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    R-T-B rare earth sintered magnet, alloy for R-T-B rare earth sintered magnet, and method of manufacturing the same
    162.
    发明授权
    R-T-B rare earth sintered magnet, alloy for R-T-B rare earth sintered magnet, and method of manufacturing the same 有权
    R-T-B系稀土烧结磁体，R-T-B系稀土类烧结磁体用合金及其制造方法

    公开(公告)号：US09558872B2

    公开(公告)日：2017-01-31

    申请号：US14146098

    申请日：2014-01-02

    Applicant: SHOWA DENKO K.K.

    Inventor： Takashi Yamazaki ,  Kenichiro Nakajima

    IPC: H01F1/053 ,  H01F1/40 ,  H01F1/057 ,  H01F41/02

    CPC classification number: H01F1/40 ,  B22F1/0055 ,  B22F2998/10 ,  B22F2999/00 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0571 ,  H01F1/0577 ,  H01F41/0266 ,  H01F41/0273 ,  H01F41/0293 ,  B22F1/0059 ,  B22F3/03 ,  B22F3/10 ,  B22F2003/248 ,  B22F2009/044 ,  B22F2009/048 ,  B22F2009/049 ,  B22F2201/02 ,  B22F2201/11 ,  B22F2202/05

    Abstract: An R-T-B rare earth sintered magnet contains R which represents a rare earth element; T which represents a transition metal essentially containing Fe; a metal element M which represents Al and/or Ga; B; Cu; and inevitable impurities the R-T-B rare earth sintered magnet including 13.4 to 17 at % of R, 4.5 to 5.5 at % of B, and 0.1 to 2.0 at % of M, and T as the balance; in which the R-T-B rare earth sintered magnet is formed of a sintered body which includes a main phase composed of R2Fe14B and a grain boundary phase including a larger amount of R than the main phase; in which the magnetization direction of the main phase is a c-axis direction, in which crystal grains of the main phase have one of an elliptical shape and an oval shape extended in such a direction so as to cross the c-axis direction; and in which the grain boundary phase includes an R-rich phase in which the total atomic concentration of the rare earth elements is 70 at % or greater and a transition metal-rich phase in which the total atomic concentration of the rare earth elements is 25 to 35 at %.

    Abstract translation: R-T-B稀土烧结磁体包含表示稀土元素的R， T代表基本上含有Fe的过渡金属; 代表Al和/或Ga的金属元素M; B; 铜 和R-T-B系稀土类烧结磁体的不可避免的杂质，其中R为13.4〜17原子％，B为4.5〜5.5原子％，M为0.1〜2.0原子％，余量为T; 其中R-T-B稀土烧结磁体由包括由R2Fe14B组成的主相和包含比主相大的R的晶界相的烧结体形成; 其中主相的磁化方向是c轴方向，其中主相的晶粒具有椭圆形和椭圆形之一，沿着与c轴方向交叉的方向延伸; 并且其中晶界相包括稀土元素的总原子浓度为70原子％以上的富R相，以及稀土元素的总原子浓度为25的过渡金属富集相 至35原子％。

    Inorganic-compound particles and process for producing same
    165.
    发明授权
    Inorganic-compound particles and process for producing same 有权
    无机复合粒子及其制造方法

    公开(公告)号：US09340431B2

    公开(公告)日：2016-05-17

    申请号：US14142199

    申请日：2013-12-27

    Applicant: National Institute for Materials Science ,  Mitsuba Corporation

    Inventor： Yukihiro Isoda ,  Naoki Shioda

    IPC: B22F9/04 ,  B22F9/06 ,  C01B33/06 ,  C22C29/18 ,  B22F9/16

    CPC classification number: C01B33/06 ,  B22F9/04 ,  B22F9/16 ,  B22F2999/00 ,  Y10T428/2982 ,  Y10T428/2993 ,  B22F2201/013 ,  B22F2201/11 ,  B22F2203/11

    Abstract: A method of producing inorganic compound particles is provided. It includes a step of impregnating a melt liquid of second raw particles into first raw particles by heating a raw material including them at a temperature, which equals to or higher than an eutectic temperature between a region-II (solid-liquid phase range) and a region-I (solid phase range) in a phase diagram and lower than the melting temperature of the inorganic compound. The first raw particles contain an element with a melting point equals to or higher than a melting point of the inorganic compound. The second raw particles contain an element with a melting point lower than the inciting point of the inorganic compound. The method also includes a step of synthesizing inorganic compound particles by a synthetic reaction in the first raw particles between the elements contained in the first and second raw particles.

