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73 条记录 (耗时 0.024 秒)

    Hard magnetic alloy, hard magnetic alloy compact, and method for producing the same
    23.
    发明授权
    Hard magnetic alloy, hard magnetic alloy compact, and method for producing the same 失效
    硬磁合金，硬磁合金，其制造方法

    公开(公告)号：US06171410B2

    公开(公告)日：2001-01-09

    申请号：US09026853

    申请日：1998-02-20

    申请人： Akinori Kojima ,  Akihiro Makino ,  Takashi Hatanai ,  Yutaka Yamamoto ,  Akihisa Inoue

    发明人： Akinori Kojima ,  Akihiro Makino ,  Takashi Hatanai ,  Yutaka Yamamoto ,  Akihisa Inoue

    IPC分类号： H01F104

    CPC分类号： B82Y25/00 ,  H01F1/0579

    摘要： A hard magnetic alloy in accordance with the present invention is composed of at least element T selected from the group consisting of Fe, Co and Ni, at least one rare earth element R, and boron (B). The hard magnetic alloy has an absolute value of the temperature coefficient of magnetization of 0.15%/° C. or less and a coercive force of 1 kOe, when being used in a shape causing a permeance factor of 2 or more. A hard magnetic alloy compact in accordance with the present invention has a texture, in which at least a part or all of the texture comprises an amorphous phase or fine crystalline phase having an average crystal grain size of 100 nm or less, is subjected to crystallization or grain growth under stress, such that a mixed phase composed of a soft magnetic or semi-hard magnetic phase and a hard magnetic phase is formed in the texture, and anisotropy is imparted to the crystal axis of the hard magnetic phase.

    摘要翻译： 根据本发明的硬磁合金由至少选自Fe，Co和Ni，至少一种稀土元素R和硼（B）的元素T组成。 当使用导磁系数为2以上的形状时，硬磁合金的磁化温度的绝对值为0.15％/℃以下，矫顽力为1kOe。 根据本发明的硬磁合金压块具有其中至少部分或全部组织包含平均晶粒尺寸为100nm以下的非晶相或细结晶相的织构，进行结晶化 或在应力下的晶粒生长，使得在织构中形成由软磁性或半硬磁性相和硬磁性相组成的混合相，并且赋予硬磁相的晶轴各向异性。

    Stepping motor and method of manufacturing hard magnetic alloy therefor
    24.
    发明授权
    Stepping motor and method of manufacturing hard magnetic alloy therefor 失效
    步进电机及制造硬磁合金的方法

    公开(公告)号：US6034450A

    公开(公告)日：2000-03-07

    申请号：US111991

    申请日：1998-07-08

    申请人： Akinori Kojima ,  Akihiro Makino ,  Takashi Hatanai ,  Yutaka Yamamoto ,  Akihisa Inoue

    发明人： Akinori Kojima ,  Akihiro Makino ,  Takashi Hatanai ,  Yutaka Yamamoto ,  Akihisa Inoue

    IPC分类号： C22C38/00 ,  H01F1/057 ,  H02K1/02 ,  H02K15/02 ,  H02K37/18 ,  H02K37/00

    CPC分类号： B82Y25/00 ,  H01F1/0571 ,  H01F1/0579 ,  H02K1/02 ,  H02K37/18

    摘要： In a stepping motor having a stator provided with an electromagnet and a rotor composed of a hard magnetic alloy, the hard magnetic alloy comprises at least one element T of Fe and Co, at least one element R of rare earth elements and B, has a remanence ratio of at least 0.7, remanent magnetization (Ir) of at least 120 emu/g and coercive force (iHc) of at least 1 kOe and includes a fine crystalline phase having an average crystal grain size of 100 nm or less as a main phase. The hard magnetic alloy is solidified and compacted by making use of a softening phenomenon which arises when the amorphous phase contained in the structure of the hard magnetic alloy is crystallized. A method of manufacturing the hard magnetic alloy used to the stepping motor is also disclosed.

