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    Magnetostrictive composites
    41.
    发明公开
    Magnetostrictive composites 失效
    Magnetostriktive Zusammensetzungen

    公开(公告)号：EP0817286A1

    公开(公告)日：1998-01-07

    申请号：EP97201709.9

    申请日：1997-06-05

    Applicant: GENERAL MOTORS CORPORATION

    Inventor： Herbst, Jan Francis ,  Pinkerton, Frederick Eugene ,  Brewer, Earl George ,  Capehart, Tenneille Weston ,  Murphy, Charles Bernard

    IPC: H01L41/20

    CPC classification number: H01L41/20

    Abstract: Composite bodies of magnetostrictive materials of the type RE-Fe 2 , where RE is one or more of the rare earth elements, preferably samarium or terbium, can be suitably hot pressed with a matrix metal selected from the group consisting of aluminum, copper, iron, magnesium or nickel to form durable and machinable magnetostrictive composites still displaying appreciable magnetostrictive strains.

    Abstract translation: 其中RE是一种或多种稀土元素，优选钐或铽的类型为RE-Fe2的磁致伸缩材料的复合体可以用选自铝，铜，铁， 镁或镍，以形成仍然显示明显的磁致伸缩应变的耐用且可机械加工的磁致伸缩复合材料。

    Method for manufacturing alloy rod having giant magnetostriction
    43.
    发明公开
    Method for manufacturing alloy rod having giant magnetostriction 失效
    Verfahren zur Herstellung eines Stabes aus einer supermagnetostriktiven Legierung。

    公开(公告)号：EP0405360A1

    公开(公告)日：1991-01-02

    申请号：EP90111886.9

    申请日：1990-06-22

    Applicant: NKK CORPORATION ,  Japan Marine Science and Technology Center ,  Oki Electric Industry Co., Ltd.

    Inventor： Murakami, Katsuhiko, c/o NKK Corporation ,  Yamagami, Nobuo, c/o NKK Corporation ,  Nakanishi, Toshiyuki, c/o Japan Marine Science and ,  Nakano, Iwao, c/o Japan Marine Science and ,  Kobayashi, Keiichi, Oki Electric Industry Co. Ltd. ,  Yoshikawa, Takashi, Oki Electric Industry Co. Ltd.

    IPC: C30B13/00 ,  C30B29/52 ,  H01L41/20

    CPC classification number: H01L41/20 ,  C30B13/00 ,  C30B29/52

    Abstract: A method for manufacturing an alloy rod having giant magnetostriction, which comprises the steps of: supplying a rod-shaped alloy material, comprising at least two rare earth metals including terbium and dysprosium and at least one transition metal, into a crucible moving down­wardly at a speed of from 0.2 to 8.5 mm/minute in an inert gas atmosphere kept under a pressure of from 0.2 to 10 atm.; heating the rod-shaped alloy material in the circumferential direction thereof in the crucible by means of an annular high-frequency heating coil having a frequency of from 0.1 to 3 MHz and having an inside diameter of from 1.1 to 1.6 times as large as an outside diameter of the crucible, arranged so as to surround the crucible; continuously moving the heating from the lower end toward the upper end of the alloy material to locally and sequentially melt the alloy material in the axial direction thereof; and then locally and sequentially solidifying the resultant molten section of the alloy material in the crucible, thereby manufac­turing an alloy rod having giant magnetostriction com­prising a single-crystal structure or a unidirectional-­solidification structure consistent with the axial line thereof.

