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    Rare earth bonded magnet and composition therefor
    2.
    发明授权
    Rare earth bonded magnet and composition therefor 失效
    稀土粘结磁铁及其组成

    公开(公告)号：US5888417A

    公开(公告)日：1999-03-30

    申请号：US732967

    申请日：1996-10-16

    申请人： Koji Akioka ,  Hayato Shirai ,  Ken Ikuma

    发明人： Koji Akioka ,  Hayato Shirai ,  Ken Ikuma

    IPC分类号： H01F1/053 ,  H01F1/08 ,  H01F1/055 ,  H01F1/057 ,  H01F1/059

    CPC分类号： H01F1/0533 ,  Y10S977/838

    摘要： A rare earth bonded magnet formed by bonding a rare earth magnet powder with a binding resin contains the rare earth magnet powder, and a thermoplastic resin serving as the binding resin in an amount within a range of from 1 to 5 wt. %, and preferably further contains an oxidation inhibitor. As the rare earth magnet powder, for example, at least one of an Sm--Co alloy, an R--Fe--B alloy (where, R represents at least a kind of rare earth elements including Y) and an Sm--Fe--N alloy can be appropriately used. As the thermoplastic resin, for example, polyamide, a liquid crystal polymer, or a PPS is appropriately employed. As the oxidation inhibitor, a chelating agent is appropriately applicable. In such a rare earth bonded magnet, the thermoplastic resin covers the outer surface of the rare earth magnet powder 2, and is present so as to prevent particles of the magnet powder from coming into contact with each other. Such a rare earth bonded magnet should preferably have a void ratio of no more than 2 vol. %.

    摘要翻译： 通过将稀土类磁体粉末与粘合树脂结合而形成的稀土类粘结磁铁含有稀土类磁体粉末和作为粘合树脂的热塑性树脂，其量为1〜5重量％。 ％，优选还含有氧化抑制剂。 作为稀土类磁体粉末，例如可以使用Sm-Co合金，R-Fe-B系合金（其中，R表示至少一种含有Y的稀土元素的种类）和Sm-Fe-N 合金可以适当使用。 作为热塑性树脂，可以适当使用聚酰胺，液晶聚合物，PPS等。 作为氧化抑制剂，螯合剂适用。 在这种稀土类粘结磁体中，热塑性树脂覆盖稀土类磁体粉末2的外表面，并且存在以防止磁铁粉末的粒子彼此接触。 这种稀土类粘结磁体优选具有不大于2体积的空隙率。 ％。

    Rare-earth bonded magnet, material and method for manufacturing the same
    4.
    发明授权
    Rare-earth bonded magnet, material and method for manufacturing the same 失效
    稀土粘结磁体，材料及其制造方法

    公开(公告)号：US5393445A

    公开(公告)日：1995-02-28

    申请号：US176645

    申请日：1994-01-03

    申请人： Takashi Furuya ,  Naoki Hayashi

    发明人： Takashi Furuya ,  Naoki Hayashi

    IPC分类号： H01F1/053 ,  H01F1/057 ,  H01F1/059

    CPC分类号： H01F1/0578 ,  H01F1/0533 ,  H01F1/0572 ,  H01F1/059 ,  Y10S428/90 ,  Y10T428/2982 ,  Y10T428/2991 ,  Y10T428/2998

    摘要： A material for a rare-earth bonded magnet is prepared by coating a rare-earth magnetic powder with a heat resisting addition polymerizable thermosetting resin consisting essentially of a monomer or polymer of 2,2-bis(cyanatophenyl) propane in an amount of not more than 2 wt % based on the weight of the magnetic powder. The oxidation of the rare-earth magnetic powder is thereby prevented or retarded by triazine rings formed in the coating film of the heat resisting addition polymerizable thermosetting resin. A rare-earth bonded magnet having improved heat resistance is prepared by agglomerating the coated rare-earth magnetic powder with a binder. The heat resistance of the bonded magnet is further improved by curing the heat resisting addition polymerizable thermosetting resin in a vacuum and by adding an organometallic salt as a metallic catalyst, to thereby improve the integrity of the coating film.

    摘要翻译： 通过用基本上由2,2-双（氰基苯基）丙烷的单体或聚合物组成的耐热性可加聚热固性树脂涂覆稀土磁性粉末，制备稀土粘结磁体的材料，其量不超过 超过2重量％，基于磁粉的重量。 由此，可以通过在耐热性可加聚热固性树脂的涂膜中形成的三嗪环来防止或延缓稀土类磁粉的氧化。 通过将涂覆的稀土磁性粉末与粘合剂团聚来制备具有改善的耐热性的稀土粘结磁体。 通过在真空中固化耐热性可加聚热固性树脂并通过添加作为金属催化剂的有机金属盐，进一步提高粘结磁体的耐热性，从而提高涂膜的完整性。

    Rare earth bonded magnet
    6.
    发明授权
    Rare earth bonded magnet 有权
    稀土粘结磁铁

