公开(公告)号：US20240279378A1

公开(公告)日：2024-08-22

申请号：US18565270

申请日：2022-05-26

Applicant: TOYOBO MC Corporation

Inventor： Daiki FUNAOKA

IPC: C08F283/01 ,  C08K3/08 ,  H01F1/053

CPC classification number: C08F283/01 ,  C08K3/08 ,  H01F1/053 ,  C08K2201/01

Abstract: An object of the present invention is to provide a composition including magnetic powder having excellent fluidity and sufficient curing speed, and the present invention is a thermosetting composition including a crystalline radical polymerizable compound having a melting point in the range of 30 to 150° C. and magnetic powder.

公开(公告)号：US20230187130A1

公开(公告)日：2023-06-15

申请号：US17547809

申请日：2021-12-10

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Wanfeng Li ,  Michael W. Degner

IPC: H01F41/02 ,  H01F1/053 ,  H01F1/10 ,  B29C64/153 ,  B29C64/393 ,  B33Y80/00 ,  B33Y70/00 ,  B33Y50/02

CPC classification number: H01F41/0246 ,  H01F41/0266 ,  H01F1/053 ,  H01F1/10 ,  B29C64/153 ,  B29C64/393 ,  B33Y80/00 ,  B33Y70/00 ,  B33Y50/02

Abstract: Permanent magnets and methods of making the same are disclosed herein. The permanent magnets include a 3D-printed, i.e., additively manufactured, framework and an infiltrate such that there is a discrete magnetic phase and a discrete non-magnetic phase or two discrete magnetic phases. The infiltrate may provide superior strength, elasticity or magnetic properties.

公开(公告)号：US20190189313A1

公开(公告)日：2019-06-20

申请号：US16283856

申请日：2019-02-25

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Naoyuki Sanada ,  Shinya Sakurada

IPC: H01F1/053 ,  H02K7/00 ,  C22C38/28 ,  C22C38/08 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00

CPC classification number: H01F1/053 ,  B22F3/162 ,  C22C38/001 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/28 ,  C22C2202/02 ,  H01F1/0551 ,  H01F1/0557 ,  H01F1/059 ,  H01F1/0596 ,  H02K7/003

Abstract: The permanent magnet includes: a main phase expressed by a composition formula: RMZNX and having at least one crystal structure selected from the group consisting of a Th2Ni17 crystal structure, a Th2Zn17 crystal structure, and a TbCu7 crystal structure; and a sub phase having a phosphorus compound phase containing a phosphorus compound excluding a phosphoric acid compound.

公开(公告)号：US20180114622A1

公开(公告)日：2018-04-26

申请号：US15560814

申请日：2016-03-24

Applicant: NITTO DENKO CORPORATION

Inventor： Makoto FUJIHARA ,  Kenichi FUJIKAWA ,  Shoichiro SAITO

IPC: H01F7/02 ,  H02K1/27 ,  H02K15/03

CPC classification number: H01F7/0247 ,  H01F1/053 ,  H01F1/0577 ,  H01F1/08 ,  H01F7/02 ,  H01F41/0273 ,  H01F41/028 ,  H02K1/22 ,  H02K1/27 ,  H02K15/03

Abstract: This invention provides for a rotary electric machine that includes a rotor having a plurality of permanent magnets arranged in the circumferential direction, and in which the leakage of magnetic flux can be suppressed with a simple structure; and a rare-earth permanent magnet-forming sintered compact for forming rare-earth permanent magnets to be used in said rotary electric machine.

公开(公告)号：US20180044810A1

公开(公告)日：2018-02-15

申请号：US15782875

申请日：2017-10-13

Applicant: Shin-Etsu Chemical Co., Ltd.

Inventor： Yukihiro Kuribayashi ,  Yoshifumi Nagasaki

IPC: C25D7/00 ,  C25D5/34 ,  H01F1/053 ,  H01F41/00 ,  C25D5/50

CPC classification number: C25D7/001 ,  C25D5/34 ,  C25D5/50 ,  C25D13/02 ,  C25D13/12 ,  C25D13/22 ,  H01F1/053 ,  H01F1/0577 ,  H01F41/005 ,  H01F41/0293

Abstract: A rare earth permanent magnet is prepared by immersing a portion of a sintered magnet body of R1—Fe—B composition (wherein R1 is a rare earth element) in an electrodepositing bath of a powder dispersed in a solvent, the powder comprising an oxide, fluoride, oxyfluoride, hydride or rare earth alloy of a rare earth element, effecting electrodeposition for letting the powder deposit on a region of the surface of the magnet body, and heat treating the magnet body with the powder deposited thereon at a temperature below the sintering temperature in vacuum or in an inert gas.

