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    Method of making sintered compact for rare earth magnet
    4.
    发明授权
    Method of making sintered compact for rare earth magnet 有权
    制造稀土磁体烧结体的方法

    公开(公告)号：US07056393B2

    公开(公告)日：2006-06-06

    申请号：US10381007

    申请日：2002-05-28

    申请人： Koki Tokuhara ,  Hitoshi Morimoto

    发明人： Koki Tokuhara ,  Hitoshi Morimoto

    IPC分类号： H01F1/057

    CPC分类号： H01F1/0573 ,  H01F1/0577 ,  H01F41/0293

    摘要： A method of making a sintered body for a rare earth magnet includes the steps of (a) preparing a first coarse powder by coarsely pulverizing a rare earth alloy sintered body by a hydrogen pulverization process, (b) preparing a first fine powder by finely pulverizing the first coarse powder, (c) preparing a second fine powder by pulverizing an alloy block of a rare earth alloy material, and (d) sintering a mixed powder including the first and second fine powders. The first and second fine powders each includes a main phase represented by (LR1-xHRx)2T14A, where T is Fe and/or at least one non-Fe transition metal element; A is boron and/or carbon; LR is at least one light rare earth element; HR is at least one heavy rare earth element; and 0≦x

    摘要翻译： 制造稀土类磁铁烧结体的方法包括以下步骤：（a）通过氢粉碎法粗粉碎稀土合金烧结体来制备第一粗粉末，（b）通过细粉碎制备第一细粉末 第一粗粉末，（c）通过粉碎稀土合金材料的合金块来制备第二细粉末，以及（d）烧结包含第一和第二细粉末的混合粉末。 第一和第二细粉末各自包括由（LR 1-x x H 2）2 N 2 T 14表示的主相， SUB> A，其中T是Fe和/或至少一种非Fe过渡金属元素; A是硼和/或碳; LR是至少一种轻稀土元素; HR是至少一种重稀土元素; 0 <= x <1。

    Process for producing alloy powder material for R-Fe-B permanent magnets and alloy powder for adjusting the composition therefor
    6.
    发明授权
    Process for producing alloy powder material for R-Fe-B permanent magnets and alloy powder for adjusting the composition therefor 失效
    制造用于R-Fe-B永磁体的合金粉末材料和用于调整其组成的合金粉末的方法

    公开(公告)号：US5387291A

    公开(公告)日：1995-02-07

    申请号：US032101

    申请日：1993-03-17

    申请人： Yuji Kaneko ,  Koki Tokuhara

    发明人： Yuji Kaneko ,  Koki Tokuhara

    IPC分类号： H01F1/057 ,  H01F1/02

    CPC分类号： H01F1/0577 ,  H01F1/0571

    摘要： A process for producing a starting powder material for use in the fabrication of high performance R--Fe--B permanent magnets comprising an R.sub.2 Fe.sub.14 B compound as the principal phase, which is characterized by adding 70% by weight or less of a specified alloy powder for adjusting the composition comprising an R.sub.2 Fe.sub.17 compound to a specified principal phase R--Fe--B alloy powder comprising an R.sub.2 Fe.sub.14 B compound as the principal phase. This process enables production of a starting alloy powder material considerably reduced in contents of the unfavorable B-rich and R-rich phases which impair the magnetic properties of the final magnet, because the starting powder blend allows the B-rich and R-rich compounds in the principal phase alloy powder to react with the R.sub.2 Fe.sub.17 compound being incorporated in the alloy powder for adjusting the composition.

    摘要翻译： 一种用于制造用于制造以R 2 Fe 14 B化合物为主相的高性能R-Fe-B永磁体的起始粉末材料的方法，其特征在于加入70重量％或更少的用于调节的特定合金粉末 该组合物包含R2Fe17化合物与包含R2Fe14B化合物作为主相的指定主相R-Fe-B合金粉末。 由于起始粉末混合物允许富含B的富含R的化合物，所以这种方法能够生产显着减少不利的富B相和富R相的含量的起始合金粉末材料，从而损害最终磁体的磁特性 在主相合金粉末中与掺入合金粉末中的R2Fe17化合物反应以调节组成。

    Monolithically bonded construct of rare-earth magnet and metal material and method for bonding same
    8.
    发明授权
    Monolithically bonded construct of rare-earth magnet and metal material and method for bonding same 有权
    稀土磁体和金属材料的单片结合构造及其结合方法

    公开(公告)号：US06331214B1

    公开(公告)日：2001-12-18

    申请号：US09155094

    申请日：1998-09-21

    申请人： Masaki Koga ,  Nobutaka Suzuki ,  Hitoshi Saitoh ,  Kenshiro Oyamada ,  Koki Tokuhara ,  Shuji Mino ,  Naoyuki Ishigaki ,  Hitoshi Yamamoto

    发明人： Masaki Koga ,  Nobutaka Suzuki ,  Hitoshi Saitoh ,  Kenshiro Oyamada ,  Koki Tokuhara ,  Shuji Mino ,  Naoyuki Ishigaki ,  Hitoshi Yamamoto

    IPC分类号： H01F1053

    CPC分类号： H02K1/278 ,  B23K20/021 ,  B23K20/023 ,  B23K20/16 ,  H01F1/055 ,  H01F1/057 ,  H01F41/026 ,  H02K1/02 ,  H02K1/2726 ,  H02K15/03 ,  Y10S428/928 ,  Y10T428/12076 ,  Y10T428/12465 ,  Y10T428/12806 ,  Y10T428/12931 ,  Y10T428/12944 ,  Y10T428/12951 ,  Y10T428/12979

