Abstract: This study investigated surface roughness, the wettability behavior, and surface energy of Co-based alloy specimenstextured using the biomimetic Laser Surface Texturing (LST) method. The surface texture was inspired by the patternsfound on marine shells. The impacts of the parameters on wettability, Surface Free Energy (SFE), surface topography, andtexture roughness generated by the laser beam tracking a spiral path were investigated. Reducing spiral pitch producesmore complicated and chaotic surface patterns. Most surfaces are hydrophobic, and surface roughness and topographyinfluence the Contact Angle (CA). Topography and roughness were affected by frequency and scanning speed; a decreasein scanning speed and frequency generated more chaotic and irregular surface textures. With general factorial analysis andAnalysis of Variance (ANOVA), our statistical study reveals that accounting for 88% of the influence, the scanning speedis the primary factor influencing surface roughness. On the other hand, the spiral pitch is essential for defining the structural features of the surface, even if it less influences roughness. The SFE of laser-textured CoCr28Mo alloy specimenswas optimizable within the range of 14–32 mN/m. The relevant findings offer valuable insights into optimizing LST forthe specific surface properties of the Co-based alloy.

Key words: Bio-inspired surface, CoCr28Mo alloy, Wettability, Surface roughness, Surface free energy')">Bio-inspired surface, CoCr28Mo alloy, Wettability, Surface roughness, Surface free energy