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    • 3. 发明授权
    • Method of maintaining a non-obstructed interior opening in kinetic spray nozzles
    • 在动力学喷嘴中保持无阻塞的内部开口的方法
    • US06896933B2
    • 2005-05-24
    • US10116927
    • 2002-04-05
    • Thomas Hubert Van SteenkisteJohn R. SmithDaniel William GorkiewiczAlaa A. ElmoursiBryan A. GillispieNilesh B. Patel
    • Thomas Hubert Van SteenkisteJohn R. SmithDaniel William GorkiewiczAlaa A. ElmoursiBryan A. GillispieNilesh B. Patel
    • B05B15/02C23C24/04B05D1/02
    • C23C24/04B05B15/50
    • A method of maintaining a non-obstructed interior opening in a kinetic spray nozzle is disclosed. The method includes the steps of providing a mixture of particles including first particle population and a second particle population; entraining the mixture of particles into a flow of a gas at a temperature below the melt temperature of the particle populations; and directing the mixture of particles entrained in the flow of gas through a supersonic nozzle to accelerate the first particle population to a velocity sufficient to result in adherence of the first particle population on a substrate positioned opposite the nozzle. The operating conditions of the kinetic spray system are selected such that the second particle population is not accelerated to a velocity sufficient to result in adherence when it impacts the substrate. The inclusion of the second particle population maintains the supersonic nozzle in a non-obstructed condition and also enables one to raise the main gas operating temperature to a much higher level, thereby increasing the deposition efficiency of the first particle population.
    • 公开了一种在动力学喷嘴中保持未阻塞的内部开口的方法。 该方法包括提供包括第一粒子群和第二粒子群的粒子的混合物的步骤; 在低于颗粒群的熔融温度的温度下将颗粒混合物引入气体流中; 并且将夹带在气流中的颗粒的混合物引导通过超音速喷嘴,以将第一颗粒群体加速到足以导致第一颗粒群在与喷嘴相对定位的基底上的粘附。 选择动力喷雾系统的操作条件使得第二粒子群体不被加速到足以在其撞击基底时导致粘附的速度。 包含第二颗粒群体将超音速喷嘴保持在非阻塞状态,并且还使得能够将主气体操作温度升高到更高的水平,从而提高第一颗粒群的沉积效率。