摘要
通过皮秒激光对304不锈钢表面进行刻蚀获得了光栅微纳结构,分析了该微纳结构的尺寸及该不锈钢的表面形貌,研究了不同激光加工参数对微纳结构的影响。结果表明,平均功率对激光烧蚀率及光栅微纳结构尺寸具有显著影响;增大扫描速率,光栅微纳结构深度减小,宽度基本保持不变,激光烧蚀率呈不规则波动;加工次数的增大则会减小激光烧蚀率。激光加工不锈钢表面制备微纳结构的较优工艺条件为高平均功率、较大扫描速率和小加工次数,在该工艺条件下微纳加工不锈钢表面获得了超疏水性能。
The grating micro-nano structure is fabricated by picosecond lasers on the 304 stainless steel surface. The size of this micro-nano structure and the surface morphology of this processed stainless steel are characterized. The influences of different laser processing parameters on the micro-nano structure are studied. The result shows that the average power has a significant influence on the laser ablation rate and the size of grating micro-nano structure. If the scanning speed increases, the depth of the grating micro-nano structure decreases, while the width remaines unchanged and the laser ablation rate shows an irregular fluctuation. The laser ablation rate decreases if the processing times increase. The better process conditions for fabricating micro-nano structures on the stainless steel surface are as follows： high average power, high scanning speed and low processing times, under which the superhydrophobic surface of stainless steel can be obtained successfully.
作者
谢志伟
董世运
闫世兴
李恩重
汪宏斌
李重河
Xie Zhiwei1, Dong Shiyun2, Yan Shixing2, Li Enzhong2, Wang Hongbin1, Li Chonghe1(1 School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China ; 2 National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, Beijing 100072, Chin)
出处
《激光与光电子学进展》
CSCD
北大核心
2018年第3期343-350,共8页
Laser & Optoelectronics Progress
基金
国家重点研发计划(2016YFB1100205)
北京市科技专项(Z161100004916009)
北京市科技计划(Z161100001516007)
关键词
激光技术
激光加工
形貌调控
微纳结构
加工参数
皮秒激光
laser technique
laser processing
morphological adjustment
micro-nano structures
processing parameters
picosecond laser
