Method for thermal barrier coating

摘要

A method of applying thermal barrier coating systems to a metal piece (10) having a cooling hole extending along a central axis (52) through the piece from a first surface (22) of the piece (10) to a second surface (42) of the piece (10) opposite the first surface (22). The method includes spraying a bond coat (60) on the first surface (22) of the piece (10) and spraying a thermal barrier coating (70) on the bond coat (60). Further, the method includes spraying a high pressure fluid jet from a nozzle (46) toward the hole and in a direction generally parallel to the central axis (52) of the hole. The fluid jet is substantially free of solid particulate thereby permitting the jet to remove the bond coat (60) and the thermal barrier coating (70) from the hole without removing metal from the piece (10).