Effect of Bond Coating Surface Morphology on the TBC System Lifetime - Centre Interuniversitaire de Recherche et d’Ingénierie des Matériaux
Article Dans Une Revue High Temperature Corrosion of Materials Année : 2024

Effect of Bond Coating Surface Morphology on the TBC System Lifetime

Résumé

Abstract A study on the effect of bond coating (BC) surface modifications prior to ceramic deposition is presented. Grit blasting and polishing were used to modify the BC surface finish. Thermal barrier coating (TBC) systems were made of a commercial yttria-stabilized zirconia (YSZ) deposited by electron beam physical vapor deposition on a β -(Ni,Pt)Al-coated Ni-based single crystal superalloy. Surface roughness measurements and scanning electron microscopy observations, before and after thermal cycling at 1100 °C, were performed to investigate the influence of the initial surface treatment on the YSZ/BC interface morphology and top coat spallation resistance. Surface states enhancing TBC spallation resistance have been found. In particular, it is shown that rumpling can be avoided even in the presence of phase transformations in the BC, by grinding samples with P600 SiC paper or by applying an “heavy” grit blasting leading to a thinner BC.
Fichier principal
Vignette du fichier
2024 HTCM Hervier rugosite TBC HTCPM2024 s11085-024-10302-6.pdf (3.38 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04680398 , version 1 (28-08-2024)

Identifiants

Citer

S. Hervier, Marie-Margaux Desagulier, Daniel Monceau. Effect of Bond Coating Surface Morphology on the TBC System Lifetime. High Temperature Corrosion of Materials, 2024, ⟨10.1007/s11085-024-10302-6⟩. ⟨hal-04680398⟩
7 Consultations
0 Téléchargements

Altmetric

Partager

More