采用激光加工技术在Ti6Al4V表面分别加工直线、网格和具有规则点阵状结构的表面纹理,采用自组装技术制备自组装分子膜。采用扫描电镜、形貌分析仪和接触角测量仪对成膜后的钛合金表面进行形貌和接触角的表征与测量。结果表明,通过激光加工和沉积自组装分子膜,可显著增大Ti6Al4V的水接触角。其中直线纹理的试样表面水接触角可达124.8°,网格纹理的试样表面接触角可达126.1°,点阵状纹理的试样表面接触角可达151.6°。表面接触角与表面粗糙度相关,随着表面粗糙度值的增大,接触角呈增大趋势,当表面粗糙度>4μm时,接触角均>150°,形成超疏水表面。 Laser processing technology was used to process straight lines, grids and surface texture with regular lattice-like structure on the surface of Ti6Al4V respectively. Self-assembly technique was used to fabricate self-assembled molecular films. The morphology and contact angle of the formed titanium alloy were characterized and measured by scanning electron microscopy, morphology analyzer and contact angle measuring instrument. The results show that the water contact angle of Ti6Al4V can be significantly increased by laser processing and self-assembly of molecular films. The water contact angle of sample with linear texture can reach 124.8 °, the contact angle of sample with grid texture can reach 126.1 °, and the contact angle of sample with lattice-like texture can reach 151.6 °. The contact angle of the surface is related to the surface roughness. With the increase of surface roughness, the contact angle increases. When the surface roughness is> 4μm, the contact angle is> 150 °, forming a superhydrophobic surface.