利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

515 条记录 (耗时 0.022 秒)

    NEODYMIUM-IRON-BORON MAGNET MATERIAL AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
    2.
    发明公开
    NEODYMIUM-IRON-BORON MAGNET MATERIAL AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF 审中-实审

    公开(公告)号：EP4379753A1

    公开(公告)日：2024-06-05

    申请号：EP22847786.5

    申请日：2022-01-17

    申请人： Fujian Golden Dragon Rare-earth Co., Ltd.

    发明人： MOU, Weiguo ,  HUANG, Jiaying ,  JIANG, Zheng

    IPC分类号： H01F1/057 ,  H01F41/02 ,  C22C38/06 ,  C22C38/10 ,  C22C38/12 ,  C22C38/16 ,  C22C33/02 ,  C21D6/00

    CPC分类号： Y02T10/64

    摘要： The invention discloses a neodymium-iron-boron magnet material, a preparation method and use thereof. The neodymium-iron-boron magnet material comprises the following components of: 28-33 wt% of R, wherein R is a rare earth element, and R comprises 27-31.5 wt% of Nd; 0.30-1.3 wt% of Al; 0.35-0.6 wt% of Cu; more than 0 wt% - less than or equal to 0.74 wt% of Co; 0.98-1.2 wt% of B; 62-69 wt% of Fe, wherein wt% is a percentage of the mass of respective component in the total mass of the neodymium-iron-boron magnet material; the neodymium-iron-boron magnet material comprises Nb, and a mass content of Nb satisfies the following condition: (Pr+Co) wt% ≤ (1+Nb) wt%. In the present invention, by further optimizing the formula of the neodymium-iron-boron magnet material, the coercivity of the neodymium-iron-boron magnet material prepared is significantly improved while maintaining higher remanence and squareness.

    SUPERSATURATED SOLID SOLUTION SOFT MAGNETIC MATERIAL AND PREPARATION METHOD THEREOF
    7.
    发明公开
    SUPERSATURATED SOLID SOLUTION SOFT MAGNETIC MATERIAL AND PREPARATION METHOD THEREOF 审中-公开

    公开(公告)号：EP4213166A1

    公开(公告)日：2023-07-19

    申请号：EP22179117.1

    申请日：2022-06-15

    申请人： Zhejiang University

    发明人： YAN, Mi ,  WU, Chen ,  CHEN, Qiming ,  JIN, Jiaying

    IPC分类号： H01F1/147 ,  C21C7/04 ,  C22C33/06 ,  C22C38/02 ,  C22C38/10 ,  C22C38/14

    摘要： A supersaturated solid solution soft magnetic material and a preparation method thereof are provided, belonging to the field of metal soft magnetic technologies. The supersaturated solid solution soft magnetic material is soft magnetic alloy with proportions of 72.0-78.0 at% Fe, 12.0-18.0 at% Si, 4.0-12.0 at% Co and 1.0-3.0 at% Ti. The preparation method uses molten glass purification or electromagnetic levitation melting to an alloy melt with a target supercooling degree, increases the solid solubility of the Ti element in α-Fe (Si, Co), and promotes the formation of supersaturated solid solution of Ti, thereby achieving the goal that the magnetocrystalline anisotropy constant and the magnetostriction coefficient tend to be zero. Ti element is uniformly distributed in the α-Fe (Si, Co) after supercooled solidification analyzed by X-ray energy spectrometer, a supersaturated solid solution alloy without Ti precipitation is obtained, and the soft magnetic alloy has low coercivity and high permeability.

    LOW-THERMAL-EXPANSION CASTING AND METHOD FOR MANUFACTURING SAME
    8.
    发明公开
    LOW-THERMAL-EXPANSION CASTING AND METHOD FOR MANUFACTURING SAME 审中-公开

    公开(公告)号：EP4130299A1

    公开(公告)日：2023-02-08

    申请号：EP20927499.2

    申请日：2020-03-24

    申请人： Shinhokoku Material Corp.

    发明人： OHNO, Haruyasu ,  SAKAGUCHI, Naoki ,  ONA, Kotaro

    IPC分类号： C21D6/00 ,  C22C38/00 ,  C22C38/10

    摘要： An object of the present invention is to provide a low thermal expansion cast steel having sufficient strength even at a high temperature and a low coefficient of thermal expansion. The low thermal expansion cast steel of the present invention is obtained by suitably heat treating a cast steel comprising, by mass%, C: 0 to 0.10%, Si: 0 to 1.00%, Mn: 0 to 1.00%, Co: 13.00 to 17.50%, Ni satisfying -3.5×%Ni+118≤%Co≤-3.5×%Ni+121 (%Ni and %Co respectively represent the contents of Ni and Co (mass%)), and a balance of Fe and unavoidable impurities so that the 0.2% proof stress in a tensile test at 400°C becomes 100 MPa or more, the average coefficient of thermal expansion at 25 to 350°C becomes 6.0 ppm/°C or less, and the Curie temperature becomes 350°C or more.