公开(公告)号：US20210365472A1

公开(公告)日：2021-11-25

申请号：US17315491

申请日：2021-05-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masao YANO ,  Tetsuya SHOJI

IPC: G06F16/26 ,  G06F16/23 ,  G06F16/2457

Abstract: An information processing device receives material data, relating to a material, that have been sent from a user terminal. The information processing device performs analysis in accordance with one or more analysis techniques with respect to the material data to thereby acquire analysis result data representing analysis results. The information processing device sends the analysis result data to the user terminal.

公开(公告)号：US20210327620A1

公开(公告)日：2021-10-21

申请号：US17182993

申请日：2021-02-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Noritsugu SAKUMA ,  Tetsuya SHOJI ,  Akihito KINOSHITA

IPC: H01F1/057 ,  H01F1/058 ,  C22C38/00 ,  H01F41/02

Abstract: A rare earth magnet includes a main phase and a particle boundary phase and in which an overall composition is represented by a formula, (R2(1-x)R1x)yFe(100-y-w-z-v)CowBzM1v.(R3(1-p)M2p)q.(R4(1-s)M3s)t, where R1 is a light rare earth element, R2 and R3 are a medium rare earth element, R4 is a heavy rare earth element, M1, M2, M3 are a predetermined metal element. The main phase includes a core portion, a first shell portion, and a second shell portion. The content proportion of medium rare earth element is higher in the first shell portion than in the core portion, the content proportion of medium rare earth element is lower in the second shell portion than in the first shell portion. The second shell portion contains heavy rare earth elements.

公开(公告)号：US20210182734A1

公开(公告)日：2021-06-17

申请号：US17084096

申请日：2020-10-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masao YANO ,  Tetsuya SHOJI

IPC: G06N20/00 ,  G06K9/62

Abstract: A data analysis system comprising a measurement data acquisition part acquiring measurement data received through the communication part and analyzing a material, a data analysis part using a trained machine learning model to process the measurement data and outputting the results of analysis of the measurement data, a storage processing part storing in an analysis result database of the storage device a data set including the measurement data and the results of processing obtained by processing the measurement data as the analysis result data set, a learning-use data set acquisition part acquiring a learning-use data set including results of evaluation of the results of processing of the measurement data performed at the outside based on the analysis result data set received through the communication part, and a learning part retraining the machine learning model based on the learning-use data set.

公开(公告)号：US20210074455A1

公开(公告)日：2021-03-11

申请号：US17004270

申请日：2020-08-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Noritsugu SAKUMA ,  Tetsuya SHOJI ,  Yukio TAKADA

IPC: H01F1/057 ,  H01F41/02

Abstract: A rare earth magnet 100 including a main phase 10 and a grain boundary phase 20. The overall composition is represented by the formula: (R2(1-x)R1x)yFe(100-y-w-z-v)CowBzM1v.(R3(1-p)M2p)q. R1 is an element selected from Ce, La, Y, and Sc. R2 and R3 is an element selected from Nd, Pr, Gd, Tb, Dy, and Ho. M1 is a predetermined element, etc. M2 is a transition metal element, etc. The average particle dimeter of the main phase 10 is from 1 to 20 μm. The main phase 10 has a core portion 12 and a shell portion 14. The thickness of the shell portion 14 is from 25 to 150 nm. The “a” is the ratio of the light rare earth element of the core portion 12 and the “b” is the ratio of the light rare earth element of the core portion 12. These satisfy 0≤b≤0.30 and 0≤b/a≤0.50.

公开(公告)号：US20200098497A1

公开(公告)日：2020-03-26

申请号：US16576347

申请日：2019-09-19

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  TOHOKU UNIVERSITY

Inventor： Noritsugu SAKUMA ,  Tetsuya SHOJI ,  Akihito KINOSHITA ,  Kazuaki HAGA ,  Daisuke ICHIGOZAKI ,  Yukio TAKADA ,  Satoshi SUGIMOTO ,  Masashi MATSUURA

IPC: H01F1/059 ,  H01F41/02 ,  B22F3/24 ,  C22C18/02 ,  C22C38/00

Abstract: To provide a rare earth magnet in which particles of SmFeN powder are bound using a Zn powder, wherein generation of a knick at a magnetic field of around 0 is prevented and high residual magnetic flux density Br is thereby achieved, and a production method thereof.A rare earth magnet including a main phase containing Sm, Fe, and N, at least a part of the main phase having a Th2Zn17-type or Th2Ni17-type crystal structure, a sub-phase containing Zn and Fe and being present around the main phase, and an intermediate phase containing Sm, Fe and N as well as Zn and being present between the main phase and the sub-phase, wherein the average Fe content in the sub-phase is 33 at % or less relative to the whole sub-phase.

公开(公告)号：US20190362870A1

公开(公告)日：2019-11-28

申请号：US16532651

申请日：2019-08-06

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masaaki ITO ,  Masao YANO ,  Hidefumi KISHIMOTO ,  Noritsugu SAKUMA ,  Tetsuya SHOJI ,  Akira MANABE

IPC: H01F1/055 ,  H01F41/02 ,  C22C33/02 ,  C22C38/00 ,  H01F1/057 ,  C22C38/10

Abstract: To provide a rare earth magnet ensuring excellent magnetic anisotropy while reducing the amount of Nd, etc., and a manufacturing method thereof.A rare earth magnet comprising a crystal grain having an overall composition of (R2(1-x)R1x)yFe100-y-w-z-vCowBzTMv (wherein R2 is at least one of Nd, Pr, Dy and Tb, R1 is an alloy of at least one or two or more of Ce, La, Gd, Y and Sc, TM is at least one of Ga, Al, Cu, Au, Ag, Zn, In and Mn, 0

