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    • 1. 发明申请
    • Oxidation resistant niobium based alloys
    • 耐氧化铌基合金
    • US20060172142A1
    • 2006-08-03
    • US11192302
    • 2005-07-28
    • Gregory OlsonDavid BryanAbhijeet Misra
    • Gregory OlsonDavid BryanAbhijeet Misra
    • C22C27/02
    • C22C27/02B22F2998/00C22C21/00C22C30/00C23C8/16Y02T50/67B22F5/009B22F5/04C22C1/045
    • Oxidation resistant niobium based alloys have a composition to provide a stable ternary phase such as PtYAl or PdYAl, which supplies yttrium and aluminum to the system and forms a protective oxide such as Yttria-Aluminum-Garnet (YAG) scale at elevated temperature. These niobium based alloys further achieve an optimal combination of oxidation resistance and creep strength through a fine dispersion of a coherent second phase. The alloys, withstanding higher combustion temperatures, are useful for extreme-environment propulsion and power applications, including hot sections of gas turbine engines, aerospace turbine blades, and chemical and petroleum plants, where higher turbine efficiency and reduction of operating costs, by-products emissions, and global fuel reserves consumption are desired.
    • 耐氧化铌基合金具有提供稳定的三元相的组成,例如PtYAl或PdYAl,其向体系提供钇和铝,并在升高的温度下形成保护性氧化物,例如氧化钇铝石榴石(YAG)垢。 这些基于铌的合金通过相干第二相的精细分散进一步实现了抗氧化性和蠕变强度的最佳组合。 具有较高燃烧温度的合金可用于极端环境推进和动力应用,包括燃气涡轮发动机,航空航天涡轮叶片和化学和石油装置的热段,其中较高的涡轮机效率和降低的运行成本副产物 排放量和全球燃料储备消耗量。
    • 8. 发明申请
    • High pressure liquid jet cutting system and method for forming polymer pellets
    • 高压液体喷射切割系统和聚合物颗粒的形成方法
    • US20050077644A1
    • 2005-04-14
    • US10917534
    • 2004-08-13
    • David BryanTimothy Falls
    • David BryanTimothy Falls
    • B26F3/00B29B9/06B29B9/10
    • B26F3/004B29B9/06B29B9/065
    • A system and method for pelletizing extruded materials, such as thermoplastic polymers in various pelletizing applications, including underwater, hot face, and strand pelletizing applications, utilizes a high pressure liquid delivered to one or more nozzles which direct a high pressure liquid jet cutting stream at the extruded polymer strand to cut the strand into pellets. The system and method are particularly applicable to underwater pelletizers utilizing water or water-based solutions. In a preferred underwater pelletizing embodiment, a plurality of nozzles are mounted on a rotating nozzle hub which is fed high pressure water through sealed hollow pelletizer and hollow motor shafts. The high pressure water jet cutting streams exiting the rotating nozzles are preferably in the form of a flat V-shaped spray with a spread angle of about 15° to about 45° and an approach angle between 0° and 60°, depending upon the pelletizing application.
    • 用于造粒挤出材料的系统和方法,例如在各种造粒应用中的热塑性聚合物,包括水下,热面和线料造粒应用,利用高压液体输送到一个或多个喷嘴,其将高压液体射流切割流 挤出的聚合物股线将股线切割成颗粒。 该系统和方法特别适用于利用水或水基溶液的水下造粒机。 在优选的水下造粒实施例中,多个喷嘴安装在通过密封的中空造粒机和空心电动机轴供给高压水的旋转喷嘴毂上。 离开旋转喷嘴的高压水射流切割流优选为具有约15°至约45°的展开角度和0°至60°之间的平角V形喷雾的形式,这取决于造粒 应用。