| ZHAO Xin,HUANG Cheng-chao,LI Meng,YANG Hua-rong,ZHAO Hao-dong.Fabrication and Properties of Micro-nano Superhydrophobic Titanium Alloy Surface[J],52(3):360-369 |
| Fabrication and Properties of Micro-nano Superhydrophobic Titanium Alloy Surface |
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| DOI：10.16490/j.cnki.issn.1001-3660.2023.03.034 |
| KeyWord:laser technology femtosecond laser superhydrophobic surface micro-nano composite structure low adhesion self-cleaning |
| Author | Institution |
| ZHAO Xin |
College of Aeronautical Engineering, Civil Aviation Flight University of China, Sichuan Guanghan , China |
| HUANG Cheng-chao |
College of Aeronautical Engineering, Civil Aviation Flight University of China, Sichuan Guanghan , China |
| LI Meng |
College of Aeronautical Engineering, Civil Aviation Flight University of China, Sichuan Guanghan , China |
| YANG Hua-rong |
College of Aeronautical Engineering, Civil Aviation Flight University of China, Sichuan Guanghan , China |
| ZHAO Hao-dong |
College of Aeronautical Engineering, Civil Aviation Flight University of China, Sichuan Guanghan , China |
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| Abstract: |
| Superhydrophobic surfaces have attracted great attention from researchers in China and abroad due to their low adhesion, self-cleaning, anti-corrosion, drag reduction, and good anti-icing properties. The work aims to adopt a novel femtosecond laser composite dealloying method to prepare superhydrophobic self-cleaning Ti6Al4V alloy surfaces. Firstly, 800# sandpaper was used for grinding, and after ultrasonic cleaning and drying, the micron-scale structure was pre-prepared on the surface of Ti6Al4V alloy via femtosecond laser in a 90° vertical cross-scanning manner. The laser processing parameters were as follows:laser fluence 0.30 J/cm2, repetition frequency 200 kHz, scanning speed 200 mm/s, scanning spacing 20 μm, and 6 times of repetition. Then, the pre-prepared surface samples were placed in 1.0 mol/L sodium hydroxide solution, the appropriate voltage was selected, and electrochemical dealloying was carried out in the state of ultrasonic water bath at temperature of 40 ℃ for 5 h to prepare the micro-nano composite structure. Next, the surface of the de-alloyed sample was modified with fluoroalkyl silanes and stored at 100 ℃ for 30 min in a vacuum incubator to obtain a micro-nano superhydrophobic titanium alloy surface. |
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