    Abstract translation: 一种用于制造具有巨磁致伸缩的合金棒的方法，其包括以下步骤：将包括至少两种稀土金属（包括铽和镝）和至少一种过渡金属的棒状合金材料供应到在 速度为0.2〜8.5mm /分钟，保持在0.2〜10atm的压力下的惰性气体气氛中。 通过频率为0.1〜3MHz，内径为外径的1.1〜1.6倍的环状高频加热线圈，在棒状坩埚中沿圆周方向加热棒状合金材料 所述坩埚的直径设置成围绕所述坩埚; 从合金材料的下端朝向上端继续加热，使合金材料在其轴向方向局部依次熔融; 然后在坩埚中局部并依次固化合金材料的熔融部分，由此制造具有与其轴线一致的单晶结构或单向凝固结构的具有巨磁致伸缩性的合金棒。

    Magnetostrictive drive module
    44.
    发明公开
    Magnetostrictive drive module 失效
    磁力驱动模块

    公开(公告)号：EP0251468A3

    公开(公告)日：1989-08-09

    申请号：EP87304440.8

    申请日：1987-05-19

    Applicant: RAYTHEON COMPANY

    Inventor： Porzio, Raymond ,  Sturges, James R. ,  Harrold, William J.

    IPC: H01L41/12 ,  H01L41/20

    CPC classification number: H01L41/12 ,  B06B1/0618 ,  B06B1/085

    Abstract: The drive modules (10) of a magnetostrictive transducer are fabricated from interleaved permanent magnet disks (2) (samarium cobalt) and high-strain, low-permeability magnetostrictive lanthanide alloy (Terfenol-D) disks (1) to form a stack (11) of such interleaved materials of substantially uniform magnetic field distribution in the stack. Two such stacks (11) in side-by-side relationship provide a series-aiding magnetic circuit completed through high-permeability flux return pole pieces (4) at their ends thereby providing a substantially uniform magnetic field distribution in the stack (11). Each stack (11) has longitudinally-­extending and electrically-insulated planar cuts and each flux return pole piece (4) is a laminate of thin sheets of high-­permeability electrically-insulated steel to reduce eddy current losses resulting from the AC field. The steel sheets are constrained by a nonmagnetic end-block (5) into which the steel sheets are inserted and bonded. AC coils (3) surround the stacks (11) to provide the AC field.

    POWER-GENERATING MAGNETOSTRICTOR AND MAGNETOSTRICTIVE POWER GENERATION DEVICE
    47.
    发明公开
    POWER-GENERATING MAGNETOSTRICTOR AND MAGNETOSTRICTIVE POWER GENERATION DEVICE 审中-公开

    公开(公告)号：EP4083240A2

    公开(公告)日：2022-11-02

    申请号：EP20908324.5

    申请日：2020-12-24

    Applicant: NIPPON STEEL Chemical & Material Co., Ltd.

    Inventor： SAKAMOTO, Hiroaki ,  TANABE, Masao

    IPC: C21D9/00 ,  C21D9/46 ,  C22C14/00 ,  C22C19/07 ,  C22C38/00 ,  C22C38/02 ,  C22F1/00 ,  C22F1/10 ,  H01L41/06 ,  H01L41/12 ,  H01L41/20 ,  H02N2/18

    Abstract: The present invention addresses the problem of providing a power-generating magnetostrictive element and a magnetostrictive power generation device, which can achieve the same or a greater magnetostrictive power generation amount compared to conventional technology while also employing materials lower in cost compared to conventional materials currently used as magnetostrictive materials for magnetostrictive power-generating elements. The aforementioned problem is solved by providing: a power-generating magnetostrictive element that includes a magnetostrictive part formed from an electromagnetic metal sheet; and a magnetostrictive power generation device that is equipped with a power-generating magnetostrictive element including a magnetostrictive part formed from an electromagnetic metal sheet. The present invention also addresses the problem of providing a power-generating magnetostrictive element and a magnetostrictive power generation device, which have high voltage and little variation. The aforementioned problem is solved by providing: a power-generating magnetostrictive element that has a magnetostrictive part formed from a magnetostrictive material, and a stress control part formed from an elastic material, with the respective Young's moduli and thicknesses of the magnetostrictive material and the elastic material simultaneously satisfying specific relationships; and a magnetostrictive power generation device that is equipped with said power-generating magnetostrictive element.

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