利索-全球专利检索

  1. Login
  2. Sign Up

Search Results

207 records (took 0.017 seconds)

    PREPARATION OF RARE EARTH PERMANENT MAGNET MATERIAL
    4.
    发明申请
    PREPARATION OF RARE EARTH PERMANENT MAGNET MATERIAL 审中-公开
    稀土永磁材料的制备

    公开(公告)号：US20170062104A1

    公开(公告)日：2017-03-02

    申请号：US15060104

    申请日：2016-03-03

    Applicant: Tianhe (Baotou) Advanced Tech Magnet Co., Ltd.

    Inventor： Shulin Diao ,  Yi Dong ,  Haibo Yi ,  Yuelin Fan ,  Juchang Miao ,  Shujie Wu ,  Yi Yuan ,  Ya Chen ,  Wenjie Yuan

    IPC: H01F1/055 ,  H01F1/053 ,  B22F9/02 ,  B22F3/24 ,  B22F9/04

    CPC classification number: H01F1/055 ,  B22F3/24 ,  B22F9/023 ,  B22F9/04 ,  B22F2003/248 ,  B22F2009/044 ,  H01F1/0536 ,  H01F1/0577 ,  H01F41/0293

    Abstract: The present invention provides a method for preparing a rare earth permanent magnet material. The preparation method of the present invention comprises atomizing spray process and infiltrating process, wherein the atomizing-sprayed sintered rare earth magnet is placed in a closed container before infiltrating. Through the atomizing spray process a solution containing a heavy rare earth element is coated on the surface of a sintered R1-Fe(Co)—B-A-X-M rare earth magnet, and after baking, heat treatment is performed to infiltrate the sprayed heavy rare earth element to the grain boundary phase of the sintered rare earth magnet. This method decreases the amount of a heavy rare earth element used, increases the coercive force of magnets with a little decrease of remanence, decreases the remanence temperature coefficient and coercive force temperature coefficient of the magnet, and improves resistance of the magnet against demagnetization at a high temperature.

    Abstract translation: 本发明提供稀土永磁材料的制备方法。 本发明的制备方法包括雾化喷雾工艺和渗透方法，其中雾化喷射烧结稀土磁体在渗透之前置于密闭容器中。 通过雾化喷雾法，将含有重稀土元素的溶液涂覆在烧结的R1-Fe（Co）-BAXM稀土磁体的表面上，烘烤后进行热处理，将喷射后的重稀土元素 烧结稀土磁体的晶界相。 该方法减少了所使用的重稀土元素的量，增加了磁铁的矫顽力，同时减少了磁铁的剩磁温度系数和矫顽力温度系数，从而提高了磁体的抗磁化能力。 高温。

    PERMANENT MAGNET, AND MOTOR AND GENERATOR USING THE SAME
    6.
    发明申请
    PERMANENT MAGNET, AND MOTOR AND GENERATOR USING THE SAME 审中-公开
    永久磁铁，使用它的电动机和发电机

    公开(公告)号：US20150147228A1

    公开(公告)日：2015-05-28

    申请号：US14611431

    申请日：2015-02-02

    Applicant: KABUSHIKI KAISHA TOSHIBA

    Inventor： Masaki Endo ,  Shinya Sakurada ,  Yosuke Horiuchi ,  Tsuyoshi Kobayashi ,  Keiko Okamoto ,  Masaya Hagiwara

    IPC: H01F1/055 ,  H02K1/02

    CPC classification number: H01F1/055 ,  H01F1/0557 ,  H02K1/02

    Abstract: In one embodiment, a permanent magnet has a composition represented by a composition formula: RpFeqMrCusCo100-p-q-r-s, where R is a rare earth element, M is at least one element selected from Zr, Ti, and Hf, p is 8.0 atomic % or more and 13.5 atomic % or less, q is 25 atomic % or more and 40 atomic % or less, r is 0.88 atomic % or more and 7.2 atomic % or less, and s is 3.5 atomic % or more and 13.5 atomic % or less, and a metallic structure including a cell phase having a Th2Zn17 crystal phase, a cell wall phase, and a platelet phase existing along a c plane of the Th2Zn17 crystal phase. An average thickness of the platelet phase is in a range of from 2.5 nm to 20 nm.

