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    A rare earth alloy sintered compact
    3.
    发明公开
    A rare earth alloy sintered compact 有权
    Seltenerdlegierungs烧结块

    公开(公告)号：EP1645648A1

    公开(公告)日：2006-04-12

    申请号：EP05018913.3

    申请日：2002-03-29

    申请人： Neomax Co., Ltd.

    发明人： Morimoto, Hitoshi ,  Kaneko, Yuji

    IPC分类号： C22C33/02 ,  H01F1/057

    CPC分类号： H01F1/058 ,  B22F1/0003 ,  B22F2998/10 ,  C22C1/0441 ,  H01F1/0571 ,  H01F1/0577 ,  H01F41/0293 ,  B22F3/1017 ,  B22F3/10

    摘要： A rare earth alloy sintered compact includes a main phase represented by (LR 1-x HR x ) 2 T 14 A, where T is Fe with or without non-Fe transition metal element(s); A is boron with or without carbon; LR is a light rare earth element; HR is a heavy rare earth element; and 0 1-x HR x ) 2 T 14 A, thereby obtaining a mixed powder, and sintering the mixed powder. The alloy materials include first and second rare earth alloy materials represented by (LR 1-u HR u ) 2 T 14 A (where 0≦u 1-v HR v ) 2 T 14 A (where x

    摘要翻译： 稀土合金烧结体包括由（LR 1-x HR x）2 T 14 A表示的主相，其中T是具有或不具有非Fe过渡金属元素的Fe; A是具有或不具有碳的硼; LR是轻稀土元素; HR是重稀土元素; 0

    Method for manufacturing a rear earth magnet
    4.
    发明公开
    Method for manufacturing a rear earth magnet 有权
    Herstellungsverfahren eines Seltenerd-Magnets

    公开(公告)号：EP1486989A1

    公开(公告)日：2004-12-15

    申请号：EP04022559.1

    申请日：2001-09-18

    申请人： Neomax Co., Ltd.

    发明人： Kuniyoshi, Futoshi ,  Morimoto, Hitoshi

    IPC分类号： H01F1/057

    CPC分类号： H01F1/0557 ,  H01F1/0573 ,  H01F1/0577 ,  H01F41/0266

    摘要： Rare earth alloy powder having an oxygen content of 50 to 4000 wt. ppm and a nitrogen content of 150 to 1500 wt. ppm is compacted by dry pressing to produce a compact. The compact is impregnated with an oil agent and then sintered. The sintering process includes a first step of retaining the compact at a temperature of 700°C to less than 1000°C for a period of time of 10 to 420 minutes and a second step of permitting proceeding of sintering at a temperature of 1000°C to 1200°C. The average crystal grain size of the rare earth magnet after the sintering is controlled to be 3 µ m to 9 µ m.

    摘要翻译： 氧含量为50〜4000重量％的稀土类合金粉末 ppm，氮含量为150〜1500重量％。 通过干压将ppm压实以产生紧凑。 压块用油剂浸渍，然后烧结。 该烧结工序包括在700℃〜1000℃的温度下将成形体保持10〜420分钟的第一工序，在1000℃的温度下进行烧结的第二工序 1200℃。烧结后的稀土类磁铁的平均结晶粒径控制在3μm〜9μm。