公开(公告)号：US20150235747A1

公开(公告)日：2015-08-20

申请号：US14429447

申请日：2013-10-02

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Noritaka Miyamoto ,  Tetsuya Shoji ,  Kazuaki Haga

IPC分类号： H01F1/057 ,  B22F3/12 ,  B22F3/26 ,  H01F41/02

CPC分类号： H01F1/0577 ,  B22F3/12 ,  B22F3/26 ,  C22C28/00 ,  C22C33/02 ,  C22C2202/02 ,  H01F41/0266 ,  H01F41/0293

摘要： A rare-earth sintered magnet including a relatively large main phase, and method for manufacturing same. The rare-earth sintered magnet having excellent coercive-force performance that can be manufactured without using heavy rare-earth elements such as Dy, and including: a RE-T-B main phase C (RE: Nd or Pr, T: Fe or Fe and a part thereof substituted with Co), and a grain boundary phase B surrounding the main phase C, the grain boundary phase including the RE element and the T element. The T element at the grain boundary phase B has density of 60 at % or less, and the grain boundary B has a thickness decreasing from a surface S of the rare-earth sintered magnet M to an inside thereof, and the grain boundary phase B at an area SA of a surface layer of the rare-earth sintered magnet M has an average thickness of 10 nm or more.

摘要翻译： 包括相对较大的主相的稀土类烧结磁体及其制造方法。 具有优异的矫顽力性能的稀土烧结磁体，其可以在不使用诸如Dy的重稀土元素的情况下制造，并且包括：RE-TB主相C（RE：Nd或Pr，T：Fe或Fe和 其部分被Co取代）和包围主相C的晶界相B，包括RE元素和T元素的晶界相。 晶界相B的T元素的密度为60原子％以下，晶界B的厚度从稀土类烧结磁体M的表面S向内部减小，晶界B 稀土类烧结磁体M的表层的区域SA的平均厚度为10nm以上。

公开(公告)号：US20150211139A1

公开(公告)日：2015-07-30

申请号：US14424707

申请日：2013-08-30

申请人： Shin-Etsu Chemical Co., Ltd.

发明人： Yoshifumi Nagasaki ,  Masanobu Shimao

IPC分类号： C25D7/00 ,  H01F1/053 ,  H01F1/057 ,  C21D1/28

CPC分类号： C25D7/001 ,  B22F3/24 ,  B22F2003/242 ,  B22F2003/248 ,  C21D1/28 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/06 ,  C22C38/14 ,  C25D13/02 ,  C25D13/22 ,  H01F1/0536 ,  H01F1/057 ,  H01F1/0577 ,  H01F41/0293

摘要： A production method for a rare earth permanent magnet, wherein: a sintered magnet body comprising an R1—Fe—B composition (R1 represents one or more elements selected from among rare earth elements, including Y and Sc) is immersed in an electrodeposition liquid comprising a slurry obtained by dispersing a powder containing an R2 fluoride (R2 represents one or more elements selected from among rare earth elements, including Y and Sc) in water; an electrodeposition process is used to coat the powder onto the surface of the sintered magnet body; and, in the state in which the powder is present on the surface of the magnet body, the magnet body and the powder are subjected to a heat treatment in a vacuum or an inert gas at a temperature equal to or less than the sintering temperature of the magnet.

摘要翻译： 一种稀土类永磁体的制造方法，其特征在于，将包含R1-Fe-B组合物（R1表示选自稀土元素，Y和Sc中的一种或多种元素）的烧结磁体浸渍在电沉积液中，所述电沉积液包含 通过将含有R 2氟化物（R2表示选自稀土元素，包括Y和Sc的一种或多种元素）的粉末分散在水中而获得的浆料; 使用电沉积工艺将粉末涂覆到烧结磁体的表面上; 并且在磁体表面存在粉末的状态下，将磁体和粉末在真空或惰性气体中以等于或小于烧结温度的温度进行热处理 磁铁。

公开(公告)号：US20150179320A1

公开(公告)日：2015-06-25

申请号：US14414729

申请日：2013-09-05

申请人： Mitsubishi Electric Corporation

发明人： Kimiyasu Furusawa ,  Yoshikazu Ugai ,  Hiroyuki Akita

IPC分类号： H01F1/053 ,  H02K1/27 ,  H02K1/02 ,  B22F3/03 ,  H01F41/02 ,  B22F3/00 ,  B22F5/00 ,  B22F7/02 ,  B22F7/00 ,  H01F7/02 ,  B22F3/12

