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Effects of yttrium, aluminum and chromium concentrations in bond coatings on the performance of zirconia-yttria thermal barriersA cyclic furnace study was conducted on thermal barrier systems to evaluate the effects of yttrium, chromium, and aluminum in nickel-base alloy bond coatings and the effect of bond coating thickness on yttria-stabilized zirconia thermal barrier coating life. Without yttrium in the bond coatings, the zirconia coatings failed very rapidly. Increasing chromium and aluminum in the Ni-Cr-Al-Y bond coatings increased total coating life. This effect was not as great as that due to yttrium. Increased bond coat thickness was also found to increase life.
Document ID
19800013977
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Stecura, S. (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
NASA-TM-81485
E-423
Report Number: NASA-TM-81485
Report Number: E-423
Meeting Information
Meeting: Intern. Conf. on Metallurgical Coatings
Location: San Diego, CA
Country: United States
Start Date: April 21, 1980
End Date: April 25, 1980
Accession Number
80N22464
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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