Process for preparing metal powders having low oxygen content, powders so-produced and uses thereof
    3.
    发明授权
    Process for preparing metal powders having low oxygen content, powders so-produced and uses thereof 有权
    具有低氧含量的金属粉末的制备方法,如此制备的粉末及其用途

    公开(公告)号:US08226741B2

    公开(公告)日:2012-07-24

    申请号:US12444263

    申请日:2007-10-03

    IPC分类号: B22F1/00

    摘要: The present invention is directed to a process for the preparation of a metal powder having a purity at least as high as the starting powder and having an oxygen content of 10 ppm or less comprising heating said metal powder containing oxygen in the form of an oxide, with the total oxygen content being from 50 to 3000 ppmf in an inert atmosphere at a pressure of from 1 bar to 10−7 to a temperature at which the oxide of the metal powder becomes thermodynamically unstable and removing the resulting oxygen via volatilization. The metal powder is preferably selected from the group consisting of tantalum, niobium, molybdenum, hafnium, zirconium, titanium, vanadium, rhenium and tungsten. The invention also relates to the powders produced by the process and the use of such powders in a cold spray process.

    摘要翻译: 本发明涉及制备纯度至少与起始粉末一样高且氧含量为10ppm以下的金属粉末的方法,包括加热含氧形式的氧的金属粉末, 其总氧含量为50-3000ppmf,在惰性气氛中,压力为1bar至10-7至金属粉末的氧化物变为热力学不稳定的温度,并通过挥发除去所得氧。 金属粉末优选选自钽,铌,钼,铪,锆,钛,钒,铼和钨。 本发明还涉及通过该方法生产的粉末和在冷喷涂方法中使用这种粉末。

    Process for preparing metal powders having low oxygen content, powders so-produced and uses thereof
    5.
    发明申请
    Process for preparing metal powders having low oxygen content, powders so-produced and uses thereof 审中-公开
    具有低氧含量的金属粉末的制备方法,如此制备的粉末及其用途

    公开(公告)号:US20080078268A1

    公开(公告)日:2008-04-03

    申请号:US11542055

    申请日:2006-10-03

    IPC分类号: B22F9/20

    摘要: The present invention is directed to a process for the preparation of a metal powder having a purity at least as high as the starting powder and having an oxygen content of 10 ppm or less comprising heating said metal powder containing oxygen in the form of an oxide, with the total oxygen content being from 50 to 3000 ppm, in an inert atmosphere at a pressure of from 1 bar to 10−7 to a temperature at which the oxide of the metal powder becomes thermodynamically unstable and removing the resulting oxygen via volatilization. The metal powder is preferably selected from the group consisting of tantalum, niobium, molybdenum, hafnium, zirconium, titanium, vanadium, rhenium and tungsten. The invention also relates to the powders produced by the process and the use of such powders in a cold spray process.

    摘要翻译: 本发明涉及制备纯度至少与起始粉末一样高且氧含量为10ppm以下的金属粉末的方法,包括加热含氧形式的氧的金属粉末, 总氧含量为50-3000ppm,在惰性气氛中,压力为1巴-10-7℃至金属粉末的氧化物变得热力学不稳定并除去 所产生的氧气通过挥发。 金属粉末优选选自钽,铌,钼,铪,锆,钛,钒,铼和钨。 本发明还涉及通过该方法生产的粉末和在冷喷涂方法中使用这种粉末。

    Process for producing a rotary anode and the anode produced by such process
    6.
    发明申请
    Process for producing a rotary anode and the anode produced by such process 审中-公开
    用于制造旋转阳极和通过这种方法制造的阳极的方法

    公开(公告)号:US20080081122A1

    公开(公告)日:2008-04-03

    申请号:US11542268

    申请日:2006-10-03

    IPC分类号: C23C4/08

    CPC分类号: C23C4/02 C23C4/134 H01J35/108

    摘要: The present invention is directed to an improved process for manufacturing a rotary anode for an x-ray tube, said rotary anode comprising a molybdenum support member on which a target layer consisting essentially of tungsten or a tungsten-rhenium alloy is provided by plasma spraying, the improvement comprising: a) preheating the support member to a temperature of from 1150° C. to 1600° C., b) placing the support member in a gaseous atmosphere containing hydrogen and having a pressure of from 0.5 to 0.9 bars and wherein hydrogen is present in a molar ratio of hydrogen to tungsten dioxide of from 5:1 to 50:1, and c) plasma spraying the target layer onto the support layer in said gaseous atmosphere. The invention is also directed to the anode produced by the process.

    摘要翻译: 本发明涉及一种用于制造用于X射线管的旋转阳极的改进方法,所述旋转阳极包括钼支撑构件,其上通过等离子喷涂提供基本上由钨或钨 - 铼合金组成的靶层, 改进包括:a)将支撑构件预热至1150℃至1600℃的温度,b)将支撑构件放置在含有氢的压力为0.5至0.9巴的气态气氛中,其中氢 以5:1至50:1的氢与二氧化钨的摩尔比存在,以及c)在所述气体气氛中将目标层等离子体喷涂到载体层上。 本发明还涉及通过该方法制备的阳极。

    Metallic alloy for X-ray target
    7.
    发明申请
    Metallic alloy for X-ray target 审中-公开
    金属合金用于X射线靶

    公开(公告)号:US20080118031A1

    公开(公告)日:2008-05-22

    申请号:US11601154

    申请日:2006-11-17

    IPC分类号: H01J35/08 C22C27/04

    摘要: The present invention is directed a molybdenum alloy consisting essentially of a) molybdenum present in a major amount, b) tantalum and tungsten as major metal alloy additions and c) a minor amount of an element selected from the group consisting of boron, hafnium, carbon and mixtures thereof. The invention is also directed to an X-ray tube anode composed of a molybdenum alloy body having a focal track thereon, with the body consisting essentially of the above-described molybdenum alloy.

    摘要翻译: 本发明涉及一种钼合金,主要由a)主要含有的钼,b)钽和钨作为主要金属合金添加物,和c)少量选自硼,铪,碳的元素 及其混合物。 本发明还涉及由其上具有焦点轨道的钼合金体构成的X射线管阳极,其主体由上述钼合金组成。