S. Costil, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, China; H. Li, University of Technology Belfort-Montbeliard, Belfort cedex, France; H. Liao, LERMPS-UTBM, Belfort, France; C. Coddet, University of Technology Belfort-Montbeliard, Belfort Cedex, France
The flattening behaviour of an individual splat plays a fundamental role in the formation of thermally sprayed coatings. In the PROTAL® process, an in-situ laser treatment is coupled with spraying operations. It was shown that such a prior pulsed laser irradiation can effectively suppress the splashing phenomenon of splats. This aspect was primarily attributed to the efficient removal of surface adsorbates/condensates and it seems enhanced by the modification of the surface topography in a nano-scale range that improves the surface wettability.
Therefore, this study deals with the effects of the nano-scale surface modifications on the surface wettability induced by the PROTAL® process. Several roughness parameters characterizing the surface topography are also discussed in the light of the surface static wettability.
Summary: This study deals with the effects of the nano-scale surface modifications on the surface wettability induced by the PROTAL® process. Several roughness parameters characterizing the surface topography are also discussed in the light of the surface static wettability.