    公开(公告)号：US08404141B2

    公开(公告)日：2013-03-26

    申请号：US12726784

    申请日：2010-03-18

    申请人： Noboru Menjo ,  Kinji Uchiyama ,  Yuki Takeda

    发明人： Noboru Menjo ,  Kinji Uchiyama ,  Yuki Takeda

    IPC分类号： H01F7/02 ,  H01F3/08

    CPC分类号： H01F1/0578 ,  H01F1/0533 ,  H01F1/0558 ,  H01F41/0266

    摘要： A rare earth bonded magnet is provided which is produced such that a mixture which comprises: a rare earth magnet powder; a resin binder comprising a thermosetting resin; an organic phosphorus compound; and a coupling agent is compress-molded, heated and cured, wherein the organic phosphorus compound and the coupling agent are represented by the following respective chemical formulas (structural formulas):

    摘要翻译： 提供一种稀土粘结磁体，其制造成使得包括稀土类磁体粉末的混合物; 包含热固性树脂的树脂粘合剂; 有机磷化合物; 并且偶联剂被压制，加热和固化，其中有机磷化合物和偶联剂由以下各自的化学式（结构式）表示：

    Batch fabrication of precision miniature permanent magnets
    7.
    发明授权
    Batch fabrication of precision miniature permanent magnets 有权
    批量制造精密微型永磁体

    公开(公告)号：US06375759B1

    公开(公告)日：2002-04-23

    申请号：US09452321

    申请日：1999-11-30

    申请人： Todd R. Christenson ,  Terry J. Garino ,  Eugene L. Venturini

    发明人： Todd R. Christenson ,  Terry J. Garino ,  Eugene L. Venturini

    IPC分类号： H01F1053

    CPC分类号： H01F1/0533 ,  H01F41/0266 ,  H01F41/0273 ,  H01F41/16

    摘要： A new class of processes for fabrication of precision miniature rare earth permanent magnets is disclosed. Such magnets typically have sizes in the range 0.1 to 10 millimeters, and dimensional tolerances as small as one micron. Very large magnetic fields can be produced by such magnets, lending to their potential application in MEMS and related electromechanical applications, and in miniature millimeter-wave vacuum tubes. This abstract contains simplifications, and is supplied only for purposes of searching, not to limit or alter the scope or meaning of any claims herein.

    摘要翻译： 公开了一类用于制造精密微型稀土永磁体的新工艺。 这种磁体通常具有在0.1至10毫米范围内的尺寸，以及小到1微米的尺寸公差。 可以通过这样的磁体产生非常大的磁场，从而在MEMS和相关的机电应用中以及在微型毫米波真空管中潜在地应用它们。 该摘要包含简化，并且仅为了搜索而提供，而不是限制或改变本文中任何权利要求的范围或含义。

    Rare-earth bonded magnet composition, rare-earth bonded magnet and process for producing said rare-earth bonded magnet
    10.
    发明授权
    Rare-earth bonded magnet composition, rare-earth bonded magnet and process for producing said rare-earth bonded magnet 失效
    稀土粘结磁体组合物，稀土粘结磁体及其制造方法

    公开(公告)号：US5888416A

    公开(公告)日：1999-03-30

    申请号：US331670

    申请日：1995-02-13

    申请人： Ken Ikuma ,  Toshiyuki Ishibashi ,  Koji Akioka

    发明人： Ken Ikuma ,  Toshiyuki Ishibashi ,  Koji Akioka

    IPC分类号： B22F1/00 ,  H01F1/053 ,  H01F1/055 ,  H01F1/057 ,  H01F1/08 ,  H01F41/02

    CPC分类号： B22F1/0059 ,  H01F1/0533 ,  H01F1/0558 ,  H01F1/0578 ,  H01F1/083 ,  H01F41/0253 ,  H01F41/0266 ,  Y10S264/61 ,  Y10T29/49075

    摘要： The addition of a chelating agent or a chelating agent and an antioxidant in combination to a rare-earth bonded magnet composition and a rare-earth bonded magnet comprising a rare-earth magnetic powder and a resin component can provide improved moldability and magnets having high performance and high corrosion resistance. Further, the regulation of property values of the magnet composition enables the occurrence of troubles to be avoided during molding, resulting in improved productivity. Furthermore, the use of at least two resins as a resin component in an extruding composition contributes to improvement in moldability and consequently increase in throughput. Furthermore, the use of extrusion, involving setting by cooling, and not compression molding in the production of magnets can provide high-density, high-performance magnets.

    摘要翻译： PCT No.PCT / JP93 / 00611 Sec。 371日期1995年2月13日 102（e）日期1995年2月13日PCT提交1993年5月11日PCT公布。 公开号WO93 / 23858 日期：1993年11月25日将螯合剂或螯合剂和抗氧化剂组合添加到稀土类粘结磁体组合物和包含稀土类磁性粉末和树脂组分的稀土类粘结磁体中可以提供改善的成型性 和具有高性能和高耐腐蚀性的磁体。 此外，磁体组合物的特性值的调整能够在成型时避免发生故障，从而提高生产率。 此外，在挤出组合物中使用至少两种树脂作为树脂组分有助于改善成型性，从而提高生产量。 此外，使用挤出技术，包括通过冷却进行设置，而不是在制造磁体时进行压缩成型，可以提供高密度，高性能的磁体。