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    Stainless steel powder for high temperature applications
    91.
    发明申请
    Stainless steel powder for high temperature applications 审中-公开
    不锈钢粉末适用于高温应用

    公开(公告)号：US20050129563A1

    公开(公告)日：2005-06-16

    申请号：US10733193

    申请日：2003-12-11

    Applicant: Ryan Sun ,  Kai Xu ,  Dan Matthews

    Inventor： Ryan Sun ,  Kai Xu ,  Dan Matthews

    IPC: F02B39/00 ,  B22F3/00 ,  B22F3/02 ,  B22F3/12 ,  B22F3/16 ,  B22F3/23 ,  B22F5/02 ,  B22F5/10 ,  C22C33/02 ,  C22C38/00 ,  C22C38/34 ,  F02B37/24

    CPC classification number: C22C33/0285 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  B22F5/02 ,  B22F3/02 ,  B22F3/10 ,  B22F3/1007 ,  B22F2201/013 ,  B22F2201/02 ,  B22F2201/20

    Abstract: A method of producing parts from powdered metal comprising the steps of providing a metallurgic powder comprising iron, 0-0.6 weight percent carbon, 0.5-5.0 weight percent silicon, 0.5-6.0 weight percent nickel, 0.5-1.5 weight percent molybdenum, 0-0.7 weight percent manganese, and 12-20 weight percent chromium, the weight percentages calculated based on the total weight of the powder. Secondly, the powders are compressed at a pressure of 35 to 65 tsi to provide a green compact. Then, the compact is heated in an atmosphere to a temperature of 2100° F. to 2400° F. for 20 to 90 minutes, such that the resulting microstructure of the compact is either single phase ferritic or dual phase ferritic and austenitic.

    Abstract translation: 一种从粉末金属制备零件的方法，包括以下步骤：提供包含铁，0-0.6重量％碳，0.5-5.0重量％硅，0.5-6.0重量％镍，0.5-1.5重量％钼，0-0.7 重量百分比的锰和12-20重量％的铬，基于粉末的总重量计算的重量百分比。 其次，在35〜65tsi的压力下压粉，得到生坯。 然后，将该压块在气氛中加热到2100°F至2400°F的温度20至90分钟，使得压块的所得微结构为单相铁素体或双相铁素体和奥氏体。

    Sputtering target, method of making same, and high-melting metal powder material
    93.
    发明授权
    Sputtering target, method of making same, and high-melting metal powder material 失效
    溅射靶，其制造方法和高熔点金属粉末材料

    公开(公告)号：US06589311B1

    公开(公告)日：2003-07-08

    申请号：US09612561

    申请日：2000-07-07

    Applicant: Gang Han ,  Hideo Murata ,  Hideki Nakamura

    Inventor： Gang Han ,  Hideo Murata ,  Hideki Nakamura

    IPC: B22F312

    CPC classification number: C22C1/045 ,  B22F1/0081 ,  B22F2998/00 ,  B22F2999/00 ,  C23C14/3414 ,  B22F3/15 ,  B22F2202/13 ,  B22F1/0048 ,  B22F2201/013

    Abstract: There is provided a method of making a high-melting metal powder which has high purity and excellent formability and, particularly, of a metal powder of spherical particles made of Ta, Ru, etc. having a higher melting point than iron. There is also provided a target of high-melting metal or its alloy, which is made by the sintering under pressure of these powders and which has high purity and a low oxygen concentration and shows high density and a fine and uniform structure. A powder metal material mainly composed of a high-melting metal material is introduced into a thermal plasma into which hydrogen gas has been introduced, thereby to accomplish refining and spheroidizing. Further, an obtained powder is pressed under pressure by hot isostatic pressing, etc.

    Abstract translation: 提供了一种制备高纯度和优异成型性的高熔点金属粉末的方法，特别是由具有比铁更高的熔点的Ta，Ru等制成的球形颗粒的金属粉末的方法。 还提供了通过在这些粉末的压力下烧结而制备的高熔点金属或其合金的靶，其具有高纯度和低氧浓度，并且显示出高密度和细微且均匀的结构。 将主要由高熔点金属材料构成的粉末金属材料引入已经引入氢气的热等离子体中，从而进行精炼和球化。 此外，通过热等静压等将得到的粉末压在压力下

    Method of manufacturing hydrogen-absorbing alloy electrode
    96.
    发明授权
    Method of manufacturing hydrogen-absorbing alloy electrode 失效
    制造吸氢合金电极的方法

