公开(公告)号：US12147770B2

公开(公告)日：2024-11-19

申请号：US17757375

申请日：2020-12-17

Applicant: SHOWA DENKO K.K.

Inventor： Chinatsu Tanabe ,  Hiroko Takashi ,  Nao Takeuchi ,  Eriko Takeda ,  Kenichiro Nakajima ,  Tomoko Miyashita

IPC: G06F40/30 ,  G06F40/106 ,  G06F40/109 ,  G06F40/279 ,  G06Q50/18

Abstract: An information processing device includes an analyzing unit configured to analyze text data representing claims included in patent document data to identify constituent components of an invention for each claim included in the claims, and a display control unit configured to cause a display device to display texts indicating each claim in the claims, in a form in which the texts indicating each claim are partitioned into the constituent components.

公开(公告)号：US10020097B2

公开(公告)日：2018-07-10

申请号：US14257512

申请日：2014-04-21

Applicant: SHOWA DENKO K.K.

Inventor： Kenichiro Nakajima ,  Akifumi Muraoka ,  Takashi Yamazaki

IPC: H01F1/053 ,  H01F41/02 ,  B22F3/12 ,  H01F1/057 ,  C22C38/00 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  C22C38/42

CPC classification number: 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

Abstract: 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 %.

公开(公告)号：US09558872B2

公开(公告)日：2017-01-31

申请号：US14146098

申请日：2014-01-02

Applicant: SHOWA DENKO K.K.

Inventor： Takashi Yamazaki ,  Kenichiro Nakajima

IPC: H01F1/053 ,  H01F1/40 ,  H01F1/057 ,  H01F41/02

CPC classification number: H01F1/40 ,  B22F1/0055 ,  B22F2998/10 ,  B22F2999/00 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0571 ,  H01F1/0577 ,  H01F41/0266 ,  H01F41/0273 ,  H01F41/0293 ,  B22F1/0059 ,  B22F3/03 ,  B22F3/10 ,  B22F2003/248 ,  B22F2009/044 ,  B22F2009/048 ,  B22F2009/049 ,  B22F2201/02 ,  B22F2201/11 ,  B22F2202/05

Abstract: An R-T-B rare earth sintered magnet contains 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 R-T-B rare earth sintered magnet including 13.4 to 17 at % of R, 4.5 to 5.5 at % of B, and 0.1 to 2.0 at % of M, and T as the balance; in which the R-T-B rare earth sintered magnet is formed of a sintered body which includes a main phase composed of R2Fe14B and a grain boundary phase including a larger amount of R than the main phase; in which the magnetization direction of the main phase is a c-axis direction, in which crystal grains of the main phase have one of an elliptical shape and an oval shape extended in such a direction so as to cross the c-axis direction; and in which the grain boundary phase includes an R-rich phase in which the total atomic concentration of the rare earth elements is 70 at % or greater and a transition metal-rich phase in which the total atomic concentration of the rare earth elements is 25 to 35 at %.

Abstract translation: R-T-B稀土烧结磁体包含表示稀土元素的R， T代表基本上含有Fe的过渡金属; 代表Al和/或Ga的金属元素M; B; 铜 和R-T-B系稀土类烧结磁体的不可避免的杂质，其中R为13.4〜17原子％，B为4.5〜5.5原子％，M为0.1〜2.0原子％，余量为T; 其中R-T-B稀土烧结磁体由包括由R2Fe14B组成的主相和包含比主相大的R的晶界相的烧结体形成; 其中主相的磁化方向是c轴方向，其中主相的晶粒具有椭圆形和椭圆形之一，沿着与c轴方向交叉的方向延伸; 并且其中晶界相包括稀土元素的总原子浓度为70原子％以上的富R相，以及稀土元素的总原子浓度为25的过渡金属富集相 至35原子％。