CPC分类号： H01F1/0536 ,  B22F3/003 ,  B22F3/004 ,  B22F3/02 ,  B22F3/03 ,  B22F3/12 ,  B22F5/00 ,  B22F7/008 ,  B22F7/02 ,  B30B11/025 ,  B30B15/302 ,  C22C38/002 ,  C22C38/005 ,  H01F7/02 ,  H01F41/0266 ,  H01F41/0273 ,  H01F41/0293 ,  H02K1/02 ,  H02K1/27 ,  H02K1/278 ,  H02K15/03

摘要： In a production method for permanent magnet, a magnetic powder is loaded into a cavity formed in a groove shape whose longitudinal direction horizontally extends. A loading step of loading the magnetic powder includes a first loading step of loading, of the magnetic powder, a first magnetic powder containing no heavy rare earth element or containing a heavy rare earth element, and a second loading step of loading, of the magnetic powder, a second magnetic powder having a higher content rate of heavy rare earth element than that of the first magnetic powder, at a predetermined position in the cavity.

摘要翻译： 在永磁体的制造方法中，将磁性粉末装载到形成为长边方向水平延伸的槽状的空腔中。 负载磁性粉末的装载步骤包括加载磁性粉末的不含重稀土元素或含有重稀土元素的第一磁性粉末的第一加载步骤和负载磁性粉末的第二加载步骤 粉末，具有比第一磁性粉末的重稀土元素含量高的第二磁粉在空腔中的预定位置。

公开(公告)号：US09053846B2

公开(公告)日：2015-06-09

申请号：US13499338

申请日：2011-03-28

申请人： Izumi Ozeki ,  Katsuya Kume ,  Keisuke Hirano ,  Tomohiro Omure ,  Keisuke Taihaku ,  Takashi Ozaki

发明人： Izumi Ozeki ,  Katsuya Kume ,  Keisuke Hirano ,  Tomohiro Omure ,  Keisuke Taihaku ,  Takashi Ozaki

IPC分类号： H01F1/057 ,  H01F1/08 ,  H01F41/02 ,  C22C38/00 ,  C22C33/02 ,  B22F9/04

CPC分类号： H01F1/086 ,  B22F2009/042 ,  B22F2998/10 ,  B22F2999/00 ,  C22C33/0278 ,  C22C38/002 ,  H01F1/0572 ,  H01F1/0577 ,  H01F41/0266 ,  H01F41/0293 ,  B22F9/04 ,  B22F3/02 ,  B22F3/1017 ,  B22F2201/013

摘要： There are provided a permanent magnet and a manufacturing method thereof enabling carbon content contained in magnet particles to be reduced in advance before sintering even when wet milling is employed. Coarsely-milled magnet powder is further milled by a bead mill in a solvent together with an organometallic compound expressed with a structural formula of M−(OR)x (M includes at least one of neodymium, praseodymium, dysprosium and terbium, each being a rare earth element, R represents a substituent group consisting of a straight-chain or branched-chain hydrocarbon, x represents an arbitrary integer) so as to uniformly adhere the organometallic compound to particle surfaces of the magnet powder. Thereafter, a compact body of compacted magnet powder is held for several hours in hydrogen atmosphere at 200 through 900 degrees Celsius to perform hydrogen calcination process. Thereafter, through sintering process, a permanent magnet 1 is manufactured.

摘要翻译： 提供永磁体及其制造方法，即使在使用湿磨时也能预先在烧结前减少磁体颗粒中含有的碳含量。 通过珠磨机在溶剂中与结构式M-（OR）x表示的有机金属化合物进一步研磨粗粉末磁体粉末（M包括钕，镨，镝和铽中的至少一种，各自为 稀土元素，R表示由直链或支链烃构成的取代基，x表示任意的整数），以使有机金属化合物均匀地附着在磁铁粉末的粒子表面。 之后，在200〜900摄氏度的氢气氛中，将紧凑的致密体磁体保持数小时，进行氢煅烧。 然后，通过烧结工序制造永久磁铁1。

公开(公告)号：US09028624B2

公开(公告)日：2015-05-12

申请号：US14113961

申请日：2012-12-27

申请人： Intermetallics Co., Ltd.

