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Design and Performance Optimizations of Advanced Erosion-Resistant Low Conductivity Thermal Barrier Coatings for Rotorcraft EnginesThermal barrier coatings will be more aggressively designed to protect gas turbine engine hot-section components in order to meet future rotorcraft engine higher fuel efficiency and lower emission goals. For thermal barrier coatings designed for rotorcraft turbine airfoil applications, further improved erosion and impact resistance are crucial for engine performance and durability, because the rotorcraft are often operated in the most severe sand erosive environments. Advanced low thermal conductivity and erosion-resistant thermal barrier coatings are being developed, with the current emphasis being placed on thermal barrier coating toughness improvements using multicomponent alloying and processing optimization approaches. The performance of the advanced thermal barrier coatings has been evaluated in a high temperature erosion burner rig and a laser heat-flux rig to simulate engine erosion and thermal gradient environments. The results have shown that the coating composition and architecture optimizations can effectively improve the erosion and impact resistance of the coating systems, while maintaining low thermal conductivity and cyclic oxidation durability
Document ID
20120008718
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Authors
Zhu, Dongming (NASA Glenn Research Center Cleveland, OH, United States)
Miller, Robert A. (NASA Glenn Research Center Cleveland, OH, United States)
Kuczmarski, Maria A. (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 25, 2013
Publication Date
May 1, 2012
Subject Category
Nonmetallic Materials
Report/Patent Number
NASA/TM-2012-217138
E-17874
Meeting Information
Meeting: 66th Annual Forum and Technology Display (AHS Forum 66)
Location: Phoenix, AZ
Country: United States
Start Date: May 11, 2010
End Date: May 13, 2010
Sponsors: American Helicopter Society, Inc.
Funding Number(s)
WBS: WBS 877868.02.07.03.01.03.01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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