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Fabrication of ceramic substrate-reinforced and free forms by mandrel plasma spraying metal-ceramic compositesComponents fabricated of, or coated with, ceramics have lower parasitic cooling requirements. Techniques are discussed for fabricating thin-shell ceramic components and ceramic coatings for applications in rocket or jet engine environments. Thin ceramic shells with complex geometric forms involving convolutions and reentrant surfaces were fabricated by mandrel removal. Mandrel removal was combined with electroplating or plasma spraying and isostatic pressing to form a metal support for the ceramic. Rocket engine thrust chambers coated with 0.08 mm (3 mil) of ZrO2-8Y2O3 had no failures and a tenfold increase in engine life. Some measured mechanical properties of the plasma-sprayed ceramic are presented.
Document ID
19860032745
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Quentmeyer, R. 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)
Date Acquired
August 12, 2013
Publication Date
December 1, 1985
Publication Information
Publication: Journal of Vacuum Science and Technology A
Volume: 3
ISSN: 0734-2101
Subject Category
Chemistry And Materials (General)
Accession Number
86A17483
Distribution Limits
Public
Copyright
Other

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