Laser direct writing micro/nano hierarchical honeycomb surface structures for robust superhydrophobic titanium alloys

Superhydrophobic surfaces show exceptional promise for aerospace anti-icing applications but suffer from poor abrasion resistance in harsh environments. To overcome this limitation, we engineer a hierarchically protected surface on Ti-6Al-4 V (TC4) alloy through femtosecond (fs) laser micromachining. Our design features honeycomb-armored microstructures shielding fragile superhydrophobic nanostructures, and nickel chromium aluminum yttrium (NiCrAlY) / yttria-stabilized zirconia (YSZ) protective coatings enhancing armor durability. The optimized surface achieves extreme wettability with a contact angle (CA) of 162 ± 1.7° and a sliding angle (SA) of 3.8 ± 0.3°. Even after 300 cm of wear on sandpaper, CA remains at 152°. The surface also demonstrates exceptional resilience under extreme conditions, including 168-h UV radiation, 168-h chemical exposure, continuous water/sand impact, and simulated weathering cycles. This hierarchical protection strategy provides a transformative approach for developing mechanically robust superhydrophobic surfaces in practical aerospace systems.

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成果名称:低表面能涂层

合作方式:技术开发

联 系 人:周老师

联系电话:13321314106

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成果名称:低表面能涂层

合作方式:技术开发

联 系 人:周老师

联系电话:13321314106

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成果名称:低表面能涂层

合作方式:技术开发

联 系 人:周老师

联系电话:13321314106

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成果名称:低表面能涂层

合作方式:技术开发

联 系 人:周老师

联系电话:13321314106

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