Effects of diffusion on aluminum depletion and degradation of NiAl coatingsExperimental demonstration of the effects of diffusion on aluminum depletion and degradation in NiAl coatings on superalloys. Pack aluminized IN 100 and Mar-M200 were vacuum annealed at 1100 C to allow diffusion to proceed independently of oxidation. As-coated and as-diffused coatings were compared before and after cyclic furnace oxidation at 1100 C. The extent of degradation was judged by specific weight change, metallography, and electron microprobe analyses.
Document ID
19740027396
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Smialek, J. L.
Lowell, C. E. (NASA Lewis Research Center Cleveland, Ohio, United States)