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What Do We Know, What are the Current Limitations of Suspension Plasma Spraying?

Pierre Fauchais 1 Michel Vardelle 1 Armelle Vardelle 1 Simon Goutier 1 
1 Axe 2 : procédés de traitements de surface
SPCTS - Science des Procédés Céramiques et de Traitements de Surface
Abstract : Nano-structured coatings should exhibit better properties than micro-structured coatings because of a high volume fraction of internal interfaces. Since the mid-nineties a large body of works have been devoted to suspension and solution plasma spraying for the deposition of finely and even nanometer-structured coatings. The aim of this paper is to take stock of our present knowledge in the field of suspension plasma spraying that is, at the moment, essentially used for oxide ceramic coatings. It will first tackle the injection of the suspension in the plasma jet and the behavior of nano or sub-micro-meter particles processed in the plasma jet core involving the liquid breakup and vaporization that releases the solid particles from the solvent droplets. It will, then, deal with the plasma torches and liquid feeding systems available to suspension spraying. It will finally discuss the key characteristics of suspensions (solvent, dispersant, and particle morphologies), designing of coating microstructure, and potential industrial applications, with the developments requested to cope with these applications.
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Soumis le : jeudi 16 mars 2017 - 11:24:39
Dernière modification le : samedi 26 mars 2022 - 04:27:53

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Pierre Fauchais, Michel Vardelle, Armelle Vardelle, Simon Goutier. What Do We Know, What are the Current Limitations of Suspension Plasma Spraying?. Journal of Thermal Spray Technology, ASM International/Springer, 2015, 24 (7), pp.1120 - 1129. ⟨10.1007/s11666-015-0286-3⟩. ⟨hal-01490990⟩



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