公开(公告)号：US20180012690A1

公开(公告)日：2018-01-11

申请号：US15545170

申请日：2016-01-21

Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

Inventor： Mitsuru MORITA

IPC: H01F6/06 ,  H01F1/10 ,  H01F1/053

CPC classification number: H01F6/06 ,  C01G1/00 ,  C01G3/00 ,  H01B12/00 ,  H01F1/053 ,  H01F1/10 ,  H01F6/00 ,  H01F7/02 ,  Y02E40/64

Abstract: An oxide superconducting bulk magnet able to prevent breakage of a superconducting bulk member and able to give a sufficient amount of total magnetic flux at a superconducting bulk member surface even under high magnetic field strength conditions, comprising an oxide superconducting bulk laminate formed from sheet-shaped oxide superconducting bulk members and high strength reinforcing members arranged between the stacked oxide superconducting bulk members, the outer circumference of the oxide superconducting bulk laminate being provided with an outer circumference reinforcing member.

公开(公告)号：US20170178772A1

公开(公告)日：2017-06-22

申请号：US15380079

申请日：2016-12-15

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Noritsugu SAKUMA ,  Akira KATO ,  Masao YANO ,  Shunji SUZUKI ,  Kurima KOBAYASHI

IPC: H01F1/053 ,  C22C38/10 ,  C22C38/00 ,  C22C38/14 ,  C22C38/12

CPC classification number: H01F1/053 ,  C22C38/005 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  H01F1/0557

Abstract: A rare earth magnet having a main phase and a sub-phase, wherein the main phase has a ThMn12-type crystal structure; the sub-phase contains at least any one of an Sm5Fe17-based phase, an SmCo5-based phase, an Sm2O3-based phase, and an Sm7Cu3-based phase; assuming that the volume of the rare earth magnet is 100%, the volume fraction of the sub-phase is from 2.3 to 9.5% and the volume fraction of an α-Fe phase is 9.0% or less; and the density of the rare earth magnet is 7.0 g/cm3 or more.

公开(公告)号：US09589714B2

公开(公告)日：2017-03-07

申请号：US13383034

申请日：2010-07-09

Applicant: Masato Sagawa

Inventor： Masato Sagawa

IPC: H01F1/057 ,  B22F3/10 ,  B22F1/00 ,  H01F7/02 ,  C22C38/00 ,  C22C38/06 ,  C22C38/10 ,  C22C38/16 ,  B22F1/02 ,  H01F41/02

CPC classification number: H01F41/0293 ,  B22D11/001 ,  B22F1/025 ,  B22F3/1017 ,  B22F3/24 ,  B22F9/04 ,  B22F2003/241 ,  B22F2003/248 ,  B22F2009/044 ,  B22F2201/20 ,  B22F2202/05 ,  B22F2301/355 ,  B22F2998/10 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/16 ,  C23C10/30 ,  C23C12/02 ,  H01F1/053 ,  H01F1/0571 ,  H01F1/0577 ,  H01F1/086 ,  H01F7/02

Abstract: Disclosed is a sintered NdFeB magnet having high coercivity (HcJ) a high maximum energy product ((BH)max) and a high squareness ratio (SQ) even when the sintered magnet has a thickness of 5 mm or more. The sintered NdFeB magnet is produced by diffusing Dy and/or Tb in grain boundaries in a base material of the sintered NdFeB magnet by a grain boundary diffusion process. The sintered NdFeB magnet is characterized in that the amount of rare earth in a metallic state in the base material is between 12.7 and 16.0% in atomic ratio, a rare earth-rich phase continues from the surface of the base material to a depth of 2.5 mm from the surface at the grain boundaries of the base material, and the grain boundaries in which RH has been diffused by the grain boundary diffusion process reach a depth of 2.5 mm from the surface.

