Modeling degradation and failure of Ni-Cr-Al overlay coatings
Document Type
Article
Publication Date
9-21-1984
Department
Department of Materials Science and Engineering
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.
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