Title
Modeling degradation and failure of Ni-Cr-Al overlay coatings
Document Type
Article
Publication Date
9-21-1984
Abstract
Degradation of an Ni-16at.%Cr-25at.%Al-0.06at.%Zr overlay coating on an Ni-22at.%Cr substrate was examined after oxidation accompanied by thermal cycling. Concentration-distance profiles were measured in the coating and substrate after various numbers of 1 h cycles at 1150°C. A numerical model was developed to simulate coating degradation by simultaneously oxidation and coating- substrate interdiffusion. The validity of the model was confirmed by comparison of predicted and measured concentration-distance profiles. The ability of the model to identify critical system parameters was demonstrated for the case of the initial aluminum and chromium content of the coating and substrate. © 1984.
Publication Title
Thin Solid Films
Recommended Citation
Nesbitt, J.,
&
Heckel, R.
(1984).
Modeling degradation and failure of Ni-Cr-Al overlay coatings.
Thin Solid Films,
119(3), 281-290.
http://doi.org/10.1016/0040-6090(84)90012-9
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/5521