摘要
激光透射连接异种生物相容性材料在生物医学植入体中具有良好的应用前景。本文采用振镜扫描激光连接系统进行了0.1 mm聚对苯二甲酸乙二酯(PET)薄膜与0.1 mm 316L不锈钢薄板之间的激光透射连接试验。采用开环控制和闭环控制分析温度对连接质量的影响,使用光学显微镜对接头形貌进行观测。开环控制得到了激光透射连接过程的工艺参数窗口,并通过高温计分析出获得较好连接质量时的温度范围;在开环控制得到温度基础上采用闭环控制,所得的试验结果证明振镜扫描系统中闭环控制在激光透射连接过程中能得到更好的连接质量,更具有优势。
Laser transmission joining of dissimilar and biocompatible materials has potential application in biomedical implants and their encapsulation process. In this research, 0. 1 mm PET films and 0. l mm 316L stainless steel are joint using galvanometer scanning laser transmission joining system. The effect of temperature on joint quality is investigated by using open-loop control and closed- loop control, the profiles of the joints were observed by optical microscopy. The process parameters windows of the laser transmission joining are obtained through open-loop control, the temperature range of getting better joint quality is analyzed by pyrometer. Using closed-loop control based on the temperature range of open-loop control, the better results can be obtained in closed-loop control of galvanometer scanning laser transmission joining system.
出处
《应用激光》
CSCD
北大核心
2011年第4期285-290,共6页
Applied Laser
关键词
激光透射连接
生物医学植入体
连接质量
开环控制
闭环控制
laser transmission joining
biomedical implant
joint quality
open-loop control
closed-loop control
