Development of improved-durability plasma sprayed ceramic coatings for gas turbine enginesAn investigation is reported of improving the durability of plasma sprayed ceramic coatings for the vane platforms in the JT9d turbofan engine. The program aims for reduced fuel consumption of commercial aircraft engines; the use of improved strain tolerant microstructures and control of the substrate temperature during coating application are being evaluated. The initial burner rig tests at temperatures up to 1010 C indicated that improvements in cyclic life greater than 20:1 over previous ceramic coatings were achieved. Three plasma sprayed coating systems applied to first stage vane platforms in the high pressure turbine were subjected to a 1000-cycle JT9D engine endurance test with only minor damage occurring to the coatings.
Document ID
19800054793
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sumner, I. E. (NASA Lewis Research Center Engine Component Improvement Office, Cleveland, Ohio, United States)
Ruckle, D. L. (United Technologies Corp. Pratt and Whitney Aircraft Group, East Hartford, Conn., United States)