Atmospheric Plasma Spraying Evolution Since the Sixties Through Modeling, Measurements and Sensors

Pierre Fauchais (1) , Michel Vardelle (1) , Simon Goutier (1)

1 Axe 2 : procédés de traitements de surface

This paper presents, through examples, the evolutions of atmospheric plasma spraying since the sixties. The drastic improvement of the spray conditions and coatings reproducibility during more than 50 years was linked both to researches in laboratories and developments of spray equipment’s (plasma torches, computerized control panels, robots to spray coatings on complex parts, sensors working in the harsh environment of spray booths…). This evolution is illustrated through the following topics: (1) plasma forming gas thermodynamic and transport properties either at local thermodynamic equilibrium or more recently at two temperatures; (2) evolution of plasma spray torches since the nineties; (3) plasma jet and in-flight particle measurements with laboratory equipment’s and then sensors in spray booths; (4) plasma jets and torches modeling as well as heat and momentum transfer to particles; (5) splats formation and layering.

Mots clés: History; Plasma spraying; Spray conditions improvement

Domaines: Matériaux

Pierre Fauchais, Michel Vardelle, Simon Goutier. Atmospheric Plasma Spraying Evolution Since the Sixties Through Modeling, Measurements and Sensors. Plasma Chemistry and Plasma Processing, 2017, ⟨10.1007/s11090-017-9802-1⟩. ⟨hal-01490048⟩