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Tunable Hierarchical Nanostructures on Micro-Conical Arrays of Laser Textured TC4 Substrate by Hydrothermal Treatment for Enhanced Anti-Icing Property
Coatings ( IF 2.9 ) Pub Date : 2020-05-06 , DOI: 10.3390/coatings10050450
Mengyao Liu , Rui Zhou , Zhekun Chen , Huangping Yan , Jingqin Cui , Wanshan Liu , Jia Hong Pan , Minghui Hong

In this work, an anti-icing structured surface was fabricated by combining laser ablation with hydrothermal treatment. A micro-patterned surface on a Ti alloy (TC4) substrate was easily fabricated by a highly effective nanosecond pulsed laser ablation. It was observed that titania (TiO2) nanostructures were formed by hydrothermal treatment in aqueous alkali on the laser ablated TC4 substrate to obtain the micro/nano-hierarchical structures. The growth mechanism of the tunable nanoarrays was discussed by the adjustment of hydrothermal temperature. The as-prepared samples exhibited excellent superhydrophobicity with contact angles greater than 160°. It was found that optimized hydrothermal treatment on laser-processed TC4 substrates could further enhance surface anti-icing property. The results showed that the delay time (DT) had been extended by achieving over 90 min for the water droplets to freeze on the as-prepared structured surfaces, providing great potential in various anti-icing applications.

中文翻译:

激光织构TC4基板的微圆锥阵列上通过水热处理可调谐的分层纳米结构,以增强防冰性能

在这项工作中,通过将激光烧蚀与水热处理相结合来制造防冰结构化表面。通过高效的纳秒脉冲激光烧蚀,可以轻松在Ti合金(TC4)基板上制作出微图案表面。观察到二氧化钛(TiO 2通过在碱金属水溶液中进行水热处理在激光烧蚀的TC4基板上形成纳米结构,以获得微/纳米层级结构。通过调节水热温度讨论了可调纳米阵列的生长机理。所制备的样品表现出优异的超疏水性,接触角大于160°。发现在激光处理的TC4基板上进行优化的水热处理可以进一步增强表面防冰性能。结果表明,通过使水滴冻结在准备好的结构化表面上超过90分钟,可以延长延迟时间(DT),从而为各种防冰应用提供了巨大的潜力。
更新日期:2020-05-06
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