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    • 63. 发明授权
    • HIGH PURITY NIOBIUM AND PRODUCTS CONTAINING THE SAME, AND METHODS OF MAKING THE SAME
    • HOCHREINES NIOBMETALL UND ERZEUGNISSE DARAUS UND VERFAHREN ZU DESSEN HERSTELLUNG
    • EP1287172B1
    • 2008-10-29
    • EP01977066.8
    • 2001-05-21
    • CABOT CORPORATION
    • MICHALUK, Christopher, A.HUBER, Louis, E., Jr.
    • C22B1/00
    • C22B34/24C22B5/04C23C14/3414H01G9/0525
    • High purity niobium metals and alloys containing the same are described. The niobium metal preferably has a purity of at least 99.99 % and more preferably at least 99.999 %. In addition, niobium metal and alloys thereof are described, which either have a grain size of about 150 microns or less, or a texture in which a (100) intensity within any 5 % increment of thickness is less than about 30 random, or an incremental log ratio of (111):(100) intensity of greater than about -4.0, or any combination of these properties. Also described are articles and components made from the niobium metal which include, but are not limited to, sputtering targets, capacitor cans, resistive film layers, wire, and the like. Also disclosed is a process for making the high purity niobium metal which includes the step of reacting a salt-containing niobium and a metal salt along with at least one compound capable of reducing the salt-containing niobium to niobium and in a reaction container. The reaction container or liner in the reaction container and the agitator or liner on the agitator are made from a metal material having the same or higher vapour pressure of melted niobium. The high purity niobium product preferably has a fine and uniform microstructure.
    • 描述了高纯度铌金属及含有它们的合金。 铌金属的纯度优选为99.99%以上,更优选为99.999%以上。 此外,描述了铌金属及其合金,其具有约150微米或更小的晶粒尺寸,或其中在任何5%厚度增量内的(100)强度小于约30微米的织构,或 (111):( 100)强度的增量对数比大于约-4.0,或这些性质的任何组合。 还描述了由铌金属制成的制品和部件,其包括但不限于溅射靶,电容器罐,电阻膜层,导线等。 还公开了一种制备高纯度铌金属的方法,其包括使含盐的铌和金属盐与至少一种能够将含铌的铌还原成铌的化合物和反应容器中的步骤。 反应容器中的反应容器或衬套以及搅拌器上的搅拌器或衬垫由具有相同或更高的熔融铌蒸气压的金属材料制成。 高纯度铌产品优选具有微细且均匀的微观结构。