Mechanical and thermo-physical properties of plasma-sprayed thermal barrier coatings: a literature survey

Pierre Planques (1, 2, 3) , Vanessa Vidal (1) , Philippe Lours (1) , Vincent Proton (2) , Fabrice Crabos (2) , Julitte Huez (3) , Bernard Viguier (3)

1 ICA - Institut Clément Ader
2 SAFRAN Group
3 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux

Atmospheric plasma-sprayed thermal barrier coatings (APS TBCs) have been studied from an extensive review of the dedicated literature. A large number of data have been collected and compared, versus deposition parameters and/or measurement methods, and a comparison was made between two different microstructures: standard APS coatings and segmented coatings. Discussion is focused on the large scattering of results reported in the literature even for a given fabrication procedure. This scattering strongly depends on the methods of measurement as expected, but also—for a given method—on the specific conditions implemented for the considered experimental investigation. Despite the important scattering, general trends for the correlation of properties to microstructure and process parameters can be derived. The failure modes of TBC systems were approached through the evolution of cracking and spalling at various life fractions.

Mots clés: Thermal barrier coatings (TBC); Mechanical properties; Air plasma sprayed (APS); Cracking

Domaines: Matériaux; Science des matériaux [cond-mat.mtrl-sci]; Génie des procédés; Matériaux

Pierre Planques, Vanessa Vidal, Philippe Lours, Vincent Proton, Fabrice Crabos, et al.. Mechanical and thermo-physical properties of plasma-sprayed thermal barrier coatings: a literature survey. Oxidation of Metals, 2017, vol. 88 (n° 1-2), p.133-143. ⟨10.1007/s11085-016-9693-1⟩. ⟨hal-01579759⟩