    Abstract translation: 提供了制备无机化合物颗粒的方法。 其包括将第二原料颗粒的熔融液浸渍到第一原料颗粒中的步骤，该温度等于或高于区域II（固液相范围）与 相图中的区域I（固相范围），并且低于无机化合物的熔融温度。 第一原料颗粒含有熔点等于或高于无机化合物的熔点的元素。 第二原料颗粒含有熔点低于无机化合物的煽燃点的元素。 该方法还包括通过在第一和第二原料中包含的元素之间的第一原料颗粒中的合成反应合成无机化合物颗粒的步骤。

    PROCESS FOR MANUFACTURING METAL CONTAINING POWDER
    167.
    发明申请
    PROCESS FOR MANUFACTURING METAL CONTAINING POWDER 审中-公开
    制造含金属粉末的方法

    公开(公告)号：US20160089724A1

    公开(公告)日：2016-03-31

    申请号：US14892478

    申请日：2014-05-21

    Applicant: HÖGANÄS AB

    Inventor： Gorgees ADAM ,  Hilmar VIDARSSON

    IPC: B22F9/22 ,  B22F1/00

    CPC classification number: B22F9/22 ,  B22F1/0003 ,  B22F2201/013 ,  B22F2201/11 ,  B22F2301/00 ,  B22F2301/052 ,  B22F2301/20 ,  B22F2301/205 ,  B22F2301/30 ,  B22F2301/45 ,  B22F2302/45 ,  B22F2999/00 ,  C01B6/00 ,  C22C1/04

    Abstract: A process for manufacturing metal containing powder, the process including the steps of: (a) mixing at least one metal oxide powder with Ca or Mg granules and/or calcium hydride in granule or powder form to form a mixture; (b) maintaining said mixture under an H2 atmosphere, at a temperature between 1000° C. and 1500° C. for 1-10 hours, followed by: (c) recovering metal containing powder. Metal hydride powder may be recovered. The process may further include between steps (b) and (c): (d) switching the H2 atmosphere to an Ar atmosphere and maintaining the mixture thereunder for a period of 20 minutes to 5 hours, followed by: (e) cooling under Ar atmosphere, wherein metal powder is recovered in step (c).

    Abstract translation: 一种制造含金属粉末的方法，该方法包括以下步骤：（a）将至少一种金属氧化物粉末与颗粒或粉末形式的Ca或Mg颗粒和/或氢化钙混合以形成混合物; （b）将所述混合物在H2气氛下，在1000℃和1500℃之间的温度下保持1-10小时，然后：（c）回收含金属粉末。 可以回收金属氢化物粉末。 该方法可以进一步包括在步骤（b）和（c）之间：（d）将H 2气氛切换到Ar气氛并将混合物保持在其下20分钟至5小时，然后：（e）在Ar 气氛，其中在步骤（c）中回收金属粉末。

    MANUFACTURING METHOD OF RARE EARTH MAGNET ALLOY POWDER, RARE EARTH MAGNET AND A POWDER MAKING DEVICE
    169.
    发明申请
    MANUFACTURING METHOD OF RARE EARTH MAGNET ALLOY POWDER, RARE EARTH MAGNET AND A POWDER MAKING DEVICE 审中-公开
    稀土磁铁合金粉末，稀土磁粉和粉末制造装置的制造方法

    公开(公告)号：US20150239048A1

    公开(公告)日：2015-08-27

    申请号：US14427159

    申请日：2013-09-10

    Applicant: XIAMEN TUNGSTEN CO., LTD.

    Inventor： Hiroshi Nagata ,  Chonghu Wu

    IPC: B22F9/04 ,  H01F1/053 ,  H01F41/02

    CPC classification number: B22F9/04 ,  B22F9/023 ,  B22F2009/044 ,  B22F2009/045 ,  B22F2998/10 ,  B22F2999/00 ,  H01F1/0536 ,  H01F1/0571 ,  H01F1/0577 ,  H01F41/0266 ,  B22F3/02 ,  B22F3/1017 ,  B22F2003/248 ,  B22F2201/10 ,  B22F2201/11 ,  B22F2202/05

    Abstract: The present invention discloses a manufacturing method and device of rare earth magnet alloy powder and rare earth magnet. The method comprises a process of fine grinding at least one kind of rare earth magnet alloy or at least one kind of rare earth magnet alloy coarse powder in inert jet stream with oxygen content below 1000 ppm to obtain powder with grain size smaller than 50 μm. Low oxygen content ultra fine powder with grain size smaller than 1 μm is not separated from the pulverizer, the oxygen content of the atmosphere is reduced to below 1000 ppm in the pulverizer when crushing the powder, thereby abnormal grain growth (AGG) rarely happens in the sintering process to get low oxygen content sintered magnet, it has advantages of simplifying process and reducing manufacturing cost.

