20.500.12556/RUL-101211 Wettability and friction control of a stainless steel surface by combining nanosecond laser texturing and adsorption of superhydrophobic nanosilica particles 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. Surface modification by varying the distance between laser-produced micro([micro])-channels leads to different surface roughnesses. After nanosilica coating, the superhydrophilic laser-textured surfaces change into superhydrophobic surfaces with the same [micro] -roughness. A higher [micro] -channel density leads to more hydrophobic surfaces after coating. This enables a study of the combined effect of surface wettability and morphology on the friction coefficient and wear resistance. Experiments were performed in dry and water environments. In the case of dry friction, increased [micro]-roughness leads to a higher friction coefficient, and the water-repellency modification by nanosilica particles has no influence on the tribological behaviour. 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 [micro] -channels. Energy-dispersive X-ray spectroscopy analysis of surfaces before and after the tribological experiments is performed, revealing the difference in weight % of Si in the worn surface compared to the unworn surface, which varies according to the nature of the surface morphology due to laser texturing in both dry and water environments. surface engineering wettability tribology inženiring površin omočljivost tribologija true false false Angleški jezik Slovenski jezik Neznano 2018-05-14 10:55:08 2018-05-14 10:55:12 2025-03-06 10:04:13 0000-00-00 00:00:00 2018 0 0 9 f. Vol. 8 2018 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.178:535(045) 2045-2322 :10.1038/s41598-018-25850-6 16039707 RAZ_Conradi_Marjetka_i2018.pdf RAZ_Conradi_Marjetka_i2018.pdf 1 7CB4CA8373CBB24C16FB334E8D730D0C 1a54d23823f52c7e4e6525c25e145558462b572b54bb521851e519a50acf3c37 335dbb25-a1b5-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=111150 https://www.nature.com/articles/s41598-018-25850-6 0 09e6fecc-fa69-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=200385 Fakulteta za strojništvo 0 0 0