利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

21 条记录 (耗时 0.015 秒)

    Process for preparing metal powders having low oxygen content, powders so-produced and uses thereof
    7.
    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

    申请人： Leonid N. Shekhter ,  Steven A. Miller ,  Leah F. Haywiser ,  Rong-Chein Richard Wu

    发明人： Leonid N. Shekhter ,  Steven A. Miller ,  Leah F. Haywiser ,  Rong-Chein Richard Wu

    IPC分类号： B22F1/00

    CPC分类号： B22F1/0088 ,  B05D1/12 ,  B05D2401/32 ,  B22F1/0085 ,  B22F2999/00 ,  C23C24/04 ,  B22F2201/10 ,  B22F2202/13 ,  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 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。