公开(公告)号：US20110128106A1

公开(公告)日：2011-06-02

申请号：US12929487

申请日：2011-01-28

Applicant: Katsuhiko Mori ,  Ryoji Nakayama ,  Muneaki Watanabe ,  Koichiro Morimoto ,  Tetsurou Tayu ,  Yoshio Kawashita ,  Makoto Kano

Inventor： Katsuhiko Mori ,  Ryoji Nakayama ,  Muneaki Watanabe ,  Koichiro Morimoto ,  Tetsurou Tayu ,  Yoshio Kawashita ,  Makoto Kano

IPC: H01F7/02

CPC classification number: H01F1/0572 ,  C22C38/005 ,  C22C38/10 ,  H01F1/0573 ,  H01F10/126 ,  H01F41/0266 ,  Y10T428/32 ,  Y10T428/325

Abstract: This rare earth magnet having high strength and high electrical resistance has a structure including an R—Fe—B-based rare earth magnet particles 18 which are enclosed with a high strength and high electrical resistance composite layer 12. The high strength and high electrical resistance composite layer 12 is constituted from a glass-based layer 16 that has a structure comprising a glass phase or R oxide particles 13 dispersed in glass phase, and R oxide particle-based mixture layers 17 that are formed on both sides of the glass-based layer 16 and contain an R-rich alloy phase 14 which contains 50 atomic % or more of R in the grain boundary of the R oxide particles.

Abstract translation: 这种具有高强度和高电阻的稀土磁体具有包含用高强度和高电阻复合层12包围的R-Fe-B系稀土磁体颗粒18的结构。高强度和高电阻 复合层12由具有分散在玻璃相中的玻璃相或R氧化物粒子13的结构的玻璃基层16和形成在玻璃基的两面的R氧化物粒子系混合层17构成 层16，并且含有在R氧化物粒子的晶界中含有50原子％以上的R的富R相合金相14。

公开(公告)号：US07608153B2

公开(公告)日：2009-10-27

申请号：US11017010

申请日：2004-12-21

Applicant: Tetsurou Tayu ,  Hideaki Ono ,  Takae Ono, legal representative ,  Yoshio Kawashita ,  Makoto Kano ,  Munekatsu Shimada

Inventor： Tetsurou Tayu ,  Hideaki Ono ,  Yoshio Kawashita ,  Makoto Kano ,  Munekatsu Shimada

IPC: H01F1/053 ,  H01F1/057

CPC classification number: H01F1/0576 ,  H01F1/08 ,  H02K1/02 ,  H02K1/278

Abstract: A rare earth magnet includes rare earth magnet particles; and amorphous and/or crystalline terbium oxide present at the boundary of the rare earth magnet particles and represented by the formula: TbOn, wherein 1.5

Abstract translation: 稀土磁体包括稀土磁体颗粒; 以及存在于稀土磁体颗粒边界并由下式表示的无定形和/或结晶铽氧化物：TbOn，其中1.5

公开(公告)号：US20080199715A1

公开(公告)日：2008-08-21

申请号：US12081318

申请日：2008-04-15

Applicant: Munekatsu Shimada ,  Hideaki Ono ,  Takae Ono ,  Makoto Kano ,  Tetsurou Tayu

Inventor： Munekatsu Shimada ,  Hideaki Ono ,  Takae Ono ,  Makoto Kano ,  Tetsurou Tayu

IPC: B22F3/12 ,  B02C17/00 ,  B22F1/00

CPC classification number: B82Y25/00 ,  H01F1/0579 ,  H01F41/0273 ,  Y10T428/12014

Abstract: A Nd—Fe—B type anisotropic exchange spring magnet is produced by a method of obtaining powder of a Nd—Fe—B type rare earth magnet alloy which comprises hard magnetic phases and soft magnetic phases wherein a minimum width of the soft magnetic phases is smaller than or equal to 1 μm and a minimum distance between the soft magnetic phases is greater than or equal to 0.1 μm, obtaining a compressed powder body by compressing the powder, and obtaining the Nd—Fe—B type anisotropic exchange spring magnet by sintering the compressed powder body using a discharge plasma sintering unit.

