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Experimental study of ceramic-coated tip seals for turbojet enginesCeramic gas-path seals were fabricated and successfully operated over 1000 cycles from flight idle to maximum power in a small turboshaft engine. The seals were fabricated by plasma spraying zirconia over a NiCoCrAlX bond coat on the Haynes 25 substrate. Coolant-side substrate temperatures and related engine parameters were recorded. Post-test inspection revealed mudflat surface cracking with penetration to the ceramic bond-coat interface.
Document ID
19860030489
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Biesiadny, T. J.
(NASA Lewis Research Center Cleveland, OH, United States)
Mcdonald, G.
(NASA Lewis Research Center Cleveland, OH, United States)
Hendricks, R. C.
(NASA Lewis Research Center Cleveland, OH, United States)
Klann, G. A.
(U.S. Army, Propulsion Laboratory, Cleveland OH, United States)
Lassow, E. S.
(Howmet Turbine Components Corp. Whitehall, MI, United States)
Date Acquired
August 12, 2013
Publication Date
August 1, 1985
Publication Information
Publication: Ceramic Engineering and Science Proceedings
Volume: 6
ISSN: 0196-6219
Subject Category
Mechanical Engineering
Accession Number
86A15227
Distribution Limits
Public
Copyright
Other

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