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    Phlegmatized metal powder or alloy powder and method and reaction vessel for the production thereof
    82.
    发明授权
    Phlegmatized metal powder or alloy powder and method and reaction vessel for the production thereof 有权
    钝化金属粉末或合金粉末及其制备方法和反应容器

    公开(公告)号：US08821610B2

    公开(公告)日：2014-09-02

    申请号：US12746985

    申请日：2009-01-08

    Applicant: Ulrich Gerhard Baudis

    Inventor： Ulrich Gerhard Baudis

    IPC: B22F9/18 ,  C22C14/00 ,  C22C16/00

    CPC classification number: F27B19/02 ,  B22F9/18 ,  B22F9/20 ,  B22F9/22 ,  B22F2999/00 ,  C22B5/04 ,  C22B34/10 ,  C22B34/1268 ,  C22B34/1277 ,  C22B34/14 ,  F27D2005/0075 ,  Y10T428/2982 ,  B22F2201/013 ,  B22F2201/016 ,  B22F2201/02 ,  B22F2201/04 ,  B22F2201/30 ,  B22F2201/40

    Abstract: A method and a device are described for the production of metal powder or alloy powder of a moderate grain sizes less than 10 μm, comprising or containing at least one of the reactive metals zirconium, titanium, or hafnium, by metallothermic reduction of oxides or halogenides of the cited reactive metals with the aid of a reducing metal, wherein said metal powder or alloy powder is phlegmatized by adding a passivating gas or gas mixture during and/or after the reduction of the oxides or halogenides and/or is phlegmatized by adding a passivating solid before the reduction of the oxides or halogenides, wherein both said reduction and also said phlegmatization are performed in a single gas-tight reaction vessel which can be evacuated.

    Abstract translation: 描述了通过金属热还原氧化物或卤化物来生产中等粒度小于10μm的金属粉末或合金粉末的方法和装置，其包含或含有至少一种活性金属锆，钛或铪 的所述反应性金属，其中所述金属粉末或合金粉末通过在氧化物或卤化物还原期间和/或之后添加钝化气体或气体混合物和/或通过加入钝化气体或气体混合物而被钝化 在还原氧化物或卤化物之前钝化固体，其中所述还原和所述钝化都在可以抽空的单个气密反应容器中进行。

    METHOD FOR FABRICATING FINE REDUCED IRON POWDERS
    83.
    发明申请
    METHOD FOR FABRICATING FINE REDUCED IRON POWDERS 有权
    制造精细铁粉的方法

    公开(公告)号：US20130263698A1

    公开(公告)日：2013-10-10

    申请号：US13439118

    申请日：2012-04-04

    Applicant: Kuen-Shyang HWANG ,  Ching-Yu Chen ,  Yung-Chung Lu

    Inventor： Kuen-Shyang HWANG ,  Ching-Yu Chen ,  Yung-Chung Lu

    IPC: B22F1/00 ,  B22F9/22

    CPC classification number: B22F9/04 ,  B22F1/0048 ,  B22F9/22 ,  B22F2998/10 ,  B22F2999/00 ,  B22F2201/013 ,  B22F2201/04

    Abstract: A method for fabricating fine reduced iron powders comprises the following steps: heating fine iron oxide powders having a mean particle size of smaller than 20 μm to a reduction temperature of over 700° C. to reduce the fine iron oxide powder into iron powders that are partially sintered into iron powder agglomerates; and performing a crushing-spheroidizing process on the iron powder agglomerates to obtain individual iron powders having a mean particle size of smaller than 20 μm. The method can reduce iron oxide powers into iron powders having a rounded shape and a high packing density and a high tap density, which are suitable for the metal injection molding process and the inductor fabrication process. The reduced iron powder may further be processed using an annealing process and a second crushing-spheroidizing process in sequence to further increase the sphericity, packing density, and tap density of the reduced iron powder.

    Abstract translation: 一种制造精细还原铁粉的方法包括以下步骤：将平均粒径小于20μm的细小氧化铁粉末加热至700℃以上的还原温度，将氧化铁粉末还原为铁粉， 部分烧结成铁粉团块; 对铁粉凝聚体进行破碎球化，得到平均粒径小于20μm的各种铁粉。 该方法可以将铁氧化物的功率降低为适合于金属注射成型工艺和电感器制造工艺的具有圆形形状和高填充密度和高振实密度的铁粉末。 还原铁粉可以进一步使用退火工艺和第二破碎球化工艺进行处理，以进一步提高还原铁粉的球形度，填充密度和振实密度。

    Process for producing porous metal body
    85.
    发明授权
    Process for producing porous metal body 有权
    生产多孔金属体的方法

    公开(公告)号：US08071015B2

    公开(公告)日：2011-12-06

    申请号：US12405367

    申请日：2009-03-17

    Applicant: Tomohiro Wada ,  Tomoyuki Haneji ,  Shinichi Takahashi ,  Kiichi Kanda ,  Kenichi Watanabe

    Inventor： Tomohiro Wada ,  Tomoyuki Haneji ,  Shinichi Takahashi ,  Kiichi Kanda ,  Kenichi Watanabe

    IPC: B22F3/11

    CPC classification number: B22F3/1137 ,  B22F3/1021 ,  B22F2999/00 ,  B22F2201/04 ,  B22F2201/10 ,  B22F2201/20 ,  B22F2201/013

    Abstract: Disclosed is a process of producing a porous metal body containing a metal component which is likely to be oxidized, by which process the amounts of residual carbon and residual oxygen therein are decreased, and by which the performance of the product porous body can be largely promoted. The process for producing a porous metal body by sintering a material of the porous metal body, which material is obtained by coating a slurry containing a metal powder and an organic binder on an organic porous aggregate, comprises a defatting step of treating the material of the porous metal body at a temperature not higher than 650° C. in an atmosphere containing carbon monoxide and carbon dioxide; a decarbonization step of treating the material of the porous metal body after the defatting step in an inert atmosphere or vacuum atmosphere at a temperature not higher than sintering temperature; and a sintering step of retaining the material of the porous metal body after the decarbonization step in an inert atmosphere, vacuum atmosphere, hydrogen atmosphere, or in a reducing atmosphere containing hydrogen gas and an inert gas at a temperature not higher than the melting point of the metal powder.

    Abstract translation: 公开了一种生产含有可能被氧化的金属成分的多孔金属体的方法，通过该方法可以减少残留碳和残余氧的量，从而可以大大促进产物多孔体的性能 。 通过烧结多孔金属体的材料来制造多孔金属体的方法，该材料通过将含有金属粉末和有机粘合剂的浆料涂覆在有机多孔聚集体上而获得，该方法包括：脱脂步骤， 在含有一氧化碳和二氧化碳的气氛中，不高于650℃的多孔金属体; 在惰性气氛或真空气氛中，在不高于烧结温度的温度下，在脱脂步骤之后处理多孔金属体的材料的脱碳步骤; 在惰性气氛，真空气氛，氢气氛或含有氢气和惰性气体的还原气氛中，在不高于熔点的温度的温度下，将脱碳后的多孔金属体的材料保持在 金属粉末。

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