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<p>Titanium alloy exhibits high specific strength and excellent stability, making it extensively utilized in industrial production. The wettability modification of titanium alloy surface can broaden its application range and enhance the adaptability under harsh service conditions. In this paper, an environmentally friendly, simple and low-cost processing method for preparing multifunctional superhydrophobic titanium alloy surface by nanosecond laser is proposed. The surface is fabricated by one-pass scan of nanosecond laser without subsequent processing and has multilevel hierarchical micro-nanostructures. In this work, the effects of different scanning speeds and laser power on the microstructure morphologies, wettability, anti-icing and anti-reflection properties were studied. The results show that laser-processed surface at 300&#xa0;mW and 5&#xa0;mm/s exhibited optimal multifunctionality with a large water contact angle of 163.3°, anti-icing delay time of 150&#xa0;s at − 5&#xa0;°C (450% longer than untreated surface) and optical reflectivity below 10% in the 200-1000&#xa0;nm spectral range. The method reported here can provide a strategy for the improvement of the performance of titanium alloy materials in aerospace, vehicle manufacturing and other industry fields.</p>

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A Multilevel-Structured Multifunctional Superhydrophobic Surface Prepared by Nanosecond Laser

  • 期刊论文

  • 发表日期：

    2025年9月2日

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  • Bingyang Yuan,
  • Jiale Zhang,
  • Weijie Yu,
  • Juan Song,
  • Ye Dai

摘要

Titanium alloy exhibits high specific strength and excellent stability, making it extensively utilized in industrial production. The wettability modification of titanium alloy surface can broaden its application range and enhance the adaptability under harsh service conditions. In this paper, an environmentally friendly, simple and low-cost processing method for preparing multifunctional superhydrophobic titanium alloy surface by nanosecond laser is proposed. The surface is fabricated by one-pass scan of nanosecond laser without subsequent processing and has multilevel hierarchical micro-nanostructures. In this work, the effects of different scanning speeds and laser power on the microstructure morphologies, wettability, anti-icing and anti-reflection properties were studied. The results show that laser-processed surface at 300 mW and 5 mm/s exhibited optimal multifunctionality with a large water contact angle of 163.3°, anti-icing delay time of 150 s at − 5 °C (450% longer than untreated surface) and optical reflectivity below 10% in the 200-1000 nm spectral range. The method reported here can provide a strategy for the improvement of the performance of titanium alloy materials in aerospace, vehicle manufacturing and other industry fields.