Dynamic dehydriding of refractory metal powders
    72.
    发明授权
    Dynamic dehydriding of refractory metal powders 有权
    难熔金属粉末的动态脱氢

    公开(公告)号:US08246903B2

    公开(公告)日:2012-08-21

    申请号:US12206944

    申请日:2008-09-09

    Abstract: Refractory metal powders are dehydrided in a device which includes a preheat chamber for retaining the metal powder fully heated in a hot zone to allow diffusion of hydrogen out of the powder. The powder is cooled in a cooling chamber for a residence time sufficiently short to prevent re-absorption of the hydrogen by the powder. The powder is consolidated by impact on a substrate at the exit of the cooling chamber to build a deposit in solid dense form on the substrate.

    Abstract translation: 耐火金属粉末在包括用于保持在热区域中完全加热的金属粉末的预热室的装置中脱水以允许氢从粉末中扩散出来。 粉末在冷却室中冷却,停留时间足够短以防止粉末再次吸收氢气。 粉末通过在冷却室的出口处的基底上冲击而固结,以在基体上以固体致密形式沉积。

    PROTECTIVE METAL-CLAD STRUCTURES
    74.
    发明申请
    PROTECTIVE METAL-CLAD STRUCTURES 有权
    保护性金属结构

    公开(公告)号:US20110300396A1

    公开(公告)日:2011-12-08

    申请号:US13184665

    申请日:2011-07-18

    Abstract: In various embodiments, a metallic structure includes first and second clad structures each comprising a protective layer disposed over a steel layer, a joint joining the steel layers of first and second clad structures, and, directly connecting the protective layers of the first and second clad structures, a layer of metal powder disposed in contact with (i) the joint, (ii) the protective layers of the first and second clad structures, and (iii) a portion of at least one of the steel layers proximate the joint.

    Abstract translation: 在各种实施例中,金属结构包括第一和第二包覆结构,每个包层结构包括设置在钢层上的保护层,连接第一和第二包层结构的钢层的接头,以及直接连接第一和第二覆层的保护层 结构,与(i)接头接触设置的金属粉末层,(ii)第一和第二包覆结构的保护层,和(iii)靠近接头的至少一个钢层的一部分。

    METHODS OF JOINING PROTECTIVE METAL-CLAD STRUCTURES HAVING LOW ATTENDANT ENERGY CONSUMPTION
    75.
    发明申请
    METHODS OF JOINING PROTECTIVE METAL-CLAD STRUCTURES HAVING LOW ATTENDANT ENERGY CONSUMPTION 有权
    接收低能耗消耗的保护金属结构的方法

    公开(公告)号:US20110132534A1

    公开(公告)日:2011-06-09

    申请号:US13026370

    申请日:2011-02-14

    Abstract: The present invention is directed to a process for joining tantalum clad steel structures. The process broadly comprises: a) providing a first tantalum clad section, said first tantalum clad section comprising a tantalum layer over a steel layer, with a bonding layer optionally therebetween, with a portion of said steel layer in an edge region not being covered by said tantalum layer or said bonding layer, b) providing a second tantalum clad section, said second tantalum clad section comprising a tantalum layer over a. steel layer, with a bonding layer optionally therebetween, with a portion of said steel layer in an edge region not being covered by said tantalum layer or said bonding layer, c) locating said steel edge regions adjacent each other, d) welding the steel edge regions together, e) cold spraying a tantalum powder onto the welded edge regions and over the tantalum layers adjacent said edge regions thereby joining the tantalum clad steel sections. The invention is also directed to tantalum welds or joints formed by cold spraying tantalum powder.

    Abstract translation: 本发明涉及一种用于接合钽复合钢结构的方法。 该方法广泛地包括:a)提供第一钽包层部分,所述第一钽包层部分包括在钢层上的钽层,任选地在其间具有粘结层,所述钢层在边缘区域中的一部分不被覆盖 所述钽层或所述接合层,b)提供第二钽包层部分,所述第二钽包层部分包括一层钽层。 钢层,任选地具有粘合层,所述钢层的边缘区域中的一部分不被所述钽层或所述粘合层覆盖,c)将所述钢边缘区域彼此相邻定位,d)将钢边缘 区域一起,e)将钽粉末冷却喷涂到焊接边缘区域上并且在邻近所述边缘区域的钽层上方,从而接合钽包层部分。 本发明还涉及通过冷喷钽粉形成的钽焊缝或接头。

    Process for preparing metal powders having low oxygen content, powders so-produced and uses thereof
    79.
    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

    Abstract: 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.

    Abstract translation: 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。

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