20.500.12556/RUL-111111 Short- and long-term wettability evolution and corrosion resistance of uncoated and polymer-coated laser-textured steel surface We present the results of one year observation of wetting and corrosion properties of nanosecond fiber laser-textured stainless steel, uncoated and coated with epoxy or FAS (fluoroalkylsilane)-TiO$_2$/epoxy. A comparative study was performed on samples kept under ambient conditions and in reduced air pressure and humidity. The results show the ability to induce wettability conversion from initially superhydrophilic to final superhydrophobic state either indirectly by ageing the uncoated laser-textured surface or directly by application of FAS-TiO$_2$/epoxy coating. The storage conditions significantly influenced the wettability development of uncoated laser-textured steel, i.e., the process of ageing was slowed down in reduced air pressure and humidity. Detailed surface chemical analysis revealed that adsorption of the organic matters from the surrounding media influences the wettability conversion and ageing. However, the ageing of the coated surfaces was not affected by the storage conditions. Corrosion stability of uncoated laser-textured surfaces was enhanced over time due to the wettability transition, depending on their morphology. Coatings represent a superior barrier over the texture and wettability with the stable long-term surface protection against aggressive media. stainless steels laser surface engineering wettability conversion surface chemistry polymer coatings nerjavna jekla laserski inženiring površin omočljivost korozijska odpornost true false true Angleški jezik Slovenski jezik Članek v reviji 2019-09-24 14:10:38 2019-09-24 14:10:41 2022-08-23 03:40:52 0000-00-00 00:00:00 2019 0 0 15 str. iss. 9, art. 592 Vol. 9 Sep. 2019 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 544.722.3:669.14.018.8 (045) 2079-6412 10.3390/coatings9090592 1510570 RAZ_Conradi_Marjetka_2019.pdf RAZ_Conradi_Marjetka_2019.pdf 1 B9DCA6E96F02AE56D738991AC431F6A5 d018cf33282da49bda0dff3838aba148018000adbeba60c5d3d3c79042ea9fa5 01aa9e4a-3bd0-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=150437 https://www.mdpi.com/2079-6412/9/9/592 0 db10becf-3bcf-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=150436 Fakulteta za strojništvo 0 0 0