![]() In contrast, in the water environment, the wettability presents an important contribution to the properties of contact surfaces: hydrophobic surfaces exhibit a lower friction coefficient, especially at higher densities of μ-channels. In the case of dry friction, increased μ-roughness leads to a higher friction coefficient, and the water-repellency modification by nanosilica particles has no influence on the tribological behaviour. Experiments were performed in dry and water environments. This enables a study of the combined effect of surface wettability and morphology on the friction coefficient and wear resistance. A higher μ-channel density leads to more hydrophobic surfaces after coating. After nanosilica coating, the superhydrophilic laser-textured surfaces change into superhydrophobic surfaces with the same μ-roughness. Surface modification by varying the distance between laser-produced micro(μ)-channels leads to different surface roughnesses. In this work, we present functionalization of AISI 316 L surfaces by nanosecond Nd:YAG laser texturing and adsorption of superhydrophobic fluoroalkylsilane functionalized 30-nm silica nanoparticles.
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