医用锆基块体非晶合金飞秒激光加工表面特性研究  

Surface Characteristics of Medical Zr-Based Bulk Metallic Glass Processed by Femtosecond Laser

作　　者：姚燕生 葛张森 陈庆波 唐建平 张亦元 Yao Yansheng;Ge Zhangsen;Chen Qingbo;Tang Jianping;Zhang Yiyuan(College of Mechanical and Electrical Engineering,Anrhui Jianzhu University,Hefei,Anbuui 230601,China;Micro Nano Engineering Laboratory,Unicersity of Science and Technolog of China,Hefei,Anhui 230022,China;Key Laboratory of Intelligent Manafacturing of Constrnction Machinery,Hefei,Auhui 230601,China)

机构地区：[1]安徽建筑大学机械与电气工程学院,安徽合肥230601 [2]中国科学技术大学微纳米工程实验室,安徽合肥230022 [3]安徽省工程机械智能制造重点实验室,安徽合肥230601

出　　处：《激光与光电子学进展》2020年第11期122-128,共7页Laser & Optoelectronics Progress

基　　金：安徽省自然科学基金面上项目(1908085ME130);安徽省高校自然科学基金重点项目(KJ2019A0791)。

摘　　要：利用飞秒激光扫描医用锆基块体非晶合金表面制备直线结构,通过扫描电镜观察分析试样表面微观形貌变化,使用接触角测量仪测量加工前后及放置3个月后试样的接触角,并同时使用X射线光电子能谱仪对表面化学成分进行测量分析,最后利用电化学工作站测试其耐腐蚀性。从测试结果可以看出:加工前的锆基块体非晶合金表面表现出一定的亲水性,通过飞秒激光处理后,变为超亲水;在室内用密封袋封装3个月后,飞秒激光加工后的表面的接触角显著增大;测量加工前后样品腐蚀时的开路电压分别为-0.96 V、-0.93 V。经飞秒加工后的非晶合金开路电压更高,与未加工样品相比耐腐蚀性更强。实验结果表明:经飞秒激光表面处理后的非晶合金具有更好的亲水性和耐腐蚀性,增强了作为医用植入体在人体内的适用性。A medical Zr-based bulk metallic glass linear structure was treated by scanning its surface using a femtosecond laser.The surface morphological changes in the samples were observed by scanning electron microscopy.The contact angles of the samples before,directly after fabrication,and three months after fabrication were measured using a contact angle meter,and the surface chemical composition was analyzed by X-ray photoelectron spectrometer.An electrochemical workstation was used to compare the corrosion speed before and after fabrication.Although the initial surface of the Zr-based bulk metallic glass exhibited a certain degree of hydrophilicity,after microstructural surface treatment by a femtosecond laser,the hydrophilicity was considerably improved.The contact angle of the surface after femtosecond laser treatment increased significantly after 3 months of indoor sealing bag preservation.The open-circuit voltage of the samples before and after processing was-0.96 V and-0.93 V,respectively.After the femtosecond processing,the Zr-based bulk metallic glass had a higher open-circuit voltage and better corrosion resistance than the unprocessed sample.Experimental results show that the bulk metallic glass surface treated by the femtosecond laser is more hydrophilic and corrosion resistant,thus enhancing its applicability as a medical implant in the human body.

关 键 词：激光光学 锆基块体非晶合金 飞秒激光加工 表面形貌 化学成分 亲水性 耐腐蚀性 

分 类 号：TN249[电子电信—物理电子学]