Komponenten mit einer partiellen Platinbeschichtung und deren Herstellung

摘要

A curved component such as a turbine airfoil (22), shroud, or combustor centerbody is prepared with a platinum or a platinum-aluminide protective coating over only a portion of the surface thereof. The coating may serve as an environmental coating, or as a bond coat of a thermal barrier coating system. The partial coverage is achieved by depositing platinum (34) only over a portion of the surface of the component, typically including the concave portion (30) in the case of an airfoil (22), optionally depositing an aluminum layer (38), and optionally interdiffusing the platinum and aluminum layers.