Bending Fatigue Behaviour of Diffusion and Thermal Barrier Coating Systems

Room temperature fatigue behaviour of two variants of diffusion aluminide coatings and conventional air plasma sprayed CoNiCrAlY + ZrO2-Y2O3 thermal barrier system, which were deposited on a cast nickel-based supperalloy substrate, was studied under symmetrical bending loading regime. The study eluc...

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Bibliographic Details
Published in:Key engineering materials 2013-11, Vol.592-593, p.716-719
Main Authors: Pokluda, Jaroslav, Čelko, Ladislav, Slámečka, Karel, Kianicová, Marta, Horníková, Jana, Švejcar, Jiří, Němec, Karel
Format: Article
Language:English
Subjects:
Bending fatigue
Coatings
Crack initiation
Diffusion
Diffusion barriers
Fatigue (materials)
Fatigue failure
Zirconium dioxide
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Summary:Room temperature fatigue behaviour of two variants of diffusion aluminide coatings and conventional air plasma sprayed CoNiCrAlY + ZrO2-Y2O3 thermal barrier system, which were deposited on a cast nickel-based supperalloy substrate, was studied under symmetrical bending loading regime. The study elucidates the differences in a fatigue crack initiation micromechanism with respect to applied stress level and its impact on the fatigue performance of studied coating systems.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.592-593.716