期刊
METALS
卷 9, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/met9060668
关键词
nanosecond laser; super-hydrophobic copper surface; micro- and nano-structures; apparent contact angle; sliding angle
资金
- Tianjin Municipal Education Commission, China [2017KJ020]
- Tianjin Municipal Science and Technology Commission, China [17JCYBJC42400]
The super-hydrophobic copper surface was obtained by using a nanosecond pulsed laser. Different micro- and nano-structures were fabricated by changing the laser scanning interval and scanning speed, before heating in an electric heater at 150 degrees C for two hours to explore the effect of laser parameters and heat treatment on the wettability of the copper surface. It was found that the laser-treated copper surface is super-hydrophilic, and then, after the heat treatment, the surface switches to hydrophobic or even super-hydrophobic. The best super-hydrophobic surface's apparent contact angle (APCA) was 155.6 degrees, and the water sliding angle (WSA) was 4 degrees. Super-hydrophobic copper is corrosion-resistant, self-cleaning, and dust-proof, and can be widely used in various mechanical devices.
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