公开(公告)号：US20160336112A1

公开(公告)日：2016-11-17

申请号：US15107631

申请日：2014-12-19

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Akira KANO ,  Tetsuya SHOJI ,  Osamu YAMASHITA ,  Daisuke ICHIGOZAKI

IPC: H01F41/02 ,  H01F1/057

CPC classification number: H01F41/0266 ,  H01F1/0576 ,  H01F1/0577 ,  H01F41/0273

Abstract: A method of manufacturing a rare earth magnet includes: preparing a powder by preparing a rapidly-solidified ribbon by liquid solidification, and by crushing the rapidly-solidified ribbon; manufacturing a sintered compact by press-forming the powder; and manufacturing a rare earth magnet by performing hot deformation processing on the sintered compact to impart anisotropy to the sintered compact. In this method, the rapidly-solidified ribbon is a plurality of fine crystal grains. The powder includes a RE-Fe—B main phase and a grain boundary phase of a RE-X alloy present around the main phase. RE represents at least one of Nd and Pr. X represents a metal element. A nitrogen content in the powder is adjusted to be at least 1,000 ppm and less than 3,000 ppm by performing at least one of the preparation of the powder and the manufacturing of the sintered compact in a nitrogen atmosphere.

Abstract translation: 稀土类磁体的制造方法包括：通过液态固化制备快速凝固的带，通过粉碎快速凝固的带来制备粉末; 通过压制成型粉末制造烧结体; 并通过对烧结体进行热变形处理来制造稀土磁体，以赋予烧结体各向异性。 在该方法中，快速凝固的带是多个细晶粒。 该粉末包含RE-Fe-B主相和存在于主相周围的RE-X合金的晶界相。 RE表示Nd和Pr中的至少一种。 X表示金属元素。 通过在氮气气氛中进行粉末的制备和烧结体的制造中的至少一种将粉末中的氮含量调整为至少1,000ppm且小于3,000ppm。

公开(公告)号：US20160322159A1

公开(公告)日：2016-11-03

申请号：US15107603

申请日：2014-12-19

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Noritsugu SAKUMA ,  Tetsuya SHOJI ,  Daisuke SAKUMA ,  Kazuaki HAGA

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

CPC classification number: H01F41/0266 ,  B22F3/10 ,  B22F2998/10 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/16 ,  C22C2202/02 ,  C22F1/16 ,  H01F1/0536 ,  H01F1/057 ,  H01F1/0576 ,  H01F1/0577 ,  H01F41/0293 ,  B22F2003/185 ,  B22F2003/248 ,  B22F2003/208

Abstract: A manufacturing method includes: manufacturing a sintered compact having a composition of (Rl)x(Rh)yTzBsMt; manufacturing a precursor by performing hot deformation processing on the sintered compact; and manufacturing a rare earth magnet by performing an aging treatment on the precursor in a temperature range of 450° C. to 700° C. In this method, a main phase thereof is formed of a (RlRh)2T14B phase. A content of a (RlRh)1.1T4B4 phase in a grain boundary phase thereof is more than 0 mass % and 50 mass % or less. Rl represents a light rare earth element. Rh represents a heavy rare earth element. T represents a transition metal. M represents at least one of Ga, Al, Cu, and Co. x, y, z, s, and t are percentages by mass of Rl, Rh, T, B, and M. x, y, z, s, and t are expressed by the following expressions: 27≦x≦44, 0≦y≦10, z=100−x−y−s−t, 0.75≦s≦3.4, 0≦t≦3.

Abstract translation: 制造方法包括：制造具有（R1）x（Rh）yTzBsMt的组成的烧结体; 通过对烧结体进行热变形处理来制造前体; 并通过在450℃〜700℃的温度范围内对前体进行时效处理来制造稀土类磁体。在该方法中，其主相由（R1Rh）2T14B相形成。 在其晶界相中的（R1Rh）1.1T4B4相的含量大于0质量％和50质量％以下。 R1表示轻稀土元素。 Rh代表重稀土元素。 T表示过渡金属。 M表示Ga，Al，Cu和Co中的至少一种，x，y，z，s和t是R1，Rh，T，B和M的质量百分比。x，y，z，s和 t由以下表达式表示：27≤x≤44,0≤y≤10，z = 100-x-y-s-t，0.75≤s≤3.4,0≤t≤3。

公开(公告)号：US20160141083A1

公开(公告)日：2016-05-19

申请号：US14896215

申请日：2014-06-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masaaki ITO ,  Masao YANO ,  Hidefumi KISHIMOTO ,  Noritsugu SAKUMA ,  Tetsuya SHOJI ,  Akira MANABE

IPC: H01F1/055 ,  H01F41/02 ,  C22C38/10 ,  C22C38/00 ,  B22F3/14 ,  B22F5/00

Abstract: To provide a rare earth magnet ensuring excellent magnetic anisotropy while reducing the amount of Nd, etc., and a manufacturing method thereof.A rare earth magnet comprising a crystal grain having an overall composition of (R2(1-x)R1x)yFe100-y-w-z-vCowBzTMv (wherein R2 is at least one of Nd, Pr, Dy and Tb, R1 is an alloy of at least one or two or more of Ce, La, Gd, Y and Sc, TM is at least one of Ga, Al, Cu, Au, Ag, Zn, In and Mn, 0

Abstract translation: 提供一种确保优异的磁各向异性同时减少Nd等的量的稀土磁体及其制造方法。 包含具有（R2（1-x）R1x）yFe100-ywz-vCowBzTMv（其中R2是Nd，Pr，Dy和Tb中至少一种）的总体组成的晶粒的稀土磁体，R1是至少为 Ce，La，Gd，Y和Sc中的一种或两种以上，TM是Ga，Al，Cu，Au，Ag，Zn，In和Mn中的至少一种，0