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    POWDER FOR MAGNETIC MEMBER, POWDER COMPACT, AND MAGNETIC MEMBER
    1.
    发明公开
    POWDER FOR MAGNETIC MEMBER, POWDER COMPACT, AND MAGNETIC MEMBER 审中-公开
    PULVERFÜREIN MAGNETELEMENT，PULVERPRESSLING UND MAGNETELEMENT

    公开(公告)号：EP2484464A1

    公开(公告)日：2012-08-08

    申请号：EP11783414.3

    申请日：2011-05-10

    Applicant: Sumitomo Electric Industries, Ltd.

    Inventor： MAEDA, Toru ,  WATANABE, Asako

    IPC: B22F1/02 ,  B22F1/00 ,  B22F3/24 ,  C22C33/02 ,  H01F1/053 ,  H01F1/06 ,  H01F1/08

    CPC classification number: H01F1/0552 ,  B22F1/0062 ,  B22F2998/10 ,  C22C33/0278 ,  C22C38/002 ,  C22C38/005 ,  C22C2202/02 ,  H01F1/0572 ,  H01F1/0573 ,  H01F1/0575 ,  H01F1/0576 ,  H01F1/0578 ,  H01F1/061 ,  H01F1/083 ,  H01F41/0293 ,  B22F3/02 ,  B22F2003/248

    Abstract: The present invention provides a powder for a magnetic member being excellent in moldability and difficult to oxidize, a powder compact produced from the powder, and a magnetic member suitable for a raw material of a magnetic member such as a rare earth magnet. A powder for a magnetic member includes magnetic particles 1 which constitute the powder for a magnetic member and each of which is composed of less than 40% by volume of a hydrogen compound 3 of a rare earth element, and the balance composed of an iron-containing material 2 which contains iron and an iron-boron alloy containing iron and boron. The hydrogen compound 3 of a rare earth element is dispersed in a phase of the iron-containing material 2. An antioxidant layer 4 having a low-oxygen permeability coefficient is provided on the surface of each of the magnetic particles 1. Since the phase of the iron-containing material 2 is uniformly present in each of the magnetic particles 1, the powder has excellent moldability and the density of a powder compact can be easily increased. By providing the antioxidant layer 4, oxidation of a newly formed surface formed on each of the magnetic particle 1 during molding is little oxidized, and a decrease in a magnetic phase ratio due to the presence of an oxide can be suppressed.

    Abstract translation: 本发明提供了一种用于磁性构件的粉末，其成型性和难以氧化性优异，由粉末制成的粉末压块，以及适用于诸如稀土磁体的磁性构件的原料的磁性构件。 磁性部件用粉末包括构成磁性部件用粉末的磁性粒子1，其各自由少于40体积％的稀土元素的氢化合物3构成，余量由铁 - 其含有铁和含有铁和硼的铁 - 硼合金。 稀土元素的氢化合物3分散在含铁材料2的相中。在每个磁性粒子1的表面上设置有具有低氧透过系数的抗氧化层4。 含铁材料2均匀地存在于每个磁性颗粒1中，粉末具有优异的成型性，并且粉末压块的密度可以容易地增加。 通过设置抗氧化剂层4，在模制期间形成在每个磁性颗粒1上的新形成的表面的氧化几乎不被氧化，并且可以抑制由于存在氧化物而引起的磁相比的降低。

    POWDER FOR MAGNET
    2.
    发明公开
    POWDER FOR MAGNET 审中-公开
    PULVERFÜREINEN MAGNETEN

    公开(公告)号：EP2481502A1

    公开(公告)日：2012-08-01

    申请号：EP11768887.9

    申请日：2011-04-13

    Applicant: Sumitomo Electric Industries, Ltd.

    Inventor： MAEDA, Toru ,  WATANABE, Asako

    IPC: B22F1/00 ,  B22F3/00 ,  B22F3/02 ,  B22F3/10 ,  C22C33/02 ,  H01F1/053 ,  H01F1/06 ,  H01F1/08 ,  H01F41/02

    CPC classification number: B22F3/02 ,  B22F3/101 ,  B22F3/24 ,  B22F9/023 ,  C22C33/0278 ,  H01F1/0551 ,  H01F1/0573 ,  H01F1/0578 ,  H01F41/0273 ,  Y10T428/2982

    Abstract: The present invention provides a powder for a magnet which can form a rare earth magnet having excellent magnetic characteristics and which has excellent moldability, a method for producing the powder for a magnet, a powder compact, and a rare earth-iron-boron-based alloy material.
    Magnetic particles constituting a powder for a magnet each include a structure in which a particle of a phase 3 of a hydrogen compound of a rare earth element is dispersed in a phase 2 of an iron-containing material. Since the phase 2 of the iron-containing material is uniformly present in each of the magnetic particles 1, the powder has excellent moldability and easily increases the density of a powder compact 4. The powder for a magnet can be produced by heat-treating a powder of a rare earth-iron-boron-based alloy (R-Fe-B-based alloy) in a hydrogen atmosphere at a temperature equal to or higher than the disproportionation temperature of the R-Fe-B-based alloy to separate the powder into the rare earth element and the iron-containing material and to produce the hydrogen compound of the rare earth element. The powder compact 4 is produced by compacting the powder for a magnet. The powder compact 4 is heat-treated in a vacuum to produce a R-Fe-B-based alloy material 5, and the R-Fe-B-based alloy 5 is magnetized to produce a R-Fe-B-based alloy magnet 6.

