THERMAL BARRIER COATING APPLIED WITH COLD SPRAY TECHNIQUE

摘要

A process (20) for applying a thermal barrier coating (51) to a turbine component (50) including the step (34) of depsoiting a bond coating layer (56) by a cold spray process. The layer of bond coating material may have different depths (80, 82) in different areas of the component (50), and it may have different compositions (60, 62) across its depth. The precise control afforded by the cold spray material deposition step allows the surface of the bond coating material layer to be formed with a predetermined surface roughness or with a plurality of micro-ridges (86) in order to optimize its bond to the ovelying ceramic insulating layer (52).