An experimental, low-cost, silicon-aluminide high-temperature coating for superalloysA duplex silicon-slurry/aluminide coating has been developed and cyclically tested in Mach 1 combustion gases for oxidation and thermal fatigue resistance at 1093 C and Mach 0.3 gases and hot-corrosion resistance at 900 C. The base-metal superalloys were VIA and B-1900. The coated B-1900 specimens were found to perform much better in oxidation than similar specimens coated with aluminides, and almost as well as the more expensive Pt-Al and MCrAlY (where M is Ni and/or Co) coatings deposited by the physical vapor deposition process. The coatings also provided good hot-corrosion protection.
Document ID
19800051331
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Young, S. G. (NASA Lewis Research Center Cleveland, OH, United States)
Deadmore, D. L. (NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 10, 2013
Publication Date
April 1, 1980
Subject Category
Metallic Materials
Meeting Information
Meeting: International Conference on Metallurgical Coatings