摘要
为了改善医用钛的表面性能,增强植入物与骨组织之间的结合强度,采用400 WNd:YAG激光器,在压缩空气辅助条件下,对纯Ti进行激光微加工试验,并研究了激光加工工艺参数对微孔形状的影响.实验结果表明,随着激光辐照脉冲能量、脉冲宽度、脉冲次数的增加,微孔的孔径和孔深增加.激光辐射脉冲频率增加,微孔孔径加大,而孔深基本不变.采用优化的激光微加工工艺参数,对纯钛样品进行激光显微加工,可获得表面排布有规律的微孔,从而有利于扩大医用钛的临床应用范围.
Laser microdrilling with compressed air as adjuvant gas was performed using 400 W Nd： YAG laser to improve the surface properties of biomedical titanium and enhance the bonding strength between the implant and bone. The influence of the drilling parameters on the shape of microholes was studied. The experimental results show that both diameter and depth of microholes increase with increasing pulse energy, pulse width and pulse number. The depth of microholes is not affected by pulse frequency while the diameter of microholes increases with the pulse frequency. Regularly patterned microholes can be produced with the optimized microdrilling parameters on pure titanium, which is favorable for extending application of biomedical titanium in clinic.
出处
《沈阳工业大学学报》
EI
CAS
2008年第4期424-428,共5页
Journal of Shenyang University of Technology
基金
中国博士后科学基金资助项目(20060400957)
辽宁省教育厅研究发展计划资助项目(05L301
20060636)
