Direct Laser Interference Patterning as the final step in functionalization of Ti-based biomedical materials

DATA FOR AN ARTICLEDonata Kuczyńska-Zemła, Agata Sotniczuk, Jarosław Pura*, Maciej Spychalski, Roman Ostrowski, Marcin Pisarek, Piotr Bazarnik, Halina GarbaczDirect Laser Interference Patterning as the final step in functionalization of Ti-based biomedical materials Submitted to:Optics & Laser Technology Abstract: This paper investigates the influence of the substrate – particularly its phase composition and crystal defect density –on the surface properties of Ti-based materials after direct laser interference patterning (DLIP) processing. Hence, twotitanium biomedical alloys (CP-Ti and Ti-Nb-Ta-Zr), in both microcrystalline states and after plastic deformation (coldrolling),were subjected to DLIP under identical laser parameters to produce a micrometric groove-like surface pattern.The modified surfaces were characterized in terms of microstructure, roughness, chemical composition, wettability, andmechanical properties. Furthermore, corrosion tests were performed in Hank’s solution to assess the impact of the surfacetreatment on the investigated system’s corrosion resistance in biomedical applications. The results demonstrated thatDLIP is a universal technique for modifying the surface of both Ti-alloys, independently of the phase composition andcrystal defect density. The most pronounced differences in surface properties between the microcrystalline and cold-rolledstates after DLIP were observed in the nitrogen content in the surface layer, as well as in the water contact angle andsurface roughness. Which may be directly related to the substrate’s grain size before laser treatment. However, for eachmaterial, the corrosion resistance remained comparable between the different states.Content*: (DATA arranged in folders)1.SEM - Scanning Electron Microscope observations after DLIP (surface and crosssection) 2.OpticalProfilometry - Optical Profilometry of samples after DLIP3.Nanohardness - Nanoindentation 5.Wetting - wetting angle measurments6.Corrosion *) all files contain the following symbols in their names relating to the type of titanium sample:TNTZ - samples made odf TNTZ alloyTiG2/Ti - smaples made of Titanium Grade 2SW - samples without Cold EollingCR - samples after Cold Rolling Acknowledgments:This work was supported by The National Science Centre Poland [Grant number 2022/45/B/ST5/03398] Principal Investigator: Halina Garbacz.