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Evaluation of hot corrosion behavior of thermal barrier coatingsCalcium silicate and yttria stabilized zirconia/MCrAlY thermal barrier coating systems on air-cooled specimens were exposed to sodium plus vanadium doped Mach 0.3 combustion gases. Thermal barrier coating endurance was determined to be a strong inverse function of ceramic coating thickness. Coating system durability was increased through the use of higher Cr + Al NiCrAl and CoCrAlY bond coatings. Chemical and electron microprobe analyses supported the predictions of condensate compositions and the determination of their roles in causing spalling of the ceramic coatings.
Document ID
19800016916
Document Type
Conference Paper
Authors
Hodge, P. E. (NASA Lewis Research Center Cleveland, OH, United States)
Miller, R. A. (NASA Lewis Research Center Cleveland, OH, United States)
Gedwill, M. A. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 4, 2013
Publication Date
January 1, 1980
Subject Category
Metallic Materials
Report/Patent Number
DOE/NASA/2593-16
NASA-TM-81520
Meeting Information
Meeting: Intern. Conf. on Met. Coatings
Location: San Diego, CA
Country: United States
Start Date: April 21, 1980
End Date: April 25, 1980
Accession Number
80N25412
Funding Number(s)
CONTRACT_GRANT: EF-77-A-01-2593
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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