A nickel-based single crystal superalloy with or without a Re/AI coating was AI-diffusion treated and then oxidized in air at 1373K for up to 2.54Ms under thermal cycling and isothermal conditions. The AI-diffusion
treatment, carried out at 1273K for 57.6ks in a mixture of FeAI and AI2O3 powder, resulted in a triplex layer structure in the sequence...
Key words: Re-coating, AI-ditfusion, diffusion barrier, nickel-based superalloy, high temperature oxidation