发明人： Masato Sagawa ,  Tetsuhiko Mizoguchi

IPC分类号： H01F7/02 ,  H01F1/057 ,  H01F41/02 ,  B22F1/00 ,  H01F1/055 ,  C22C33/02 ,  B22F9/02

CPC分类号： H01F7/02 ,  B22F1/0011 ,  B22F9/023 ,  C22C33/02 ,  H01F1/0557 ,  H01F1/057 ,  H01F1/0577 ,  H01F41/0266 ,  H01F41/0293

摘要： Provided is a NdFeB sintered magnet which can be used in the grain boundary diffusion method as a base material in which RH can be easily diffused through the rare-earth rich phase and which itself has a high coercive force, a high maximum energy product and a high squareness ratio, as well as a method for producing such a magnet. A NdFeB system sintered has an average grain size of the main-phase grains magnet is equal to or smaller than 4.5 μm, the carbon content of the entire NdFeB system sintered magnet is equal to or lower than 1000 ppm, and the percentage of the total volume of a carbon rich phase in a rare-earth rich phase at a grain-boundary triple point in the NdFeB system sintered magnet to the total volume of the rare-earth rich phase is equal to or lower than 50%.

摘要翻译： 本发明提供一种NdFeB烧结磁体，其可以用作晶界扩散法中的基底材料，其中RH容易通过富稀土相扩散，本身具有高的矫顽力，高的最大能量积和 高矩形比，以及这种磁体的制造方法。 NdFeB系烧结后的主晶粒磁铁的平均粒径为4.5μm以下，NdFeB系烧结磁铁整体的碳含量为1000ppm以下， 在NdFeB系烧结磁体中的晶界三重点处的富稀相中的富碳相的体积相对于富稀土相的总体积为50％以下。

公开(公告)号：US20150097643A1

公开(公告)日：2015-04-09

申请号：US14502056

申请日：2014-09-30

申请人： Shinobu TAKAGI

发明人： Shinobu TAKAGI

IPC分类号： H01F1/01 ,  H01F7/02 ,  H01F41/02 ,  C22C38/00 ,  B23K20/02

CPC分类号： H01F1/01 ,  B23K20/02 ,  B23K20/026 ,  B23K20/16 ,  B23K20/233 ,  B23K2101/06 ,  B23K2103/08 ,  B23K2103/50 ,  C22C38/002 ,  C22C38/005 ,  C22C2202/02 ,  H01F1/0576 ,  H01F1/0577 ,  H01F7/02 ,  H01F7/021 ,  H01F41/0293

摘要： Provided is a combined type RFeB-based magnet, including: a first unit magnet; a second unit magnet; and an interface material that bonds the first unit magnet and the second unit magnet, in which the first unit magnet and the second unit magnet are RFeB-based magnets containing a light rare earth element RL that is at least one element selected from the group consisting of Nd and Pr, Fe, and B, in which the interface material contains at least one compound selected from the group consisting of a carbide, a hydroxide, and an oxide of the light rare earth element RL, and in which an amount of a heavy rare earth element RH that is at least one element selected from the group consisting of Dy, Tb and Ho in the second unit magnet is more than that in the first unit magnet.

摘要翻译： 提供了一种组合型RFeB基磁体，包括：第一单元磁体; 第二单位磁体; 以及键合第一单位磁体和第二单位磁体的界面材料，其中第一单位磁体和第二单位磁体是包含轻稀土元素RL的RFeB基磁体，其是选自以下的至少一种元素： 的Nd和Pr，Fe和B，其中界面材料含有至少一种选自轻稀土元素RL的碳化物，氢氧化物和氧化物的化合物，其中一定量的 在第二单位磁体中，选自Dy，Tb和Ho中的至少一种元素的重稀土元素RH大于第一单位磁体中的重稀土元素RH。

公开(公告)号：US20140314612A1

公开(公告)日：2014-10-23

申请号：US14257512

申请日：2014-04-21

申请人： SHOWA DENKO K.K.

发明人： Kenichiro NAKAJIMA ,  Akifumi MURAOKA ,  Takashi YAMAZAKI

IPC分类号： H01F1/053 ,  H01F41/02

CPC分类号： H01F1/0536 ,  B22F2998/10 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  C22C38/42 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0266 ,  H01F41/0293 ,  B22F3/02 ,  B22F3/10

摘要： A method of manufacturing an R-T-B rare earth sintered magnet includes a process of disposing and sintering a compact of a first alloy powder and an alloy material of a second alloy in a chamber of a sintering furnace. The first alloy consists of R which represents a rare earth element, T which represents a transition metal essentially containing Fe, a metal element M which represents Al and/or Ga, B, Cu, and inevitable impurities. The first alloy contains 11 at % to 17 at % of R, 4.5 at % to 6 at % of B, 0 at % to 1.6 at % of M, and T as the balance, and Dy content in all of the rare earth elements is 0 at % to 29 at %. The second alloy consists of R which represents a rare earth element, T which represents a transition metal essentially containing Fe, a metal element M which represents Al and/or Ga, B, Cu, and inevitable impurities. The second alloy contains 11 at % to 20 at % of R, 4.5 at % to 6 at % of B, and 0 at % to 1.6 at % of M, and T as the balance, and Dy content in all of the rare earth elements is 0 at % to 29 at %.