Abstract translation: 公开了即使当烧结磁体的厚度为5mm以上时，具有高矫顽力（HcJ），高最大能量积（（BH）max）和高矩形比（SQ）的烧结NdFeB磁体。 NdFeB烧结磁体是通过晶界扩散法在DyFeB磁体烧结体的基材中的晶界扩散Dy和/或Tb而制造的。 烧结NdFeB磁体的特征在于，基材中金属状态的稀土元素的原子比为12.7〜16.0％，富稀土相从基材表面延伸至2.5的深度 在基材的晶界处的表面为mm，并且通过晶界扩散工艺扩散的RH的晶界从表面到达2.5mm的深度。

公开(公告)号：US20160343482A1

公开(公告)日：2016-11-24

申请号：US15112458

申请日：2015-03-03

Applicant: JX NIPPON MINING & METALS CORPORATION

Inventor： Masaki Nakano ,  Hirotoshi Fukunaga ,  Takeshi Yanai ,  Masaru Itakura ,  Hironobu Sawatari

IPC: H01F1/00 ,  H01F41/02 ,  C23C14/16 ,  H01F1/053 ,  C23C14/28 ,  C23C14/58

CPC classification number: H01F1/0045 ,  C22C33/003 ,  C22C38/00 ,  C22C38/002 ,  C22C38/005 ,  C22C45/02 ,  C23C14/16 ,  C23C14/28 ,  C23C14/5806 ,  H01F1/053 ,  H01F10/126 ,  H01F41/0253 ,  H01F41/205

Abstract: The present invention provides a rare earth thin film magnet having Nd, Fe, and B as essential components, wherein the rare earth thin film magnet has a texture in which an α-Fe phase and a Nd2Fe14B phase are alternately arranged three-dimensionally, and each phase has an average crystal grain size of 10 to 30 nm. An object of this invention is to provide a rare earth thin film magnet having superior mass productivity and reproducibility and favorable magnetic properties, as well as to provide the production method thereof and a target for producing the thin film.

Abstract translation: 本发明提供一种以Nd，Fe，B为必要成分的稀土类薄膜磁铁，其特征在于稀土类薄膜磁铁具有三维交替配置α-Fe相和Nd2Fe14B相的结构， 各相的平均结晶粒径为10〜30nm。 本发明的目的是提供一种具有优异的批量生产率和再现性以及良好的磁性能的稀土类薄膜磁铁，以及提供其生产方法和制造该薄膜的目的。

公开(公告)号：US20160307697A1

公开(公告)日：2016-10-20

申请号：US15094373

申请日：2016-04-08

Applicant: JTEKT CORPORATION

Inventor： Takumi MIO ,  Koji NISHI ,  Yusuke KIMOTO ,  Takashi TAMURA

IPC: H01F41/02 ,  H01F1/053 ,  B22F5/00 ,  B22F1/00 ,  B22F3/16 ,  H01F1/08 ,  C22C38/00

CPC classification number: H01F41/0266 ,  B22F1/0062 ,  B22F3/16 ,  B22F5/00 ,  B22F2301/355 ,  B22F2302/20 ,  B22F2998/10 ,  C22C38/001 ,  C22C38/005 ,  H01F1/053 ,  H01F1/059 ,  H01F1/06 ,  H01F1/08

Abstract: A magnet manufacturing method has a step of preparing mixed powder of magnetic powder of a hard magnetic material, which includes one or more of an Fe—N-based compound and an R—Fe—N-based compound and a lubricant that allows formation of an adsorption film on a surface of the magnetic powder, a step of heating the mixed powder at a temperature that is equal to or higher than a melting point of the lubricant and that is lower than a decomposition temperature of the magnetic powder to form the adsorption film of the lubricant on the surface of the magnetic powder, a step of pressurizing and molding the magnetic powder in order to obtain a primary molding, and a step of heating the primary molding at a temperature that is lower than the decomposition temperature of the magnetic powder.

Abstract translation: 磁铁制造方法具有制备硬磁性材料的磁性粉末的混合粉末的步骤，其包括Fe-N基化合物和R-Fe-N基化合物中的一种或多种，​​以及允许形成 磁性粉末表面上的吸附膜，在等于或高于润滑剂的熔点并低于磁粉的分解温度的温度下加热混合粉末以形成吸附的步骤 磁性粉末表面上的润滑剂膜，为了获得一次成型而对磁性粉末进行加压和成形的步骤，以及在低于磁性体的分解温度的温度下加热第一成型体的步骤 粉末。