    公开(公告)号：US06482277B2

    公开(公告)日：2002-11-19

    申请号：US09810464

    申请日：2001-03-19

    Applicant: Teruhiko Imoto ,  Tadashi Ise ,  Yohei Hirota ,  Takayuki Murakami

    Inventor： Teruhiko Imoto ,  Tadashi Ise ,  Yohei Hirota ,  Takayuki Murakami

    IPC: C21D174

    CPC classification number: H01M4/383 ,  B22F1/0088 ,  B22F2999/00 ,  C01B3/0057 ,  Y02E60/327 ,  Y10S420/90 ,  B22F2201/013

    Abstract: A hydrogen-absorbing alloy electrode is prepared by reducing an oxide or hydroxide residing on the surface of a hydrogen-absorbing alloy particle while the alloy particle is held in an atmosphere of a hydrogen gas maintained at a temperature where absorbing of a hydrogen gas does not substantially occur; cooling the atmosphere from a temperature where absorbing of the hydrogen gas does not substantially occur to a temperature where the equilibrium hydrogen pressure of the hyrogen-absorbing alloy is equal to the hydrogen pressure in the atmosphere of the hydrogen gas and thereafter vacuum-evacuating and removing the hydrogen gas so that the hydrogen-absorbing alloy particle is cooled to room temperature while the hydrogen gas is exhausted; and thereafter introducing argon, nitrogen or carbon dioxide gas into the atmosphere, thereby returning the atmosphere to normal atmospheric pressure; and immersing the hydrogen-absorbing alloy particle so prepared in a solution containing an oxidation inhibiting agent.

    Abstract translation: 通过还原在吸氢合金颗粒的表面上残留的氧化物或氢氧化合物来制备吸氢合金电极，同时将合金颗粒保持在保持在不吸收氢气的温度的氢气气氛中 基本发生; 从氢吸收氢气基本上不发生的温度将氢气冷却到氢吸收合金的平衡氢气压力等于氢气气氛中的氢气压力并随后真空抽真空的温度 使氢气在氢气排出的同时将吸氢合金粒子冷却至室温; 然后将氩气，氮气或二氧化碳气体引入大气中，使气氛恢复正常大气压; 并将如此制备的吸氢合金颗粒浸入含有氧化抑制剂的溶液中。

    Method for producing a magnetic alloy powder
    97.
    发明授权
    Method for producing a magnetic alloy powder 失效
    磁性合金粉末的制造方法

    公开(公告)号：US06352597B1

    公开(公告)日：2002-03-05

    申请号：US09554841

    申请日：2000-07-14

    Applicant: Oliver Gutfleisch ,  Michael Kubis ,  Axel Handstein ,  Bernhard Gebel ,  Karl-Hartmut Mueller ,  Ivor Harris ,  Ludwig Schultz

    Inventor： Oliver Gutfleisch ,  Michael Kubis ,  Axel Handstein ,  Bernhard Gebel ,  Karl-Hartmut Mueller ,  Ivor Harris ,  Ludwig Schultz

    IPC: H01F106

    CPC classification number: H01F1/0553 ,  B22F9/023 ,  B22F9/04 ,  B22F2999/00 ,  B22F2201/013 ,  B22F1/0085

    Abstract: A method is disclosed enabling a technologically controllable and economical production of a hard-magnetic powder composed of a samarium-cobalt base alloy for highly coercive permanent magnets. The method is based on a HDDR treatment in which a starting powder is subjected to hydrogenation with disproportionation of the alloy in a first method step under hydrogen and, in a subsequent, second method step under vacuum conditions, a hydrogen desorption with recombination of the alloy. A starting powder containing samarium and cobalt is treated in the first method step either at a high temperature in the range of 500° C. to 900° C. and with a high hydrogen pressure of >0.5 MPa or by applying an intensive fine grinding at a low temperature in the range of 50° C. to 500° C. and with a hydrogen pressure of >0.15 MPa. By means of the method of the invention, magnetic alloy powders can be produced from samarium-cobalt base alloys; highly coercive permanent magnets can be produced from these magnetic alloy powders, particularly by hot compacting or plastic bonding.

    Abstract translation: 公开了一种能够技术上可控和经济地生产由用于高矫顽永磁体的钐 - 钴基合金组成的硬磁粉末的方法。 该方法基于HDDR处理，其中起始粉末在第一方法步骤中在氢气下以合金的歧化进行氢化，并且在随后的第二方法步骤中，在真空条件下，通过合金的复合氢解吸 。 在第一方法步骤中，在500℃至900℃的高温和> 0.5MPa的高氢气压力下或通过在 在50℃至500℃的范围内的低温和> 0.15MPa的氢气压力。 通过本发明的方法，可以由钐钴基合金制备磁性合金粉末; 可以通过这些磁性合金粉末，特别是通过热压实或塑性粘合来制造高矫顽永久磁铁。

    Polymetallic precursors and compositions and methods for making supported polymetallic nanocomposites
    98.
    发明授权
    Polymetallic precursors and compositions and methods for making supported polymetallic nanocomposites 失效
    多金属前体及其制备负载型多金属纳米复合材料的组合物和方法

