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    • 7. 发明授权
    • Process for making constrained filament niobium-based superconductor composite
    • 制造受限长丝铌基超导体复合材料的工艺
    • US06543123B1
    • 2003-04-08
    • US09532362
    • 2000-03-21
    • James Wong
    • James Wong
    • H01L3924
    • G06Q10/02C23C2/02C23C2/08C23C2/28H01L39/2409Y10T29/49014
    • A niobium-based superconductor is manufactured by establishing multiple niobium components in a billet of a ductile metal, working the composite billet through a series of reduction steps to form the niobium components into elongated elements, each niobium element having a thickness on the order of 1 to 25 microns, surrounding the billet prior to the last reduction step with a porous confining layer of an acid resistant metal, immersing the confined billet in an acid to remove the ductile metal from between the niobium elements while the niobium elements remain confined by said porous layer, exposing the confined mass of niobium elements to a material capable of reacting with Nb to form a superconductor.
    • 铌基超导体通过在延性金属的坯料中建立多个铌组分来制造,通过一系列还原步骤来加工复合坯料,以将铌组分形成为细长元件,每个铌元素的厚度大约为1 至25微米,在最后一次还原步骤之前,用耐酸金属的多孔限制层围绕坯料,将受限制的坯料浸入酸中以从铌元素之间移除延性金属,同时铌元素保持被所述多孔 层,将约束的铌元素暴露于能够与Nb反应以形成超导体的材料。
    • 8. 发明授权
    • Constrained filament electrolytic anode and process of fabrication
    • 约束长丝电解阳极及其制造工艺
    • US5869196A
    • 1999-02-09
    • US931145
    • 1997-09-16
    • James WongMark K. RudziakTerence Wong
    • James WongMark K. RudziakTerence Wong
    • B21C23/00B21C1/00B21C37/04B32B20060101B32B5/18B32B15/00H01G9/04H01G9/042H01G9/052
    • H01G9/042B21C37/047Y10T29/49002Y10T428/12479Y10T428/12806Y10T428/12819
    • Porous metal compacts suitable for use as electrodes are formed through the reduction of a metal billet consisting of multiple filaments of an appropriate valve metal, preferably tantalum, contained within, and spaced apart by, a ductile metal, preferably copper. The filaments are elongated and substantially parallel within the billet. The array of valve metal filaments within the billet is surrounded by a continuous layer of valve metal. This metal is preferably, but not necessarily, the same as that which forms the filaments. The valve metal layer preferably completely surrounds the filament array circumferentially and runs the full length of the filaments. The layer is separated from the array by the same ductile metal that serves to separate the filaments from each other. This same ductile metal forms the surface of the billet, preventing exposure of the valve metal layer. The billet is reduced by conventional means, such as extrusion and wire drawing, the composite product is cut into short lengths, and the ductile metal separating the valve metal components of the composite is removed, preferably by leaching in mineral acids. The filaments are constrained within the valve metal tube, making handling during subsequent capacitor manufacture much less difficult than if the filaments were allowed to move freely.
    • 适合用作电极的多孔金属压块通过还原金属坯料而形成,所述金属坯料由包含在延性金属(优选铜)中并由间隔开的适当的阀金属,优选钽构成。 长丝细长并在坯料内基本平行。 钢坯内的阀金属细丝阵列被一个连续的金属层包围。 该金属优选但不一定与形成长丝的金属相同。 阀金属层优选地沿圆周方向完全围绕细丝阵列,并延伸长丝的全长。 该层通过相同的延展性金属与阵列分离,其用于将长丝彼此分离。 该相同的延性金属形成坯料的表面,防止阀金属层的暴露。 通过常规方式,例如挤出和拉丝,将复合材料切割成短长度,并且分离复合材料的阀金属组分的延性金属,优选通过在无机酸中浸出而被除去。 长丝被限制在阀金属管内,使得随后的电容器制造期间的处理比如果允许细丝自由移动困难得多。