed to define a gap with the rotor, or a permanent magnet rotary machine comprises a rotor comprising a rotor core and a plurality of permanent magnet segments mounted on the surface of the rotor core and a stator having a plurality of coils and disposed to define a gap with the rotor. In the rotor, each permanent magnet segment is an assembly of divided permanent magnet pieces, the coercive force near the surface of the magnet piece is higher than that in the interior of the magnet piece, and the assembly allows for electrical conduction between the magnet pieces.

摘要翻译： 永磁旋转机械包括转子，转子包括转子芯和嵌入在转子芯中的多个永磁体段，以及具有多个线圈并且设置成与该转子间隔开的定子，或者永磁旋转机械包括： 转子，其包括转子芯和安装在转子芯的表面上的多个永磁体段和具有多个线圈并设置成与转子限定间隙的定子。 在转子中，每个永磁体段是分开的永久磁体块的组件，靠近磁体片表面的矫顽力高于磁片内部的矫顽力，并且组件允许磁体片之间的导电 。

公开(公告)号：US20120205573A1

公开(公告)日：2012-08-16

申请号：US13453634

申请日：2012-04-23

申请人： Matahiro KOMURO ,  Yuichi Satsu ,  Yoshii Morishita ,  Shigeaki Funyu ,  Mitsuo Katayose

发明人： Matahiro KOMURO ,  Yuichi Satsu ,  Yoshii Morishita ,  Shigeaki Funyu ,  Mitsuo Katayose

IPC分类号： H01F1/01

CPC分类号： H02K1/02 ,  H01F1/0577 ,  H01F41/0293 ,  H02K1/2766

摘要： An R—Fe—B sintered magnet has a structure including main phase crystal grains and a grain boundary area surrounding the crystal grains. The sintered magnet includes fluorine and a specified metal element selected from elements belonging to Group 2 through Group 16 of periodic table excepting the rare earth element, carbon and boron. The fluorine has a higher concentration in a region closer to a magnet surface than in the center. The specified element also has a higher concentration in the region closer to the surface. The sintered magnet includes oxyfluoride containing carbon, Dy and the metal element in a grain boundary area region at a distance of 1 μm or greater from the magnet surface, and the carbon has a higher concentration than the concentration of the metal element in a region at a distance of 1 μm to 500 μm from the magnet surface.

摘要翻译： R-Fe-B烧结磁体具有包括主相晶粒和围绕晶粒的晶界面的结构。 烧结磁体包括除了稀土元素，碳和硼之外的选自元素周期表第2族至第16族的元素中的氟和特定金属元素。 在比中心更靠近磁体表面的区域中，氟具有较高的浓度。 指定的元件在更靠近表面的区域中也具有较高的浓度。 烧结磁体包括在磁体表面上距离为1μm以上的晶界区域中含有碳，Dy和金属元素的氟化氢，并且碳的浓度高于金属元素的浓度 与磁体表面的距离为1μm至500μm。

公开(公告)号：US08187392B2

公开(公告)日：2012-05-29

申请号：US12666323

申请日：2008-07-01

申请人： Koshi Yoshimura ,  Hideyuki Morimoto ,  Tomoori Odaka

发明人： Koshi Yoshimura ,  Hideyuki Morimoto ,  Tomoori Odaka

IPC分类号： H01F1/057

CPC分类号： C22C38/005 ,  B22F3/24 ,  B22F2003/248 ,  B22F2999/00 ,  C22C33/0278 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0293 ,  B22F2207/01 ,  B22F2201/20

摘要： In an R—Fe—B based rare-earth sintered magnet according to the present invention, at a depth of 20 μm under the surface of its magnet body, crystal grains of an R2Fe14B type compound have an (RL1-xRHx)2Fe14B (where 0.2≦x≦0.75) layer with a thickness of 1 nm to 2 μm in their outer periphery. In this case, the light rare-earth element RL is at least one of Nd and Pr, and the heavy rare-earth element RH is at least one element selected from the group consisting of Dy, Ho and Tb.

