Development of thermal barrier coating systems from Al microparticles -Part II: Characterisation of mechanical and thermal transport properties - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Coatings Année : 2022

Development of thermal barrier coating systems from Al microparticles -Part II: Characterisation of mechanical and thermal transport properties

Résumé

In this study, the mechanical resistance and the thermal insulation potential of novel thermal barrier coatings (TBCs) made of a foam of hollow alumina particles are assessed through scratch testing, micro-indentation and thermal diffusivity measurements using laser-flash. The thermal diffusivity of the foam coatings ranges between 0.6 × 10−7 and 5 × 10−7 m2·s−1 and is thus comparable with the thermal insulation potential of the standard plasma-sprayed (PS) and electron beam–physical vapour-deposited (EB-PVD) TBCs made of yttria-stabilised zirconia (YSZ). The coatings annealed in more oxidative atmospheres exhibit greater mechanical resistance due to the thickening of the alumina shells and the increased sintering of the foam. However, when the oxidation is poorly tailored, the adhesion of the foam to the substrate decreases due to the presence of unwanted oxide that grows at the substrate/coating interface.
Fichier principal
Vignette du fichier
Al slurry_Characterization_HAL.pdf (1.54 Mo) Télécharger le fichier
Al slurry_Characterization_HAL (1).pdf (1.54 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04458236 , version 1 (14-02-2024)

Identifiants

Citer

Germain Boissonnet, Jean-Luc Grosseau-Poussard, Gilles Bonnet, Fernando Pedraza. Development of thermal barrier coating systems from Al microparticles -Part II: Characterisation of mechanical and thermal transport properties. Coatings, 2022, 12 (2), pp.106. ⟨10.3390/coatings12020106⟩. ⟨hal-04458236⟩
4 Consultations
3 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More