Abstract
The analytical formulae describing the time evolution of the splat thickness and radius and the rates of their variation in the process of flattening of droplets during thermal spraying taking into account the splat curvature induced by the droplet impact are obtained. The time of finishing of the flattening process is established and is compared with those for the smooth and rough substrate surfaces. The role of the surface effects is discussed. Splat–substrate mechanical interaction is considered and the analytical formulae for the pressure developed upon the droplet impact taking into account the surface curvature are obtained. The theoretical results obtained agree with the experimentally observed tendencies of the droplet flattening.
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