Thermal Barrier Coatings (TBCs) Produced by Air Plasma Spray: Repair by Grinding and Waterjet (WJ) Processes

TBCs (Thermal Barrier Coatings) are multilayer structures usually consisting of a ceramic layer, known as top coat, arranged on connecting bond which, in turn, is above the substrate to protect. These applied hot section parts gas turbine engines for providing thermal protection. During component life, some oxidation end/or wear phenomena can occur, therefore TBC generally removed and then reapplied. To simplify manufacturing process making it more cost effectiveness, aim this work study possibility repair system by removing only damaged layer using non-conventional processes analyzing detail morphological roughness ensure good adhesion between layers.