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    • 8. 发明授权
    • Endurance of NiA1 coatings by controlling thermal spray processing variables
    • 通过控制热喷涂处理变量,NiAl涂层的耐久性
    • US06485792B1
    • 2002-11-26
    • US09644491
    • 2000-08-23
    • Richard John GryllsJoseph David RigneyMatthew David SaylorTheodore Robert GrossmanYuk-Chiu Lau
    • Richard John GryllsJoseph David RigneyMatthew David SaylorTheodore Robert GrossmanYuk-Chiu Lau
    • C23C406
    • C23C4/18C23C4/08Y02T50/67
    • A method for applying substantially stoichiometric NiAl to the surface of a superalloy substrate. These coatings are applied to substrates subjected to high temperatures and thermal cycling by providing a powder of the substantially stoichiometric material with the desired minor additions of rare earth elements, Cr or Zr. The coatings are applied by a thermal spray process utilizing hydrogen as a fuel while generating a highly reducing flame. The thermal spray method melts the powder and directs it onto the surface of the turbine component that is to be coated. The powder size is carefully controlled to prevent oxidation of the powder while providing a controlled surface finish. The surface roughness of the bond coat is further mechanically worked to a predetermined surface finish prior to application of the ceramic thermal barrier layer by a PVD method. Thermal barrier systems applied using these carefully controlled predetermined parameters provide outstanding resistance to TBC spallation under conditions of high cyclic stresses.
    • 将基本上化学计量的NiAl施加到超级合金基底的表面上的方法。 通过提供具有理想化学计量的材料的粉末和所需的稀土元素Cr或Zr的少量添加,将这些涂层施加到经受高温和热循环的基底上。 通过使用氢作为燃料的热喷涂方法施加涂层,同时产生高度还原的火焰。 热喷雾法将粉末熔化并将其引导到待涂覆的涡轮机部件的表面上。 仔细控制粉末尺寸以防止粉末氧化,同时提供受控的表面光洁度。 在通过PVD方法施加陶瓷热障层之前,将粘合涂层的表面粗糙度进一步机械加工至预定的表面光洁度。 使用这些仔细控制的预定参数应用的热障系统在高循环应力的条件下提供了出色的耐TBC剥落性能。
    • 9. 发明申请
    • MICROWAVE PROCESS FOR FORMING A COATING
    • 用于形成涂料的微波工艺
    • US20080138533A1
    • 2008-06-12
    • US11609473
    • 2006-12-12
    • Karl Lee BornemanMatthew David Saylor
    • Karl Lee BornemanMatthew David Saylor
    • B05D3/06
    • C23C24/08B23K3/0623B23K2101/001C23C24/10C23C24/103F01D5/288F01D5/3092F05D2230/90
    • A process for forming a coating on a surface of a substrate, in which the heating source for the coating process is microwave radiation so that heating of the coating material is selective and sufficient to melt and bond the coating material to the substrate without excessively heating the substrate. The process entails forming a coating material containing powder particles that are sufficiently small to be highly susceptible to microwave radiation. The coating material is applied to a surface of the substrate and subjected to microwave radiation so that the powder particles within the coating material couple with the microwave radiation and sufficiently melt to form a coating on the substrate surface. The microwave radiation is then interrupted to allow the coating to cool, solidify, and mechanically bond to the substrate.
    • 一种在基板表面上形成涂层的方法,其中用于涂布工艺的加热源是微波辐射,使得涂层材料的加热是选择性的并且足以熔化并将涂料粘合到基材上而不过度加热 基质。 该方法需要形成含有粉末颗粒的涂层材料,该粉末颗粒足够小以致对微波辐射非常敏感。 将涂层材料施加到基底的表面并进行微波辐射,使得涂层材料内的粉末颗粒与微波辐射耦合并充分熔化以在基底表面上形成涂层。 然后中断微波辐射以允许涂层冷却,固化并机械地结合到基底。