飞秒激光制备可调控铝合金表面微沟槽结构研究  

Research on Femtosecond Laser Fabrication of Adjustable Micro-groove Structure on Aluminum Alloy Surface

作　　者：刘克 刘子源 陶海岩[1] 林景全[1] LIU Ke;LIU Ziyuan;TAO Haiyan;LIN Jingquan(School of Physics,Changchun University of Science and Technology,Changchun 130022)

机构地区：[1]长春理工大学物理学院,长春130022

出　　处：《长春理工大学学报（自然科学版）》2022年第3期6-13,共8页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：吉林省自然科学基金(20200201250JC)。

摘　　要：近年来,仿生微沟槽减阻技术逐渐成为当今学者研究的热点。飞秒激光微纳加工技术相比于传统的机械微加工技术在制备可控形貌微结构方面具有一定优势。但在用飞秒激光制备微沟槽的过程中,怎样在保证加工效率的前提下精确地调控微沟槽的形貌尺寸尚待解决。使用飞秒激光在6061型铝合金表面进行了可控形貌尺寸的微沟槽结构的制备,讨论了激光功率、重复频率、扫描速度、扫描次数对微沟槽形貌尺寸的影响规律,从而获得微结构的精确调控策略,制备出了适用于航空减阻的对称V形沟槽结构。该研究对今后飞秒激光制备航空航天材料减阻微纳结构表面具有一定指导意义。In recent years,the bionic micro-groove drag reduction technology has gradually become a hot spot for scholars today. Femtosecond laser micro-nano processing technology has certain advantages compared with traditional mechanical micro-processing technology in preparing microstructures with controllable morphology. However,in the process of fabricating micro-grooves with femtosecond lasers,how to accurately adjust the morphology and size of micro-grooves under the premise of ensuring processing efficiency wasn’t resolved. In this paper,a femtosecond laser was used to fabricate a microgroove structure with controllable morphology on the surface of 6061 aluminum alloy. The influence of laser power,repetition frequency,scanning speed,and scanning times on the micro-groove morphology and size was discussed. Thus,the precise control strategy of the microstructure was obtained;and a symmetrical V-shaped groove structure suitable for aviation drag reduction was prepared. There is a certain guiding significance for the future femtosecond laser preparation of aerospace materials drag-reducing micro-nano structure surface.

关 键 词：飞秒激光 铝合金 微沟槽 可调控形貌尺寸 

分 类 号：O531[理学—等离子体物理]