激光参数对生物医用钛合金表面形貌及润湿性的影响研究  

Research on the Influence of Laser Parameters on the Surface Morphology and Wettability of Biomedical Titanium Alloys

作　　者：孙晓玲 李玉瑶 王菲[2,3] 窦喆 SUN Xiaoing;LI Yuyao;WANG Fei;DOU Zhe(School of Life Science and Technology,Changchun University of Science and Technology,Changchun 130022;School of Optoelectronic Engineering,Changchun University of Science and Technology,Changchun 130022;Zhongshan Institute of Changchun University of Science and Technology,Zhongshan 528437)

机构地区：[1]长春理工大学生命科学技术学院,长春130022 [2]长春理工大学光电工程学院,长春130022 [3]长春理工大学中山研究院,中山528437

出　　处：《长春理工大学学报(自然科学版)》2025年第1期101-109,共9页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：中山市社会公益科技研究项目(2023B2013)。

摘　　要：钛合金具有良好的力学性能和生物相容性,被广泛应用于医疗领域。然而,由于其表面呈现亲水性,在实际应用中难免会出现污染、腐蚀等问题,进而缩短使用寿命。为了进一步增强钛合金的性能,本研究采用皮秒激光加工制备出具有多级微结构的钛合金超疏水表面,研究了激光工艺参数对表面形貌、表面粗糙度以及表面润湿性的影响。实验结果表明:扫描间距分别为20μm、40μm、60μm、80μm和100μm时,表面固体-液体接触占比不同,进而导致表面润湿性的差异;扫描速度分别为100 mm/s、200 mm/s、300 mm/s、400 mm/s和500 mm/s时,表面结构的深度不同,从而产生不同的表面润湿性。在保持激光功率为10.2 W,扫描次数为3次不变的情况下,当扫描间距为60μm且扫描速度为200 mm/s时,成功制备出一种钛合金超疏水表面。该表面具有低粘附性和自清洁性,静态接触角达到(152.71±0.54)°,滚动角为(8.12±0.47)°。该研究不仅为钛合金的表面改性提供了新的技术路径,也为钛合金在生物医学领域的进一步应用和开发奠定了坚实的基础。Titanium alloys possess excellent mechanical properties and biocompatibility,and are widely used in the medical field.However,due to their surface hydrophilicity,contamination and corrosion issues are inevitable in practical applications,thereby shortening their service life.To further enhance the performance of titanium alloys,this study employs picosecond laser processing to fabricate titanium alloy surfaces with multi-level microstructures,investigating the effects of laser process parameters on surface morphology,surface roughness,and surface wettability.Experimental results indicate that when the scanning spacings are 20μm,40μm,60μm,80μm,and 100μm,the solid-liquid contact ratio on the surface varies,leading to differences in surface wettability;when the scanning speeds are 100 mm/s,200 mm/s,300 mm/s,400 mm/s,and 500 mm/s,the depth of the surface structures differs,resulting in varying surface wettability.With the laser power maintained at 10.2 W and the time of scan set to 3,a titanium alloy superhydrophobic surface was successfully fabricated when the scanning spacing was 60μm and the scanning speed was 200 mm/s.This surface exhibits low adhesion and self-cleaning properties,with a static contact angle of(152.71±0.54)°and a rolling angle of(8.12±0.47)°.This study not only provides a new technological approach for the surface modification of titanium alloys but also lays a solid foundation for their further application and development in the biomedical field.

关 键 词：激光加工 钛合金 超疏水 润湿性 

分 类 号：O409[理学—物理]