    Abstract translation: 本发明公开了一种稀土磁体合金粉末和稀土磁体的制造方法和装置。 该方法包括在氧含量低于1000ppm的惰性喷射流中精细研磨至少一种稀土磁体合金或至少一种稀土磁体合金粗粉末以获得粒径小于50μm的粉末的方法。 颗粒尺寸小于1μm的低氧含量超细粉末与粉碎机不分离，当粉碎粉碎时，粉碎机中气氛的氧含量降低到1000ppm以下，因此异常晶粒生长（AGG）很少发生在 烧结过程中获得低含氧烧结磁体，具有简化工艺，降低制造成本的优点。

    R-T-B RARE EARTH SINTERED MAGNET, ALLOY FOR R-T-B RARE EARTH SINTERED MAGNET, AND METHOD OF MANUFACTURING THE SAME
    170.
    发明申请
    R-T-B RARE EARTH SINTERED MAGNET, ALLOY FOR R-T-B RARE EARTH SINTERED MAGNET, AND METHOD OF MANUFACTURING THE SAME 有权
    R-T-B稀土焊接磁铁，用于R-T-B稀土烧结磁体的合金及其制造方法

    公开(公告)号：US20140191831A1

    公开(公告)日：2014-07-10

    申请号：US14146098

    申请日：2014-01-02

    Applicant: Showa Denko K.K.

    Inventor： Takashi YAMAZAKI ,  Kenichiro NAKAJIMA

    IPC: H01F1/40 ,  H01F41/02

    CPC classification number: H01F1/40 ,  B22F1/0055 ,  B22F2998/10 ,  B22F2999/00 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0571 ,  H01F1/0577 ,  H01F41/0266 ,  H01F41/0273 ,  H01F41/0293 ,  B22F1/0059 ,  B22F3/03 ,  B22F3/10 ,  B22F2003/248 ,  B22F2009/044 ,  B22F2009/048 ,  B22F2009/049 ,  B22F2201/02 ,  B22F2201/11 ,  B22F2202/05

    Abstract: An R-T-B rare earth sintered magnet contains R which represents a rare earth element; T which represents a transition metal essentially containing Fe; a metal element M which represents Al and/or Ga; B; Cu; and inevitable impurities the R-T-B rare earth sintered magnet including 13.4 to 17 at % of R, 4.5 to 5.5 at % of B, and 0.1 to 2.0 at % of M, and T as the balance; in which the R-T-B rare earth sintered magnet is formed of a sintered body which includes a main phase composed of R2Fe14B and a grain boundary phase including a larger amount of R than the main phase; in which the magnetization direction of the main phase is a c-axis direction, in which crystal grains of the main phase have one of an elliptical shape and an oval shape extended in such a direction so as to cross the c-axis direction; and in which the grain boundary phase includes an R-rich phase in which the total atomic concentration of the rare earth elements is 70 at % or greater and a transition metal-rich phase in which the total atomic concentration of the rare earth elements is 25 to 35 at %.

    Abstract translation: R-T-B稀土烧结磁体包含表示稀土元素的R， T代表基本上含有Fe的过渡金属; 表示Al和/或Ga的金属元素M; B; 铜 和R-T-B系稀土类烧结磁体的不可避免的杂质，其中R为13.4〜17原子％，B为4.5〜5.5原子％，M为0.1〜2.0原子％，余量为T; 其中R-T-B稀土烧结磁体由包括由R2Fe14B组成的主相和包含比主相大的R的晶界相的烧结体形成; 其中主相的磁化方向是c轴方向，其中主相的晶粒具有椭圆形和椭圆形之一，沿着与c轴方向交叉的方向延伸; 并且其中晶界相包括稀土元素的总原子浓度为70原子％以上的富R相，以及稀土元素的总原子浓度为25的过渡金属富集相 至35原子％。

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