    摘要： Its basic means is a monolithically bonded construct prepared by monolithically bonding together a rare-earth magnet 2 and a an alloy material that is a high melting point metal or a high specific-tenacity material through the solid phase diffusion bonding by the hot isostatic pressing treatment, and a monolithically bonded construct with an interposal of a thin layer of the high melting point metal between a rare-earth magnet 2 and an alloy material 3, 4 that is a high specific-tenacity material. As a method for the bonding, there is used a hot isostatic pressing treatment method in which a rare-earth An magnet and a high melting-point metal are laminated together, thereby to prepare an object to be treated, then the object is put into a hermetic-type high pressure container having an inner wall portion equipped with a heater, then the object is uniformly pressurized in all directions by a synergistic effect caused by pressure and temperature, while the object is maintained for a certain period of time under a certain pressure and temperature condition in an atmosphere of an inert gas, thereby to monolithically bond the object. With this, it is possible to obtain a bonded construct in which a magnet can monolithically be bonded with another metal member with a high strength, without deteriorating magnetic characteristics, such that the rare-earth magnet's insufficiency in brittleness, rigidity, tenacity and the like is compensated.

    摘要翻译： 其基本手段是通过通过热等静压处理的固相扩散接合将稀土类磁体2与作为高熔点金属或高比强度材料的合金材料进行单片接合而制成的单片结合体 ，以及在稀土类磁体2和作为高强度材料的合金材料3,4之间具有高熔点金属薄层的介质的单片结合体。 作为接合的方法，使用将稀土类磁体和高熔点金属层叠在一起的热等静压处理方法，由此制作被处理物，然后将物体放入 具有装配有加热器的内壁部的封闭式高压容器，然后通过由压力和温度引起的协同效应使物体在所有方向上均匀地加压，同时在一定时间内将物体保持一定时间 在惰性气体的气氛中的压力和温度条件，从而将物体整体结合。 由此，可以获得其中磁体可以与另一个具有高强度的金属部件一体地结合而不会恶化磁特性的接合构造，使得稀土类磁体的脆性，刚性，强度等不足 被补偿。

    R-FE-B permanent magnet materials and process of producing the same
    9.
    发明授权
    R-FE-B permanent magnet materials and process of producing the same 失效
    R-FE-B永磁材料及其制造方法

    公开(公告)号：US5788782A

    公开(公告)日：1998-08-04

    申请号：US512951

    申请日：1995-08-09

    申请人： Yuji Kaneko ,  Naoyuki Ishigaki ,  Koki Tokuhara

    发明人： Yuji Kaneko ,  Naoyuki Ishigaki ,  Koki Tokuhara

    IPC分类号： B22F9/02 ,  C22C1/04 ,  H01F1/057 ,  H01F1/032

    CPC分类号： C22C1/0441 ,  B22F9/023 ,  H01F1/0573 ,  H01F1/0577 ,  B22F2998/00 ,  B22F2999/00

    摘要： It is an object of the present invention to provide R-Fe-B permanent magnet materials having a good oxidation resistance and magnetic characteristics, and a process of producing the same capable of pulverizing efficiently, whereby an R-Fe-B molten alloy having a specific composition is casted into a cast piece having a specific plate thickness and a structure, in which an R-rich phase is finely separated below 5 .mu.m, by a strip casting process, the cast piece is subjected to a Hydrogenation for spontaneous decay, and thereafter, an alloy powder is dehydrogenated and stabilized for pulverization so as to fractionize crystal grains of a main phase constituting an alloy ingot, thereby the powder having a uniform grain distribution can be produced at an efficiency of about twice as much as the conventional process, and the R-rich phase and an R.sub.2 Fe.sub.14 B phase are also fractionized at the time of pulverization, thus by magnetization by pressing after the orientation using a pulse magnetic field, a high performance R-Fe-B permanent magnet having, a good oxidation resistance and magnetic characteristics of the magnet alloy, particularly, a total value A+B of a maximum energy product value (BH) max (MGOe); A and a characteristic value; B of a coercive force iHc (kOe) of 59 or more and the squareness of demagnetization curve {(Br.sup.2 /4)/(BH) max} of 1.01 to 1.045 is obtained.

    摘要翻译： 本发明的目的是提供具有良好的抗氧化性和磁特性的R-Fe-B永磁材料及其制造方法，其能够有效地粉碎，由此制备具有 将特定组合物通过带材流延法铸造成具有特定板厚度和其中富含R相细微分离的结构的铸件，将铸片进行氢化自发衰变， 然后，将合金粉末脱氢稳定化，进行粉碎，以使构成合金锭的主相的晶粒分级，由此可以以常规方法的大约两倍的效率制造具有均匀晶粒分布的粉末 ，并且在粉碎时还分解富R相和R2Fe14B相，因此通过使用脉冲磁性fie在定向后通过压制而磁化 ld是具有良好的抗氧化性和磁性合金的磁特性的高性能R-Fe-B永磁体，特别是最大能量乘积值（BH）max（MGOe）的总值A + B。 A和特征值; 得到59以上的矫顽力iHc（kOe）的B和1.01〜1.045的退磁曲线{（Br2 / 4）/（BH）max}的矩形度。