    摘要翻译： 在具有设置有电磁体的定子和由硬磁合金构成的转子的步进电机中，硬磁合金包括至少一种Fe和Co的元素T，稀土元素和B的至少一个元素R具有 至少为0.7的剩磁比（Ir）至少为120emu / g，矫顽磁力（iHc）为至少1kOe，并且包括平均晶粒尺寸为100nm以下的细晶相为主 相。 通过利用在硬质合金的结构中包含的非晶相结晶时产生的软化现象，硬磁性合金被固化和压实。 还公开了用于步进电动机的硬磁合金的制造方法。

    Fe Based soft magnetic glassy alloy
    28.
    发明授权
    Fe Based soft magnetic glassy alloy 失效
    铁基软磁玻璃合金

    公开(公告)号：US5961745A

    公开(公告)日：1999-10-05

    申请号：US832325

    申请日：1997-03-26

    申请人： Akihisa Inoue ,  Takao Mizushima ,  Kouichi Fujita ,  Oki Yamaguchi ,  Akihiro Makino

    发明人： Akihisa Inoue ,  Takao Mizushima ,  Kouichi Fujita ,  Oki Yamaguchi ,  Akihiro Makino

    IPC分类号： C22C45/02 ,  H01F1/153

    CPC分类号： H01F1/15308

    摘要： The present invention is directed to provide a Fe based glassy alloy which exhibits soft magnetic characteristics at room temperature, has a thickness greater than that of a conventional amorphous alloy prepared by a liquid quenching process and can be easily formed in bulk. The Fe based glassy alloy in accordance with the present invention has a temperature distance .DELTA.T.sub.x, expressed by the equation .DELTA.T.sub.x =T.sub.x -T.sub.g, of a supercooled liquid of not less than 35.degree. C., wherein Tx indicates crystallization temperature and Tg represents glass transition temperature.

    摘要翻译： 本发明旨在提供一种在室温下呈现软磁特性的Fe基玻璃状合金，其厚度大于通过液体淬火工艺制备的常规非晶合金的厚度，并且可以容易地大量地形成。 根据本发明的基于Fe的玻璃状合金具有不低于35℃的过冷液体的由等式DELTA Tx = Tx-Tg表示的温度距离DELTA Tx，其中Tx表示结晶温度，Tg表示 玻璃化转变温度。

    Composite hard magnetic material and method for producing the same
    30.
    发明授权
    Composite hard magnetic material and method for producing the same 失效
    复合硬磁材料及其制造方法

    公开(公告)号：US06425961B1

    公开(公告)日：2002-07-30

    申请号：US09312576

    申请日：1999-05-14

    申请人： Akinori Kojima ,  Akihiro Makino ,  Yutaka Yamamoto ,  Akihisa Inoue

    发明人： Akinori Kojima ,  Akihiro Makino ,  Yutaka Yamamoto ,  Akihisa Inoue

    IPC分类号： H01F1053

    CPC分类号： B82Y25/00 ,  B22F1/0003 ,  B22F1/0044 ,  B22F2999/00 ,  C22C1/0441 ,  H01F1/0576 ,  H01F1/0579 ,  B22F9/002 ,  B22F3/10 ,  B22F9/007

    摘要： The present invention provides a method for producing a composite hard magnetic material, wherein a composite powder—prepared by mixing; a composite hard magnetic material produced by consolidating a composite powder prepared by mixing an alloy powder having an amorphous phase containing a main component Co and at least Sm, and an alloy powder comprising an amorphous phase as a principal phase and containing at least Fe and/or Co, rare earth elements R and B; an alloy powder having an amorphous phase containing a main component Co and at least Sm; and an alloy powder having an amorphous phase containing at least Fe and/or Co, rare earth elements R and B—is consolidated by taking advantage of softening phenomenon caused by crystallization of the amorphous phase in the alloy powder comprising an amorphous phase as a principal phase.

    摘要翻译： 本发明提供一种复合硬磁性材料的制造方法，其中通过混合制备的复合粉末; 通过将通过混合具有含有主成分Co和至少Sm的非晶相的合金粉末制备的复合粉末和包含非晶相作为主相的合金粉末而制成的复合硬磁性材料，并且至少含有Fe和/ 或Co，稀土元素R和B; 具有含有主成分Co和至少Sm的非晶相的合金粉末; 并且具有至少包含Fe和/或Co的非晶相的稀土元素R和B的合金粉末通过利用由非晶相作为主要的合金粉末中的非晶相的结晶引起的软化现象而被固化 相。