Suspension plasma spraying of zirconia coatings : process and coating structure

O. Tingaud (1) , R. Etchart-Salas (1) , Vincent Rat (2) , Jean-François Coudert (2) , Hélène Ageorges (2) , Alain Grimaud (2) , Alain Denoirjean (2) , Pierre Fauchais (2) , Ghislain Montavon (1) , N. Caron (3) , S. Alexandre (3)

1 SPCTS - Science des Procédés Céramiques et de Traitements de Surface
2 Axe 2 : procédés de traitements de surface
3 CEA Le Ripault - CEA Le Ripault

Suspension plasma spraying (SPS) permits to manufacture finely structured coatings (nano- or submicron-sized) coatings. Compared to conventional plasma spraying, SPS exhibit several major differences: i) a more pronounced sensitivity to arc root fluctuations; ii) a shorter spray distance; iii) a higher thermal flux transmitted from the plasma flow to the substrate. Several operating parameters play relevant roles in the suspension processing and the coating architecture.

Mots clés: Suspension Plasma Spraying; suspension injection; coating structure

Domaines: Matériaux

O. Tingaud, R. Etchart-Salas, Vincent Rat, Jean-François Coudert, Hélène Ageorges, et al.. Suspension plasma spraying of zirconia coatings : process and coating structure. 18th International Symposium on Plasma Chemistry, Aug 2007, Kyoto, Japan. 4 p. ⟨hal-00262292⟩