摘要翻译： 在根据本发明的R-Fe-B系稀土烧结磁体中，在其磁体表面的20μm深处，R2Fe14B型化合物的晶粒具有（RL1-xRHx）2Fe14B（其中 0.2＆nlE; x＆nlE; 0.75）层，其外周的厚度为1nm〜2μm。 在这种情况下，轻稀土元素RL是Nd和Pr中的至少一种，重稀土元素RH是选自Dy，Ho和Tb中的至少一种元素。

公开(公告)号：US08177922B2

公开(公告)日：2012-05-15

申请号：US12671915

申请日：2008-09-02

申请人： Tomoori Odaka ,  Hideyuki Morimoto ,  Kohshi Yoshimura ,  Shigeru Takaki

发明人： Tomoori Odaka ,  Hideyuki Morimoto ,  Kohshi Yoshimura ,  Shigeru Takaki

IPC分类号： H01F1/057

CPC分类号： H01F1/0577 ,  B22F2999/00 ,  C22C33/0257 ,  C22C38/005 ,  C22C2202/02 ,  H01F41/0293 ,  B22F2207/01

摘要： An R—Fe—B based anisotropic sintered magnet according to the present invention has, as a main phase, an R2Fe14B type compound that includes a light rare-earth element RL (which is at least one of Nd and Pr) as a major rare-earth element R, and also has a heavy rare-earth element RH (which is at least one element selected from the group consisting of Dy and Tb). In the crystal lattice of the main phase, the c-axis is oriented in a predetermined direction. The magnet includes a portion in which at least two peaks of diffraction are observed within a 2θ range of 60.5 degrees to 61.5 degrees when an X-ray diffraction measurement is carried out using a CuK α ray on a plane that is located at a depth of 500 μm or less under a pole face of the magnet and that is parallel to the pole face.

摘要翻译： 本发明的R-Fe-B系各向异性烧结磁体作为主相，具有稀土元素RL（Nd和Pr中的至少一种）作为主要稀有元素的R2Fe14B型化合物 - 地基元素R，并且还具有重稀土元素RH（其是选自Dy和Tb中的至少一种元素）。 在主相的晶格中，c轴沿预定方向取向。 磁体包括在2θ范围内观察到至少两个衍射峰的部分; 在使用CuKα射线进行X射线衍射测定的情况下，在位于磁铁的极面的500μm以下的平面的平面上并且平行于极的X射线衍射测定的范围为60.5〜61.5度 面对。

公开(公告)号：US08142573B2

公开(公告)日：2012-03-27

申请号：US12595293

申请日：2008-04-11

申请人： Hiroya Kobayashi ,  Futoshi Kuniyoshi

发明人： Hiroya Kobayashi ,  Futoshi Kuniyoshi

IPC分类号： H01F1/057

CPC分类号： H01F41/0266 ,  B22F7/02 ,  B22F2999/00 ,  C21D6/00 ,  C21D8/1211 ,  C22C33/0278 ,  C22C38/005 ,  C22C2202/02 ,  H01F1/0577 ,  H01F7/021 ,  H01F41/0293 ,  B22F2207/01

摘要： An R-T-B based sintered magnet includes both a light rare-earth element RL (which is at least one of Nd and Pr) and a heavy rare-earth element RH (which is at least one of Dy and Tb) and Nd2Fe14B type crystals as a main phase. The magnet has a first region, which includes either the heavy rare-earth element RH in a relatively low concentration or no heavy rare-earth elements RH at all, and a second region, which includes the heavy rare-earth element RH in a relatively high concentration. The first and second regions are combined together by going through a sintering process.

摘要翻译： RTB型烧结磁体包括轻稀土元素RL（其为Nd和Pr中的至少一种）和重稀土元素RH（其为Dy和Tb中的至少一种）和Nd 2 Fe 14 B型晶体作为 主要阶段 磁体具有第一区域，其包括相对低浓度的重稀土元素RH或根本没有重稀土元素RH，第二区域包括相对较重的稀土元素RH 高浓度 通过烧结过程将第一和第二区域组合在一起。