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Internal coating of air cooled gas turbine bladesSix coating systems were evaluated for internal coating of decent stage (DS) eutectic high pressure turbine blades. Sequential deposition of electroless Ni by the hydrazine process, slurry Cr, and slurry Al, followed by heat treatment provided the coating composition and thickness for internal coating of DS eutectic turbine blades. Both NiCr and NiCrAl coating compositions were evaluated for strain capability and ductile to brittle transition temperature.
Document ID
19800009777
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Ahuja, P. L. (General Electric Co. Cincinnati, OH, United States)
Date Acquired
September 4, 2013
Publication Date
November 1, 1979
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
NASA-CR-159701
Report Number: NASA-CR-159701
Accession Number
80N18041
Funding Number(s)
CONTRACT_GRANT: NAS3-21038
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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