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Bionic Microstructure/Nanofiller Heterogeneous Ultradurable Superhydrophobic Surface Based on Metal Additive
Zhenglei Yu1,2, Binkai Guo2, Pengwei Sha2
1National Key Laboratory of Automotive Chassis Integration and Bionics, Jilin University, Changchun 130025, China.
Nano Letters
|April 29, 2025
Summary
This study introduces a durable, multifunctional superhydrophobic surface for titanium alloys using laser powder bed fusion and sol-gel nanofillers. The novel biomimetic composite surface demonstrates excellent wear, corrosion, and anti-icing properties, even on complex shapes.
Area of Science:
- Materials Science
- Surface Engineering
- Nanotechnology
Background:
- Metallic superhydrophobic surfaces face challenges in durability, functionality, and application to complex geometries.
- Existing methods often struggle to achieve robust and versatile superhydrophobic properties on metal substrates.
Purpose of the Study:
- To develop a novel, durable, and multifunctional superhydrophobic surface for metallic materials.
- To address the limitations of current superhydrophobic surface technologies.
Main Methods:
- Utilized laser powder bed fusion (LPBF) to create biomimetic microstructures on Ti6Al4V surfaces.
- Incorporated functional nanofillers synthesized via sol-gel method as a secondary interpenetrating phase.
- Formed a biomimetic heterogeneous superhydrophobic surface (BHS) through a surface biomimetic interpenetrating phase composites (S-BIPC) strategy.
Main Results:
- The BHS demonstrated exceptional durability, retaining superhydrophobicity after 5000 abrasion cycles and 200% compressive strain.
- Exhibited self-cleaning, wear resistance, corrosion resistance, and anti-icing capabilities.
- Successfully applied to complex curved structures.
Conclusions:
- The S-BIPC strategy offers a promising approach for creating highly durable and functional metallic superhydrophobic surfaces.
- This method overcomes limitations of previous technologies, enabling applications on complex geometries.
- The developed BHS represents a significant advancement in superhydrophobic surface technology.
