Manufacturing nanostructured YSZ coatings by suspension plasma spraying (SPS): effect of injection parameters

E Meillot (1) , R Vert (1) , C Caruyer (1) , D Damiani (1) , Michel Vardelle (2)

1 DAM - Direction des Applications Militaires
2 Axe 2 : procédés de traitements de surface

The suspension plasma spraying process is investigated by using shadow imaging techniques to appreciate the different trajectories of the liquid jet interacting with a DC highenergy plasma flow. Then, the modelling of different liquid injections (isolated droplet, train of droplets and continuous jet) helps to determine which injection type must be preferred. From that, coating depositions have been carried out with yttria zirconia suspension. Trajectory deviations at impact have been measured depending on the injection pressure and injection location. Coatings have been realized under the same operating investigations and their microstructures and mechanical properties have been characterized.

Mots clés: micro Vickers; suspension plasma spraying; shadow imaging; coating; trajectory deviation; mechanical properties; hardness; nano indentation; micro Vickers.

Domaines: Matériaux

E Meillot, R Vert, C Caruyer, D Damiani, Michel Vardelle. Manufacturing nanostructured YSZ coatings by suspension plasma spraying (SPS): effect of injection parameters. Journal of Physics D: Applied Physics, 2011, 44 (19), pp.194008. ⟨10.1088/0022-3727/44/19/194008⟩. ⟨hal-00615140⟩