公开(公告)号：US20140191831A1

公开(公告)日：2014-07-10

申请号：US14146098

申请日：2014-01-02

Applicant: Showa Denko K.K.

Inventor： Takashi YAMAZAKI ,  Kenichiro NAKAJIMA

IPC: H01F1/40 ,  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; 表示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％。

公开(公告)号：US20230334252A1

公开(公告)日：2023-10-19

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 ,  G06Q50/18 ,  G06F40/106 ,  G06F40/279 ,  G06F40/109

CPC classification number: G06F40/30 ,  G06Q50/184 ,  G06F40/106 ,  G06F40/279 ,  G06F40/109

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：US20170162305A1

公开(公告)日：2017-06-08

申请号：US15366592

申请日：2016-12-01

Applicant: SHOWA DENKO K.K.

Inventor： Takashi YAMAZAKI ,  Kenichiro NAKAJIMA ,  Akifumi MURAOKA

IPC: H01F1/055 ,  C22C38/16 ,  C22C38/10 ,  B22F3/16 ,  C22C38/00 ,  B22D23/00 ,  C21D6/00 ,  B22F9/04 ,  H01F41/02 ,  C22C38/06

CPC classification number: H01F1/0557 ,  B22D23/00 ,  B22F3/16 ,  B22F9/04 ,  B22F2301/355 ,  B22F2998/10 ,  C21D6/007 ,  C22C33/02 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0266 ,  B22F3/02 ,  B22F3/10

Abstract: In an alloy for an R-T-B-based rare earth sintered magnet of the present invention formed of a rare earth element R, a transition metal T containing Fe as a main component, a metal element M containing one or more types of metals selected from Al, Ga, and Cu, and B and inevitable impurities, 13 at % to 16 at % of R is contained, 4.5 at % to 6.2 at % of B is contained, 0.1 at % to 2.4 at % of M is contained, the balance is T and the inevitable impurities, a proportion of Dy in the entire rare earth element is 0 at % to 65 at %, Formula 1 described below is satisfied, a main phase containing R2Fe14B and an alloy grain boundary phase containing more R than the main phase are included, and a distance between the alloy grain boundary phases is greater than or equal to 3 μm and less than or equal to 11 μm. 0.30≦B/TRE≦0.37  (Formula 1)

公开(公告)号：US20160284452A1

公开(公告)日：2016-09-29

申请号：US15075757

申请日：2016-03-21

Applicant: SHOWA DENKO K.K.

Inventor： Masaki HORIKITA ,  Kenichiro NAKAJIMA ,  Akifumi MURAOKA

IPC: H01F1/053 ,  C22C38/00 ,  B22F3/24 ,  B22F3/10 ,  H01F41/02 ,  C21D9/00

CPC classification number: C22C38/005 ,  B22F3/24 ,  B22F2998/10 ,  C21D9/00 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0266 ,  B22F3/10 ,  B22F2003/248

Abstract: An R-T-B-based rare earth sintered magnet comprising: a rare earth element R, B, a metallic element M which includes one or more metals selected from Al, Ga and Cu, a transition metal T which includes Fe as a main component and inevitable impurities, wherein the sintered magnet includes: 13 to 15.5 atom % of R, 5.0 to 6.0 atom % of B, 0.1 to 2.4 atom % of M, and T and the inevitable impurities as a balance, and wherein the sintered magnet includes more than 0 atom % and 0.01 atom % or less of Tb as the rare earth element R.

Abstract translation: 一种RTB系稀土烧结磁体，其特征在于，含有：稀土类元素R，B，含有选自Al，Ga，Cu中的一种以上的金属的金属元素M，以Fe为主成分的过渡金属T和不可避免的杂质 其特征在于，所述烧结磁体包括：13〜15.5原子％的R，5.0〜6.0原子％的B，0.1〜2.4原子％的M，以及T和余量的不可避免的杂质，其中，所述烧结磁体包含大于0 原子％和0.01原子％以下的Tb作为稀土元素R.

公开(公告)号：US20160268024A1

公开(公告)日：2016-09-15

申请号：US15066143

申请日：2016-03-10

Applicant: SHOWA DENKO K.K.