    Abstract translation: 本发明提供一种能够形成具有优异的磁特性并且具有优异成型性的稀土磁体的磁体粉末，用于制造用于磁体的粉末的方法，粉末压块和稀土 - 铁 - 硼基 合金材料。 构成磁铁粉末的磁性粒子各自包含将稀土元素的氢化合物的相3的粒子分散在含铁材料的相2中的结构。 由于含铁材料的相2均匀地存在于每个磁性颗粒1中，粉末具有优异的成型性，并且容易增加粉末压块4的密度。用于磁体的粉末可以通过热处理 在等于或高于R-Fe-B基合金的歧化温度的温度下，在氢气氛中稀土 - 铁 - 硼基合金粉末（R-Fe-B系合金），以分离 粉末进入稀土元素和含铁材料，并产生稀土元素的氢化合物。 粉末压块4是通过压实用于磁体的粉末来制造的。 粉末压块4在真空中进行热处理以制造R-Fe-B系合金材料5，将R-Fe-B系合金5磁化，生成R-Fe-B系合金磁铁 6。

    RARE EARTH-IRON-NITROGEN SYSTEM ALLOY MATERIAL, METHOD FOR PRODUCING RARE EARTH-IRON-NITROGEN SYSTEM ALLOY MATERIAL, RARE EARTH-IRON SYSTEM ALLOY MATERIAL, AND METHOD FOR PRODUCING RARE EARTH-IRON SYSTEM ALLOY MATERIAL
    4.
    发明公开
    RARE EARTH-IRON-NITROGEN SYSTEM ALLOY MATERIAL, METHOD FOR PRODUCING RARE EARTH-IRON-NITROGEN SYSTEM ALLOY MATERIAL, RARE EARTH-IRON SYSTEM ALLOY MATERIAL, AND METHOD FOR PRODUCING RARE EARTH-IRON SYSTEM ALLOY MATERIAL 审中-公开
    稀土 - 铁 - 氮系合金材料，工艺用于生产稀土 - 铁 - 氮系合金材料，稀土 - 铁系合金材料及其制备方法稀土 - 铁系合金材料

    公开(公告)号：EP2608224A1

    公开(公告)日：2013-06-26

    申请号：EP12789772.6

    申请日：2012-05-22

    Applicant: Sumitomo Electric Industries, Ltd.

    Inventor： MAEDA, Toru ,  WATANABE, Asako ,  NAGASAWA, Motoi ,  KATO, Takeshi

    IPC: H01F1/055 ,  B22F1/00 ,  B22F3/00 ,  B22F3/10 ,  C22C33/02 ,  C22C38/00 ,  H01F1/08 ,  H01F41/02

    CPC classification number: H01F1/053 ,  B22F3/087 ,  B22F3/1017 ,  B22F2998/10 ,  B22F2999/00 ,  C22C38/001 ,  C22C38/005 ,  C22C38/04 ,  C22C38/14 ,  H01F1/0573 ,  H01F1/059 ,  H01F41/0246 ,  H01F41/0266 ,  Y10T428/31678 ,  B22F1/0088 ,  B22F2201/013 ,  B22F2201/20 ,  B22F2201/10 ,  B22F3/02 ,  B22F2201/02

    Abstract: The present invention provides a rare earth-iron-nitrogen-based alloy material which can produce a rare earth magnet having excellent magnetic characteristics and a method for producing the same, a rare earth-iron-based alloy material suitable as a raw material of the rare earth magnet and a method for producing the alloy material. A rare earth-iron-based alloy material is heat-treated in a hydrogen-containing atmosphere to produce a multi-phase powder 1 in which a phase 3 of a hydrogen compound of a rare earth element is dispersedly present in a phase 2 of an iron-containing material. A powder compact 4 produced by compression-molding the multi-phase powder 1 is heat-treated in a vacuum with a magnetic field of 3 T or more applied, thereby forming a rare earth-iron-based alloy material 5. The rare earth-iron-based alloy material 5 is heat-treated in a nitrogen atmosphere with a magnetic field of 3.5 T or more applied, thereby forming a rare earth-iron-nitrogen-based alloy material 6. The rare earth-iron-based alloy material 5 has a structure in which a crystal of a rare earth-iron-based alloy is oriented in the c-axis direction. The rare earth-iron-nitrogen-based alloy material 6 composed of an ideal nitride can be formed by nitriding the rare earth-iron-based alloy material 5 having this oriented structure with the magnetic field applied, and a rare earth magnet 7 having excellent magnetic characteristics can be formed.

    Abstract translation: 本发明提供能够生产具有优异的磁特性和其制造中，稀土类 - 铁系合金材料适合作为的原料的方法的稀土类磁铁的稀土类 - 铁 - 氮的合金材料 稀土类磁铁及其制造合金材料的方法。 在含氢气氛中的稀土类 - 铁系合金材料进行热处理，以产生多相粉末1，其中的稀土元素的氢化合物的相图3是在一个阶段2分散存在 材料含铁。 通过压缩成形多相粉末1产生紧凑的粉末4进行热处理，在真空与3T或更高的应用的磁场，从而形成稀土类 - 铁系合金材料5.稀土 铁基合金材料5进行热处理在氮气氛中以3.5吨或更多的应用的磁场，从而形成稀土 - 铁 - 氮系合金材料6.稀土类 - 铁系合金材料5 具有其中稀土类 - 铁的合金的晶体在c轴方向上取向的结构。 一个理想的氮化物组成的稀土 - 铁 - 氮基合金材料6可以通过氮化具有与所述磁场应用这种定向结构的稀土类 - 铁系合金材料5形成，并且稀土磁体7具有优异的 磁特性可以形成。

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