RARE-EARTH HIGH ENTROPY ALLOYS AND TRANSITION METAL HIGH ENTROPY ALLOYS AS BUILDING BLOCKS FOR THE SYNTHESIS OF NEW MAGNETIC PHASES FOR PERMANENT MAGNETS

    公开(公告)号:WO2021063479A1

    公开(公告)日:2021-04-08

    申请号:PCT/EP2019/076449

    申请日:2019-09-30

    Abstract: The invention relates to high entropy alloy of rare earth elements (RE-HEAs) including at least four and up to twelve elements selected form rare earth elements R1,R2,R3,R4,R5,R6,R7,R8,R9,R10,R11,R12, which rare earth elements R1 to R12 each represents one of elements 57 to 60, 62 to 70, 39 and 40 of the periodic system and to high entropy alloy of transition elements (TM-HEAs) including at least 3 and up to 12 elements selected from transitional elements TM1,TM2,TM3,TM4,TM5,TM6,TM7,TM8,TM9,TM10,TM11,TM12, which transitional elements TM1 to TM12 each represent at least one of elements 21 to 30, 41 to 48 and 72 to 79 of the periodic system. Such RE-HEAs and/or TM-HEAs can be used as building blocks in magnetic high entropy composite alloys, e.g. of the type (RE-HEAs)x(TM-HEAs)yTz, for the manufacture of magnetic devices and permanent magnets.

    COLD SPRAY OF BRITTLE MATERIALS
    4.
    发明申请

    公开(公告)号:WO2020102704A1

    公开(公告)日:2020-05-22

    申请号:PCT/US2019/061773

    申请日:2019-11-15

    Abstract: In one aspect of an inventive concept, a product includes a substrate and a material formed from a precursor powder, where the material includes a plurality of particles from the precursor powder deposited on the substrate. The plurality of particles have structural characteristics defined by an impact of the particles on the substrate and/or on previously deposited particles. Moreover, the material has a microstructure, where the microstructure of the material is substantially the same as a microstructure of the precursor powder. The microstructure of the material is characterized by at least one property, where the at least one property is substantially the same as a corresponding at least one property of the precursor powder.

    细晶粒稀土类合金铸片、制备方法、旋转冷却辊装置

    公开(公告)号:WO2018121112A1

    公开(公告)日:2018-07-05

    申请号:PCT/CN2017/111025

    申请日:2017-11-15

    Abstract: 一种细晶粒稀土类合金铸片、制备方法及旋转冷却辊装置。所述合金铸片具有贴辊面和自由面,包括以R 2 Fe 14 B型化合物为主相的晶粒,沿温度梯度截面上,晶粒包括非柱状晶粒和柱状晶粒,其中,纵横比为0.3~2的非柱状晶粒占晶粒的面积百分比≥60%,占晶粒的个数百分比≥75%;纵横比≥3的柱状晶粒占晶粒的面积百分比≤15%,占晶粒的个数百分比≤10%;合金铸片包括R 2 Fe 14 B型主相、内嵌于晶粒内的晶粒内部富稀土相、以及分布于晶粒边界的晶粒边界富稀土相,其中,晶粒内部富稀土相的间隔为0.5~3.5μm。制备的合金铸片经化学破碎和机械破碎后所得粉体粒径更加均匀,富稀土相附着率更高,磁体矫顽力提升。

    COATED MAGNETIC PARTICLE AND METHODS OF MAKING AND USING THE SAME
    7.
    发明申请
    COATED MAGNETIC PARTICLE AND METHODS OF MAKING AND USING THE SAME 审中-公开
    包覆磁性颗粒及其制备和使用方法

    公开(公告)号:WO2016144811A1

    公开(公告)日:2016-09-15

    申请号:PCT/US2016/021024

    申请日:2016-03-04

    CPC classification number: H01F1/0054 B82Y25/00

    Abstract: The present disclosure relates to nano-sized magnetic particles, such as neodymium-iron-boron rare earth magnetic particles, and encapsulated magnetic nanoparticles, which include a magnetic nanoparticle core encapsulated by a protective layer. Magnetic nanoparticles can be encapsulated in, for example, a silane-derivative protective layer or a phosphate-containing protective layer. Also provided are nanocomposite permanent magnets comprising magnetic nanoparticles and encapsulated magnetic nanoparticles. Further provided are methods of making and using the same.

    Abstract translation: 本公开内容涉及纳米尺寸磁性颗粒,例如钕 - 铁 - 硼稀土磁性颗粒和包封的磁性纳米颗粒,其包括由保护层包封的磁性纳米颗粒芯。 磁性纳米粒子可以包封在例如硅烷衍生物保护层或含磷酸盐保护层中。 还提供了包括磁性纳米颗粒和包封的磁性纳米颗粒的纳米复合永磁体。 进一步提供制造和使用它们的方法。

Patent Agency Ranking