Abstract
Wettability is an important characteristic of solid surfaces. Enhancing the surface wettability is very important for improving the properties of materials. Superhydrophobic materials show good prospects for development in areas such as self-cleaning, anti-fog snow, anti-icing, and corrosion resistance. It has become a hot spot to develop a superhydrophobic surface with low surface free energy and good anti-adhesion properties. In this paper, nanosecond pulsed lasers were used to texture the nickel surface, and the different texturing speeds were changed. Combined with the ultrasonic treatment of low surface energy materials, nickel surfaces with different contact angles were obtained. The experimental results show that low surface energy substances can increase the contact angle of nickel surface but the extent of increase is limited. Laser microstructure induces micro & nanostructures. Ultrasonic action can adsorb certain low surface energy substances on the surface, greatly improving the hydrophobic properties of the surface, the contact angle with water up to 152? and the roll angle is less than 2?, and with the increase of the laser texturing speed, the contact angle of the nickel surface shows a decreasing trend.
Highlights
Wettability is an important characteristic of solid surfaces [1]
Ultrasonic action can adsorb certain low surface energy substances on the surface, greatly improving the hydrophobic properties of the surface, the contact angle with water up to 152 ̊ and the roll angle is less than 2 ̊, and with the increase of the laser texturing speed, the contact angle of the nickel surface shows a decreasing trend
We discussed the effect of laser texturing speed on wettability transition and analyzed the reason for the transformation.the superhydrophobic nickel surface was prepared with a contact angle of more than 150 ̊ and a roll angle of less than 10 ̊
Summary
Wettability is an important characteristic of solid surfaces [1]. It is generally characterized by a water contact angle. There is a special micro-structured surface with a water contact angle greater than 150 ̊ and a roll angle less than 10 ̊. This is the so-called superhydrophobic surface, such as the lotus leaf surface [3]. Enhancing the surface wettability of materials is very important for improving the properties of materials, especially for the development of superhydrophobic surfaces [10]. We discussed the effect of laser texturing speed on wettability transition and analyzed the reason for the transformation.the superhydrophobic nickel surface was prepared with a contact angle of more than 150 ̊ and a roll angle of less than 10 ̊
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