Abstract
Many studies have shown that super hydrophobic surfaces have been applied to micro–nano structures and low surface energy materials. In the present study, infrared laser scanning and simple salinization modification were used to improve the hydrophobicity of a surface. When the scanning speed was 100 mm/s, the laser power was 30 W and the scanning interval was 200 μm, the apparent contact angle of surface was up to 157°. The assessment of surface characteristics revealed that decreasing scanning speed or increasing laser power were able to improve the hydrophobicity of the surface. After aging treatment, the superhydrophobic surface prepared by this method still had good durability.
Highlights
Superhydrophobicity has attracted the attention of many researchers due to the great importance in both its fundamental research and applications [1]
In view of the specific wetting state [3], the superhydrophobic surface can be used in many fields, such as drag reduction [4,5], antifrosting [6], corrosion resistance [7,8], self-cleaning [9,10] and microfluid transportation [11,12]
This study provides a facile method of fabricating superhydrophobic surfaces on Al alloy materials which enhances the application field of research and industry
Summary
Superhydrophobicity has attracted the attention of many researchers due to the great importance in both its fundamental research and applications [1]. Materials 2019, 12, 3860 surfaces in the shortest exposure time is 50–150 μm During these intervals, stable Cassie-Baxter state superhydrophobic surfaces can be fabricated. They may be expensive, have strict requirements of conditions, or be unstable and uncontrollable [35] In these aspects, the infrared laser irradiation is different from these other methods. We used infrared laser irradiation to fabricate superhydrophobic surfaces on Al alloy surfaces. Laser processing parameters were changed to find out the optimal settings in order to fabricate a stable superhydrophobic surface on aluminum alloy. With the low scanning speed and the high laser power, the roughness of microstructure gradually became larger. This study provides a facile method of fabricating superhydrophobic surfaces on Al alloy materials which enhances the application field of research and industry
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