Inventor： Takashi YAMAZAKI ,  Akifumi MURAOKA ,  Kenichiro NAKAJIMA

IPC: H01F1/057 ,  C22C38/00 ,  C22C38/10 ,  C22C38/06 ,  C22C38/16 ,  C22C38/14

CPC classification number: C22C38/002 ,  B22F3/10 ,  C22C33/0278 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0577

Abstract: An R-T-B-based rare earth sintered magnet, comprising a rare earth element R, B, a metallic element M which includes one or more metals selected from Al, Ga and Cu, a transition metal T which includes Fe as a main component, and inevitable impurities, wherein the sintered magnet includes 13 atom % to 15.5 atom % of R, 5.0 atom % to 6.0 atom % of B, 0.1 atom % to 2.4 atom % of M, and T and the inevitable impurities as a balance, and wherein the sintered magnet includes 0.015 atom % to 0.10 atom % of Zr as the transition metal T.

Abstract translation: 一种包含稀土元素R，B的金属元素M的RTB基稀土烧结磁体，包括选自Al，Ga和Cu中的一种或多种金属的金属元素M，包含Fe作为主要成分的过渡金属T和不可避免的 杂质，其中，所述烧结磁体包含13原子％〜15.5原子％的R，5.0原子％〜6.0原子％的B，0.1原子％〜2.4原子％的M，T和余量的不可避免的杂质， 作为过渡金属T，烧结磁体包含0.015原子％至0.10原子％的Zr。

公开(公告)号：US20170025207A1

公开(公告)日：2017-01-26

申请号：US15219110

申请日：2016-07-25

Applicant: SHOWA DENKO K.K.

Inventor： Kenichiro NAKAJIMA ,  Takashi YAMAZAKI

IPC: H01F1/053 ,  C22C33/02 ,  C22C38/16 ,  H02K1/02 ,  C22C38/02 ,  C22C38/00 ,  B22F3/16 ,  B22F3/24 ,  C22C38/06

CPC classification number: 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

Abstract: 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.

Abstract translation: 其中Dy表示Dy元素的浓度（at％），B表示硼元素的浓度（at％），TRE表示所有稀土元素的浓度（at％）。

公开(公告)号：US20160012946A1

公开(公告)日：2016-01-14

申请号：US14789495

申请日：2015-07-01

Applicant: SHOWA DENKO K.K.

Inventor： Masaki HORIKITA ,  Takashi YAMAZAKI ,  Kenichiro NAKAJIMA

IPC: H01F1/057 ,  B22F9/08 ,  H01F41/02 ,  B22F9/02

CPC classification number: H01F1/0573 ,  B22F9/023 ,  B22F9/08 ,  C22C33/0278 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0266

Abstract: Provided is a method of manufacturing an alloy for an R-T-B-based rare earth sintered magnet, with which an R-T-B-based magnet having high coercive force can be obtained even when the B concentration is low and the Dy concentration is zero or extremely low.This method includes: a casting step of manufacturing a cast alloy by casting a molten alloy, a hydrogenating step of absorbing hydrogen in the cast alloy; and a dehydrogenating step of removing hydrogen from the cast alloy absorbing hydrogen in an inert gas atmosphere at a temperature lower than 550° C., wherein the molten alloy consists of B, a rare earth element R, a transition metal T essentially containing Fe, a metal element M, and unavoidable impurities, in which the R content is 13 at % to 15.5 at %, the B content is 5.0 at % to 6.0 at %, the M content is 0.1 at % to 2.4 at %, the T content is a balance, a ratio of a Dy content to the total content of the rare earth element is 0 at % to 65 at %, and the molten alloy satisfies the below formula (1). 0.32≦B/TRE≦0.40  (1).

Abstract translation: 提供一种制造用于R-T-B系稀土烧结磁体的合金的方法，即使当B浓度低，Dy浓度为零或极低时，也可以获得具有高矫顽力的R-T-B系磁体。 该方法包括：通过铸造熔融合金制造铸造合金的铸造步骤，在铸造合金中吸氢的氢化步骤; 以及在低于550℃的温度下在惰性气体气氛中从铸造合金中除去氢的脱氢步骤，其中熔融合金由B组成，稀土元素R，基本上含有Fe的过渡金属T， 金属元素M和不可避免的杂质，其中R含量为13原子％至15.5原子％，B含量为5.0原子％至6.0原子％，M含量为0.1原子％至2.4原子％，T含量 是余量，Dy含量与稀土元素的总含量的比例为0at％〜65at％，熔融合金满足下式（1）。 0.32＆nlE; B / TRE＆nlE; 0.40（1）。

公开(公告)号：US20140314612A1

公开(公告)日：2014-10-23

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

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 %.

Abstract translation: 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％。