| 摘要: |
| 以蝉翅表面疏水结构为仿生对象，利用高速精密微铣削机床在铝合金表面构建柱状微阵列结构，对构建的柱状微阵列结构的微观结构、疏水性能和表面粗糙度进行观测，并对其疏水机理进行分析。结果表明：在本征接触角约为51°的光滑铝合金表面上加工微米级柱状微阵列结构可有效提高材料表面的疏水性能，未经化学修饰的表面接触角最高可达115°，实现了基于高速精密微铣削技术在金属材料表面上构建微观结构阵列，使材料表面润湿性由亲水向疏水的转变。 |
| 关键词: 仿生 疏水性能 微铣削 微观结构 |
| DOI：10.3969/j.issn.1007-9289.2013.05.007 |
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| Hydrophobic Aluminum Alloy Surface Fabricated by High Speed Micromilling Technology |
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WAN Yanling, ZHANG Xuerui, ZHANG Liuxin, YU Zhanjiang1,2
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1.College of Mechanical and Electric Engineering, Changchun University of Science and Technology, Changchun, 130022;2.Key Laboratory of Engineering Bionics Minisity of Education, Jilin University, Changchun, 130022
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| Abstract: |
| To simulate the hydrophobic microstructure of cicada wing surface, a high speed precise micromilling machine was used to fabricate columnar microstructure arrays on aluminum alloy substrate. Microstructure, hydrophobicity and surface roughness of bionic specimen were investigated, and the hydrophobic mechanism of bionic specimen was analyzed. The results show that the columnar microstructure arrays can effectively improve the hydrophobic properties of aluminum alloy, and the contact angle value is improved from 51°up to 115°. Using the high speed precise micromilling machine to fabricate microstructure arrays on metal surface, the change of surface wettability from hydrophilic to hydrophobic is realized. |
| Key words: bionic hydrophobicity micromilling microstructure |