公开(公告)号：US06984271B2

公开(公告)日：2006-01-10

申请号：US10809422

申请日：2004-03-26

Applicant: Tetsurou Tayu ,  Takae Ono, legal representative ,  Makoto Kano ,  Munekatsu Shimada ,  Yoshio Kawashita ,  Takeshi Yamauchi

Inventor： Hideaki Ono, deceased

IPC: H01F1/053 ,  H01F1/057

CPC classification number: H01F1/09 ,  H01F1/053 ,  H01F1/0575 ,  H01F41/0273 ,  H02K1/02 ,  H02K1/278

Abstract: A rare earth magnet to be used in a motor. The rare earth magnet comprises rare earth magnet particles. Additionally, a rare earth oxide is present among the rare earth magnet particles, the rare earth oxide being represented by the following general formula (I): R2xR′2(1−x)O3  (I) where each of R and R′ is one element selected from the group consisting of yttrium (Y), lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb) and lutetium (Lu), and 0

Abstract translation: 用于电机的稀土磁铁。 稀土磁体包括稀土磁体颗粒。 此外，在稀土类磁体颗粒中存在稀土类氧化物，稀土类氧化物由以下通式（I）表示：<？在线式描述=“在线式”末端=“铅” （1-x）O 3（I）<βin-line-formula description =“In-line-formula description” 其中R和R'分别为选自钇（Y），镧（La），铈（Ce），镨（Pr），钕（Nd） ，钐（钐），铕（Eu），钆（Gd），铽（Tb），镝（Dy），钬（Ho），铒（Er），ium（Tm），镱（Yb）和镥（Lu） ，0

公开(公告)号：US07919200B2

公开(公告)日：2011-04-05

申请号：US11449874

申请日：2006-06-09

Applicant: Katsuhiko Mori ,  Ryoji Nakayama ,  Muneaki Watanabe ,  Koichiro Morimoto ,  Tetsurou Tayu ,  Yoshio Kawashita ,  Makoto Kano

Inventor： Katsuhiko Mori ,  Ryoji Nakayama ,  Muneaki Watanabe ,  Koichiro Morimoto ,  Tetsurou Tayu ,  Yoshio Kawashita ,  Makoto Kano

IPC: B32B15/04

CPC classification number: H01F1/0572 ,  C22C38/005 ,  C22C38/10 ,  H01F1/0573 ,  H01F10/126 ,  H01F41/0266 ,  Y10T428/32 ,  Y10T428/325

Abstract: This rare earth magnet having high strength and high electrical resistance has a structure including an R—Fe—B-based rare earth magnet particles 18 which are enclosed with a high strength and high electrical resistance composite layer 12. The high strength and high electrical resistance composite layer 12 is constituted from a glass-based layer 16 that has a structure comprising a glass phase or R oxide particles 13 dispersed in glass phase, and R oxide particle-based mixture layers 17 that are formed on both sides of the glass-based layer 16 and contain an R-rich alloy phase 14 which contains 50 atomic % or more of R in the grain boundary of the R oxide particles.

公开(公告)号：US20070012380A1

公开(公告)日：2007-01-18

申请号：US11441335

申请日：2006-05-26

Applicant: Tetsurou Tayu ,  Hideaki Ono ,  Munekatsu Shimada ,  Makoto Kano ,  Takae Ono

Inventor： Tetsurou Tayu ,  Hideaki Ono ,  Munekatsu Shimada ,  Makoto Kano ,  Takae Ono

IPC: H01F1/08

CPC classification number: H01F1/09 ,  H01F1/0572 ,  H01F41/0293 ,  H02K1/02

Abstract: A rare earth magnet has a sintered body including: rare earth magnet particles; and a rare earth oxide being present between the rare earth magnet particles, the rare earth oxide being represented by a following general formula (I): R2O3   (I) where R is any one of terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium. The rare earth magnet particle is constituted by a cluster of numerous crystal grains, and an electric resistivity of the rare earth magnet is within a range from 26.0 to 75.0 μΩm.

Abstract translation: 稀土磁体具有：稀土类磁铁颗粒; 在稀土类磁体粒子之间存在稀土类氧化物，稀土类氧化物由下述通式（I）表示：＆lt;线内配方说明=“直列式”结束=“铅”？ （I）<？in-line-formula description =“In-line Formulas”end =“tail”？>其中R是 铽，镝，钬，铒，ium，镱和镥。 稀土磁体颗粒由许多晶粒簇组成，稀土磁体的电阻率在26.0至75.0μm的范围内。

公开(公告)号：US20070079904A1

公开(公告)日：2007-04-12

申请号：US10569429

申请日：2004-05-13

Applicant: Katsuhiko Mori ,  Ryoji Nakayama ,  Hideaki Ono ,  Tetsurou Tayu ,  Munekatsu Shimada ,  Makoto Kano ,  Yoshio Kawashita

Inventor： Katsuhiko Mori ,  Ryoji Nakayama ,  Hideaki Ono ,  Tetsurou Tayu ,  Munekatsu Shimada ,  Makoto Kano ,  Yoshio Kawashita

IPC: H01F1/057

CPC classification number: C22C38/005 ,  C22C1/0441 ,  C22C38/10 ,  H01F1/0572 ,  H01F41/0253 ,  Y10T428/2991

Abstract: A rare earth magnet powder has a chemical composition which includes R: 5 to 20% (wherein, R represents one or two or more rare earth elements being inclusive of Y but exclusive of Dy and Tb), one or two of Dy and Tb: 0.01 to 10%, and B: 3 to 20%, with the balance comprising Fe and inevitable impurities; and an average particle diameter of 10 to 1,000 μm, wherein 70% or more of the entire surface of the rare earth magnet powder is covered with a layer being rich in the content of one or two of Dy and Tb and having a thickness of 0.05 to 50 μm.