摘要翻译： R-T-B系稀土类烧结磁体的制造方法包括在烧结炉的室内配置并烧结第一合金粉末和第二合金的合金材料的坯料的工序。 第一合金由代表稀土元素的R表示，T表示基本上含有Fe的过渡金属，代表Al和/或Ga，B，Cu和不可避免的杂质的金属元素M. 第一合金含有11原子％至17原子％的R，4.5原子％至6原子％的B，0原子％至1.6原子％的M，T为余量，所有稀土元素中的Dy含量 为0 at％至29at％。 第二合金由代表稀土元素的R表示，T表示基本上含有Fe的过渡金属，代表Al和/或Ga，B，Cu和不可避免的杂质的金属元素M. 第二合金含有11原子％〜20原子％的R，4.5原子％〜6原子％的B，0为0原子％〜1.6原子％的M，余量为T，所有稀土中的Dy含量 元素为0 at％至29 at％。

公开(公告)号：US08823478B2

公开(公告)日：2014-09-02

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

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：US20140159528A1

公开(公告)日：2014-06-12

申请号：US13851369

申请日：2013-03-27

申请人： HYUNDAI MOTOR COMPANY

发明人： Kyoung Bum Kim ,  Sang Hoon Moon ,  Hyoung Jun Cho ,  Jung Shik Kim

IPC分类号： H02K1/02

CPC分类号： H02K1/02 ,  H01F41/0293

摘要： Disclosed herein is a rotor permanent magnet apparatus for a drive motor based on temperature distribution. The permanent magnet may enhance coercivity without a substantial decrease in magnetic flux density Br by applying a grain boundary diffusion process of diffusing dysprosium on the surface of the permanent magnet based on the temperature distribution of the permanent magnet

摘要翻译： 本文公开了一种基于温度分布的用于驱动电动机的转子永磁体装置。 基于永久磁铁的温度分布，永磁体可以通过在永磁体的表面上施加扩散镝的晶界扩散过程而提高矫顽力，而不会明显降低磁通密度Br

公开(公告)号：US20140132377A1

公开(公告)日：2014-05-15

申请号：US14126770

申请日：2012-07-06

申请人： Kenichiro Nakajima ,  Takashi Yamazaki

发明人： Kenichiro Nakajima ,  Takashi Yamazaki

IPC分类号： H01F1/01

CPC分类号： H01F1/0536 ,  B22F3/16 ,  B22F3/24 ,  B22F2003/248 ,  C21D6/00 ,  C22C33/0278 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/06 ,  C22C38/10 ,  C22C38/16 ,  H01F1/01 ,  H01F1/0577 ,  H01F1/058 ,  H01F41/0293 ,  H02K1/02

摘要： An alloy for R-T-B-based rare earth sintered magnets which contains R which is a rare earth element; T which is a transition metal essentially containing Fe; a metallic element M containing one or more metals selected from Al, Ga and Cu; B and inevitable impurities, in which R accounts for 13 at % to 15 at %, B accounts for 4.5 at % to 6.2 at %, M accounts for 0.1 at % to 2.4 at %, T accounts for balance, a proportion of Dy in all rare earth elements is in a range of 0 at % to 65 at %, and the following Formula 1 is satisfied, 0.0049Dy+0.34≦B/TRE≦0.0049Dy+0.36  Formula 1 wherein Dy represents a concentration (at %) of a Dy element, B represents a concentration (at %) of a boron element, and TRE represents a concentration (at %) of all the rare earth elements.

摘要翻译： 用于R-T-B系稀土烧结磁体的合金，其含有作为稀土元素的R; T是基本含有Fe的过渡金属; 含有选自Al，Ga和Cu中的一种或多种金属的金属元素M; B和不可避免的杂质，其中R占13原子％至15原子％，B占4.5原子％至6.2原子％，M占0.1原子％至2.4原子％，T占余量，Dy的比例 所有的稀土元素都在0at％至65at％的范围内，满足下列公式1：0.0049Dy + 0.34＆amp; NlE; B / TRE＆nlE; 0.0049Dy + 0.36式1其中Dy表示浓度（at％） 的Dy元素，B表示硼元素的浓度（at％），TRE表示所有稀土元素的浓度（at％）。