激光与光电子学进展, 2018, 55 (9): 091404, 网络出版: 2018-09-08
飞秒激光加工YG6不同微织构表面浸润性研究 下载: 706次
Surface Wettability of Different Micro-Textured YG6 Processed by Femtosecond Lasers
激光技术 浸润性 微织构 飞秒激光 硬质合金YG6 laser technique wettability micro texture femtosecond laser cemented carbide YG6
摘要
采用波长为800 nm的飞秒激光在硬质合金YG6表面加工出微凹坑形貌, 分别测量了微凹坑的形貌参数和表面接触角, 从而获得最佳加工参数, 分析了微凹坑形状、分布密度和单个面积对表面接触角的影响。基于Wenzel模型和Cassie模型的中间状态理论, 分析了微凹坑形状对表面接触角的影响机理。结果表明:当平均功率低于200 mW时, 微凹坑表面形貌较好, 微凹坑深度与扫描次数呈线性关系; 微凹坑表面接触角随着微凹坑分布密度的增大而减小, 随着单个微凹坑面积的增大而增大。不同形状微凹坑的浸润性优劣顺序依次为正三角形、正方形、正六边形、圆形。
Abstract
A femtosecond pulsed laser with wavelength of 800 nm is used to process micro-pits on the surface of cemented carbide YG6. The morphology parameters and surface contact angles of these micro-pits are measured to obtain the optimal processing parameters. The effects of micro-pit shape, distribution density and single micro-pit area on the surface contact angle are analyzed. Based on the middle state theory of Wenzel and Cassie models, the influence mechanism of micro-pit shape on surface contact angle is analyzed. The results show that the micro-pit surface morphology is relatively good and there exists a linear relationship between the micro-pit depth and number of scanning when the average power is lower than 200 mW. The micro-pit surface contact angle decreases with the increase of micro-pit density and increases with the increase of single micro-pit area. The shapes of micro-pits in the order of excellence of surface wettability are as follows: regular triangle, regular square, regular hexagon and circle.
杨奇彪, 陈中培, 杨涛, 张弘, 娄德元, 刘顿. 飞秒激光加工YG6不同微织构表面浸润性研究[J]. 激光与光电子学进展, 2018, 55(9): 091404. Yang Qibiao, Chen Zhongpei, Yang Tao, Zhang Hong, Lou Deyuan, Liu Dun. Surface Wettability of Different Micro-Textured YG6 Processed by Femtosecond Lasers[J]. Laser & Optoelectronics Progress, 2018, 55(9): 091404.