    公开(公告)号：US06232264B1

    公开(公告)日：2001-05-15

    申请号：US09099556

    申请日：1998-06-18

    Applicant: Charles M. Lukehart ,  William D. King ,  Stephen B. Milne ,  Frank E. Jones, III ,  James D. Corn ,  Deborah L. Boxall ,  Krzysztof C. Kwiatkowski

    Inventor： Charles M. Lukehart ,  William D. King ,  Stephen B. Milne ,  Frank E. Jones, III ,  James D. Corn ,  Deborah L. Boxall ,  Krzysztof C. Kwiatkowski

    IPC: B01J2342

    CPC classification number: H01M4/9008 ,  B01J23/40 ,  B01J35/0013 ,  B22F9/30 ,  B22F2998/10 ,  B22F2999/00 ,  C07F15/0046 ,  C07F15/0053 ,  C07F15/0086 ,  C07F15/0093 ,  H01M4/926 ,  H01M8/1011 ,  Y02E60/523 ,  B22F9/26 ,  B22F2201/013

    Abstract: The present invention relates to methods for preparing polymetallic precursors and for preparing improved nanocomposites formed from such precursors which are useful in fuel cell catalyst compositions. The nanocomposites include a support and a plurality of polymetallic nanoparticles with a selected metal atomic ratio. The metals in the polymetallic precursors have a stoichiometric ratio which is approximately equal to the selected atomic ratio of metals in the nanoparticles such that stoichiometric control is provided for the resulting nanocomposite catalyst. Crystalline intermetallic or metal alloy nanoparticles form when a polymetallic precursor having a particular metal stoichiometry is contacted with a conductive support, and the precursor is thermally degraded on the support leading to retention of the metal core of the precursor on the support. The polymetallic alloy nanoparticles formed have a selected metal atomic ratio which is approximately equal to the stoichiometric ratio of metals in the polymetallic precursor. Fuel cell catalysts comprising such nanocomposites have utility as either anode or cathode fuel cell catalysts, particularly in DMFCs.

    Abstract translation: 本发明涉及用于制备多金属前体的方法和用于制备可用于燃料电池催化剂组合物的由这些前体形成的改进的纳米复合材料的方法。 纳米复合材料包括支撑体和具有选定的金属原子比的多个多金属纳米粒子。 多金属前体中的金属的化学计量比近似等于所选择的纳米颗粒中的金属原子比，从而为所得纳米复合催化剂提供化学计量的对照。 当具有特定金属化学计量的多金属前驱物与导电载体接触时，结晶金属间化合物或金属合金纳米颗粒形成，并且前体在载体上热降解，导致前体金属核保持在载体上。 所形成的多金属合金纳米颗粒具有与金属前体金属的化学计量比近似相等的金属原子比。 包含这种纳米复合材料的燃料电池催化剂可用作阳极或阴极燃料电池催化剂，特别是在DMFC中。

    Process for producing metal powders and apparatus for producing the same
    99.
    发明授权
    Process for producing metal powders and apparatus for producing the same 失效
    金属粉末的制造方法及其制造方法

    公开(公告)号：US06168752A

    公开(公告)日：2001-01-02

    申请号：US09117509

    申请日：1998-07-31

    Applicant: Wataru Kagohashi ,  Takefumi Irie ,  Hideo Takatori

    Inventor： Wataru Kagohashi ,  Takefumi Irie ,  Hideo Takatori

    IPC: B22F922

    CPC classification number: B22F9/28 ,  B22F2998/00 ,  B22F2999/00 ,  Y10S266/905 ,  B22F1/0018 ,  B22F2201/013

    Abstract: A process for producing metallic powders a chlorination step for continuously producing chloride gas of metal by reacting metal with chlorine gas, and a reduction step for continuously reducing the metallic chloride gas by reacting the metallic chloride gas produced in the chlorination step with reducing gas. Regulating the feed rate of the chlorine gas can control the feed rate of the metallic chloride gas, whereby the particle diameters of produced metal powders can be stably controlled. Thus, the invention can make the particle diameters stable and arbitrarily control the diameters in the range of 0.1 to 1.0 &mgr;m.

    Abstract translation: 一种金属粉末的制造方法，其特征在于，使金属与氯气反应生成氯化物气体的氯化气体的氯化工序，以及通过使氯化工序生成的氯化金属气体与还原气体反应而连续还原金属氯化物气体的还原工序。 调节氯气的进料速率可以控制金属氯化物气体的进料速率，从而可以稳定地控制所生产的金属粉末的粒径。 因此，本发明可使粒径稳定且任意地控制直径在0.1〜1.0μm的范围内。

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