引用本文:王冬,张振宇,张朝阳,顾秦铭,孟凡宁.皮秒激光参数对仿生跨尺度乳突织构表面润湿性的影响∗[J].中国表面工程,2021,34(3):110~119
Wang Dong,Zhang Zhenyu,Zhang Chaoyang,Gu Qinming,Meng Fanning.Effects of Picosecond Laser Parameters on Surface Wettability of Cross-scale Bionic Mastoid-like Texture[J].China Surface Engineering,2021,34(3):110~119
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皮秒激光参数对仿生跨尺度乳突织构表面润湿性的影响∗
王冬1, 张振宇2, 张朝阳3, 顾秦铭2,3, 孟凡宁2
1.中国空间技术研究院北京卫星制造厂有限公司 北京 100094;2.大连理工大学精密与特种加工教育部重点实验室 大连 116024;3.江苏大学激光技术研究所 镇江 212013
摘要:
无修饰的金属疏水表面受到广泛关注,尤其是具有超高疏水性表面的制备方法逐渐被重视。 通过皮秒激光烧蚀、电化学抛光和电化学沉积的顺序加工方法在铜表面制备一系列具有不同微观特征的乳突织构。 系统研究激光功率、重复频率、扫描速度和扫描次数对乳突织构表面形貌及疏水性的影响,并分析表面润湿性的转化机理。 研究结果表明,激光功率 9 W、重复频率 2 MHz、扫描速度 200 mm/ s、扫描次数 20 次时,跨尺度乳突织构表面静置 30 d 后可获得超高疏水性(接触角 161°,滚动角 1°)。 储存 30 d 后,亲水性的 Ni、CuO 转化为疏水性的 NiO、Ni(OH)2 、Cu2O,以及含 C 有机物的吸附促成了乳突织构表面润湿性的转化。
关键词:  皮秒激光  顺序加工  乳突织构  超疏水  转化机理
DOI：10.11933/j.issn.1007-9289.20210201002
分类号:TG174
基金项目:国家重点研发计划资助项目(2018YFA0703400)
Effects of Picosecond Laser Parameters on Surface Wettability of Cross-scale Bionic Mastoid-like Texture
Wang Dong1, Zhang Zhenyu2, Zhang Chaoyang3, Gu Qinming2,3, Meng Fanning2
1.Beijing Spacecrafts, China Academy of Space Technology, Beijing 100094 , China;2.Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian 116024 , China;3.Laser Technology Institute, Jiangsu University, Zhenjiang 212013 , China
Abstract:
Unmodified metal hydrophobic surfaces are extensively reported, and especially, the preparing methods of super- hydrophobic surfaces attract tremendous attention. Matoid-like texture surfaces with different microstructures are fabricated by the sequential methods, which contains laser ablation, electropolishing and electro-deposition. The effects of laser power, repetition frequency, scanning speed and scanning times on surface morphology and wettability of mastoid-like texture are systematically studied, and then, the transformation mechanism of surface wettability is analyzed. The ultra-high hydrophobicity of cross-scale mastoid-like texture surface can be reached after 30 days when laser power is 9 W, the repetition frequency is 2 MHz, the scanning speed is 200 mm/ s and the scanning is 20 times. The highest contact angle is 161° and the lowest sliding angle is 1°. After being stored for 30 days, the wettability conversion benefites from the transformation of hydrophilic Ni and CuO into hydrophobic NiO, Ni(OH)2 and Cu2O, and the adsorption of C-containing organics.
Key words:  picosecond laser  processing sequentially  mastoid-ike texture  super-hydrophobic  transformation mechanism
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