    Abstract translation: 在一个实施方案中，永磁体具有由组成式RpFeqMrCusCo100-pqrs表示的组成，其中R是稀土元素，M是选自Zr，Ti和Hf中的至少一种元素，p为8.0原子％以上 为13.5原子％以下，q为25原子％以上且40原子％以下，r为0.88原子％以上且7.2原子％以下，s为3.5原子％以上且13.5原子％以下， 以及包含具有Th2Zn17晶相的交流平面存在的具有Th2Zn17结晶相，细胞壁相和血小板相的细胞相的金属结构。 血小板相的平均厚度在2.5nm至20nm的范围内。

    RARE-EARTH MAGNET AND METHOD FOR PRODUCING THE SAME
    7.
    发明申请
    RARE-EARTH MAGNET AND METHOD FOR PRODUCING THE SAME 审中-公开
    稀土磁铁及其制造方法

    公开(公告)号：US20140242267A1

    公开(公告)日：2014-08-28

    申请号：US14237702

    申请日：2012-11-12

    Applicant: TYTOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Tetsuya Shoji ,  Akira Manabe ,  Noritaka Miyamoto ,  Motoki Hiraoka ,  Shinya Omura ,  Daisuke Ichigozaki ,  Shinya Nagashima

    IPC: H01F1/055 ,  H01F41/02

    CPC classification number: H01F1/055 ,  B22F3/10 ,  B22F3/162 ,  B22F3/26 ,  B22F2998/10 ,  C22C28/00 ,  C22F1/16 ,  H01F1/0577 ,  H01F41/0253 ,  H01F41/0293 ,  B22F2009/048 ,  B22F3/14

    Abstract: Provided is a rare-earth magnet containing no heavy rare-earth metals such as Dy or Tb in a grain boundary phase, has a modifying alloy for increasing coercivity (in particular, coercivity under a high-temperature atmosphere) infiltrated thereinto at lower temperature than in the conventional rare-earth magnets, has high coercivity, and has relatively high magnetizability, and a production method therefor. The rare-earth magnet RM includes a RE-Fe—B-based main phase MP with a nanocrystalline structure (where RE is at least one of Nd or Pr) and a grain boundary phase BP around the main phase, the grain boundary phase containing a RE-X alloy (where X is a metallic element other than heavy rare-earth elements). Crystal grains of the main phase MP are oriented along the anisotropy axis, and each crystal grain of the main phase, when viewed from a direction perpendicular to the anisotropy axis, has a plane that is quadrilateral in shape or has a close shape thereto.

    Abstract translation: 本发明提供一种在晶界相中不含重金属如Dy或Tb的稀土类磁体，具有在较低温度下渗透的矫顽力（特别是高温环境下的矫顽力）的改性合金， 在现有的稀土类磁铁中，具有高的矫顽力，并且具有较高的可磁化性及其制造方法。 稀土磁体RM包括具有纳米晶体结构的RE-Fe-B基主相MP（其中RE是Nd或Pr中的至少一个）和主相周围的晶界相BP，晶界相包含 RE-X合金（其中X是重稀土元素以外的金属元素）。 主相MP的晶粒沿着各向异性轴取向，当从与各向异性轴垂直的方向观察时，主相的各晶粒具有四边形或与其形状近似的面。

    PERMANENT MAGNET, MOTOR AND ELECTRIC GENERATOR
    9.
    发明申请
    PERMANENT MAGNET, MOTOR AND ELECTRIC GENERATOR 有权
    永久磁铁，电机和电力发电机

    公开(公告)号：US20120146444A1

    公开(公告)日：2012-06-14

    申请号：US13366834

    申请日：2012-02-06

    Applicant: Yosuke Horiuchi ,  Shinya Sakurada

    Inventor： Yosuke Horiuchi ,  Shinya Sakurada

    IPC: H02K21/00 ,  H01F7/02

    CPC classification number: H02K1/02 ,  C22C19/07 ,  C22C2202/02 ,  C22F1/10 ,  H01F1/055 ,  H01F1/0596 ,  H02K1/2766

    Abstract: In an embodiment, a magnet material includes a composition represented by R(FepMqCur(Co1-aAa)1-p-q-r)z, where R is at least one element selected from rare earth elements, M is at least one element selected from Ti, Zr and Hf, A is at least one element selected from Ni, V, Cr, Mn, Al, Si, Ga, Nb, Ta, and W, p is 0.05≦p≦0.6, q is 0.005≦q≦0.1, r is 0.01≦r≦0.15, a is 0≦a≦0.2, z is 4≦z≦9, and a structure including an intragranular phase having a Th2Zn17 crystal phase and a grain boundary phase. An average crystal grain diameter of the intragranular phase is in a range of 20 to 500 nm, and an average thickness of the grain boundary phase is smaller than a magnetic domain wall thickness.

    Abstract translation: 在一个实施方案中，磁体材料包括由R（FepMqCur（Co1-aAa）1-pqr）z表示的组合物，其中R是选自稀土元素中的至少一种元素，M是选自Ti，Zr 和Hf，A是选自Ni，V，Cr，Mn，Al，Si，Ga，Nb，Ta和W中的至少一种元素，p为0.05＆lt; nlE; p＆nlE; 0.6，q为0.005＆nlE; q＆nlE; r为0.01＆nlE; r＆nlE; 0.15，a为0＆lt; nlE; a＆nlE; 0.2，z为4＆lt; lE; z＆nlE; 9以及包含具有Th2Zn17结晶相和晶界相的晶内相的结构。 晶间相的平均晶粒直径在20〜500nm的范围内，晶界相的平均厚度小于磁畴壁厚。

Patent Agency Ranking