Abstract translation: 稀土类磁体粉末具有R：5〜20％（其中，R表示一种或两种以上的稀土元素，不包括Dy，不包括Dy和Tb）的化学组成，Dy和Tb中的一种或两种： 0.01〜10％，B：3〜20％，余量由Fe和不可避免的杂质构成; 平均粒径为10〜1000μm，其中，稀土类磁体粉末的整个表面的70％以上的层被Dy和Tb中的1种或2种以上的层积覆盖，厚度为0.05 到50个妈妈

公开(公告)号：US20060292395A1

公开(公告)日：2006-12-28

申请号：US11449874

申请日：2006-06-09

Applicant: Katsuhiko Mori ,  Ryoji Nakayama ,  Muneaki Watanabe ,  Koichiro Morimoto ,  Tetsurou Tayu ,  Yoshio Kawashita ,  Makoto Kano

Inventor： Katsuhiko Mori ,  Ryoji Nakayama ,  Muneaki Watanabe ,  Koichiro Morimoto ,  Tetsurou Tayu ,  Yoshio Kawashita ,  Makoto Kano

IPC: B32B15/00

CPC classification number: H01F1/0572 ,  C22C38/005 ,  C22C38/10 ,  H01F1/0573 ,  H01F10/126 ,  H01F41/0266 ,  Y10T428/32 ,  Y10T428/325

Abstract: This rare earth magnet having high strength and high electrical resistance has a structure including an R—Fe—B-based rare earth magnet particles 18 which are enclosed with a high strength and high electrical resistance composite layer 12. The high strength and high electrical resistance composite layer 12 is constituted from a glass-based layer 16 that has a structure comprising a glass phase or R oxide particles 13 dispersed in glass phase, and R oxide particle-based mixture layers 17 that are formed on both sides of the glass-based layer 16 and contain an R-rich alloy phase 14 which contains 50 atomic % or more of R in the grain boundary of the R oxide particles.

Abstract translation: 这种具有高强度和高电阻的稀土磁体具有包含用高强度和高电阻复合层12包围的R-Fe-B系稀土磁体颗粒18的结构。 高强度高电阻复合层12由具有玻璃相或玻璃相分散的R氧化物粒子13的结构的玻璃基层16和形成在玻璃相上的R氧化物粒子系混合层17构成 玻璃基层16的两侧，并且含有在R氧化物粒子的晶界中含有50原子％以上的R的富R相合金相14。

公开(公告)号：US07147686B2

公开(公告)日：2006-12-12

申请号：US10600602

申请日：2003-06-23

Applicant: Tetsurou Tayu ,  Hideaki Ono ,  Munekatsu Shimada ,  Makoto Kano

Inventor： Tetsurou Tayu ,  Hideaki Ono ,  Munekatsu Shimada ,  Makoto Kano

IPC: C22C29/14

CPC classification number: H01F1/09 ,  H01F1/0572 ,  H01F41/0293 ,  H02K1/02

Abstract: A rare earth magnet comprises rare earth magnet particles and a rare earth oxide being present between the rare earth magnet particles. The rare earth oxide is represented by a following general formula (I): R2O3  (I) where R is any one of terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium.

Abstract translation: 稀土磁体包括稀土磁体颗粒和稀土磁体颗粒之间存在的稀土氧化物。 稀土氧化物由以下通式（I）表示：<？in-line-formula description =“In-line Formulas”end =“lead”？> R＆lt; 2＆lt; 其中R是铽，镝，钬，铒，ium，镱和镥中的任何一种，其中R是任意一种铽，镝，镱，镥， 。

公开(公告)号：US07018487B2

公开(公告)日：2006-03-28

申请号：US10295923

申请日：2002-11-18

Applicant: Hideaki Ono ,  Tetsurou Tayu ,  Munekatsu Shimada ,  Makoto Kano

Inventor： Hideaki Ono ,  Tetsurou Tayu ,  Munekatsu Shimada ,  Makoto Kano

IPC: H01F1/057

CPC classification number: B82Y25/00 ,  H01F1/057 ,  H01F1/0579 ,  H02K1/02

Abstract: An exchange-spring magnet is prepared using a magnet alloy containing Ta and C in addition to Nd, Fe and B. This exchange-spring magnet uses the magnet alloy prepared by a liquid quenching method or a mechanical alloying method. Further, by subjecting the magnetic alloy having a part set in an amorphous state to heat treatment, an exchange-spring magnet exhibits good properties regarding magnetic flux density and coercive force.