Superhydrophobic Coating on 6061 Aluminum Alloy Fabricated by Femtosecond Laser Etching and Anodic Oxidation
Source abstract
Abstract
A superhydrophobic surface with hierarchical micro/nano-array structures was successfully fabricated on 6061 aluminum alloy through a combination of femtosecond laser etching and anodic oxidation. Femtosecond laser etching formed a regularly arranged microscale “pit-protrusion” array on the aluminum alloy surface. After modification with a fluorosilane ethanol solution, the surface exhibited superhydrophobicity with a contact angle of 154°. Subsequently, the anodic oxidation process formed an anodic oxide film dominated by an array of aluminum oxide (Al2O3) nanopores at the submicron scale. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analyses revealed that the nanopore structures uniformly and continuously covered the laser-ablated layer. This hierarchical structure significantly increased the surface water contact angle to 162°. Wettability analysis showed that the prepared composite coating formed an air layer accounting for 91% of the surface area. Compared with the sample only treated by femtosecond laser etching, the presence of the Al2O3 nanopore structure significantly enhanced the mechanical durability, superhydrophobic durability, and corrosion resistance of the superhydrophobic surface. The proposed multi-step fabrication strategy offers an innovative method for creating multifunctional, durable superhydrophobic coatings and has important implications for their large-scale industrial use.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Surface Modification and Superhydrophobicity · Adhesion, Friction, and Surface Interactions · High-Temperature Coating Behaviors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
Funding
Jiangsu Provincial Outstanding Overseas Talent Project · Jiangsu Provincial Natural Science Fund Research Project · Jiangsu Provincial Postgraduate Research & Practice Innovation Program
References (46)
Show source-provided references
1. Status and development trends for fluorinated carbon in China10.1016/S1872-5805(23)60716-4 ↗
2. Superhydrophobic conductive rubber band with synergistic dual conductive layer for wide-range sensitive strain sensor10.1016/j.scib.2022.07.020 ↗
3. Femtosecond laser-chemical hybrid processing for achieving substrate-independent superhydrophobic surfaces10.1007/s11771-023-5527-x ↗
4. Durable Superhydrophobic Surfaces: Theoretical Models, Preparation Strategies, and Evaluation Methods
5. Preparation and Application of Functional Polymer-Based Electromagnetic Shielding Materials
6. Robust and durable liquid-repellent surfaces10.1039/D0CS01033B ↗
7. Recent Advances in durability of superhydrophobic self-cleaning technology: A critical review10.1016/j.porgcoat.2019.105381 ↗
8. A review on fundamentals, constraints and fabrication techniques of superhydrophobic coatings10.1016/j.porgcoat.2020.105557 ↗
9. Recent progress in the preparation, properties and applications of superhydrophobic nano-based coatings and surfaces: A review10.1016/j.porgcoat.2019.03.042 ↗
10. Biofriendly vegetable oil healing agents used for developing self-healing coatings: A review10.1016/j.porgcoat.2019.01.012 ↗
11. Preparation of transparent and robust superhydrophobic surfaces for self-cleaning applications10.1016/j.porgcoat.2018.05.018 ↗
12. Recent developments in air-trapped superhydrophobic and liquid-infused slippery surfaces for anti-icing application10.1016/j.porgcoat.2019.105373 ↗
13. Fabrication of Superamphiphobic Surfaces via Spray Coating: A Review10.1002/admt.202101702 ↗
14. Wang, Y., Chen, J., Yang, Y., Liu, Z., Wang, H., and He, Z. (2022). Nanostructured Superhydrophobic Titanium-Based Materials: A Novel Preparation Pathway to Attain Superhydrophobicity on TC4 Alloy. Nanomaterials, 12.10.3390/nano12122086 ↗
15. Three-Dimensional Inverse Opal TiO2 Coatings to Enable the Gliding of Viscous Oils10.1021/acs.energyfuels.0c02031 ↗
16. Spontaneous dewetting transitions of droplets during icing & melting cycle
17. Enhanced corrosion resistance and self-cleaning properties of superhydrophobic nickel coating fabricated by one-step electrodeposition10.1016/j.ceramint.2022.12.188 ↗
18. AAO-ZnO nanocomposite coatings on aluminum alloy surface with high bonding strength and long-lasting antibacterial properties10.1016/j.cej.2024.154414 ↗
19. Impact of cooling rate on exfoliation corrosion resistance of a Li-containing 7xxx aluminum alloy10.1007/s11771-024-5702-8 ↗
20. Effect of Roughness and Intermetallic Particles on Surface Corrosion of A6111 Alloy
21. Energy Spectrum Scan Analysis of 7475 Aluminum Alloy Surface-Interface by Micro-arc Oxidation
22. Liu, S., Chen, J., Zhang, D., Wang, Y., He, Z., and Guo, P. (2022). Properties of Micro-Arc Oxidation Coatings on 5052 Al Alloy Sealed by SiO2 Nanoparticles. Coatings, 12.10.3390/coatings12030373 ↗
23. Preparation and characterisation of AAO/Ni/Ni superhydrophobic coatings on aluminium alloys10.1080/02670844.2021.1902110 ↗
24. Superhydrophobic Ni nanocone surface prepared by electrodeposition and its overall performance10.1016/j.surfcoat.2023.129548 ↗
25. How voltage dictates anodic TiO2 formation10.1016/j.scriptamat.2014.09.011 ↗
26. Preparation of Al/SiC Composite Coatings on Surface of Aluminum Alloy by Atmospheric Plasma Spraying10.1016/S1875-5372(16)30028-5 ↗
27. Spray-on omniphobic ZnO coatings10.1039/C5RA11178A ↗
28. Tong, Q., Fan, Z., Wang, B., Liu, Q., Bo, Y., and Qian, L. (2021). Preparation and Application of Superhydrophobic Copper Mesh by Chemical Etching and In-situ Growth. Front. Chem., 9.10.3389/fchem.2021.737550 ↗
29. Direct laser texturing technique for metal surfaces to achieve superhydrophobicity10.1016/j.mtphys.2022.100651 ↗
30. Anti-corrosion superhydrophobic surfaces of Al alloy based on micro-protrusion array structure fabricated by laser direct writing10.1016/j.jallcom.2021.160649 ↗
31. Electroless Ni–P alloys on nanoporous ATO surface of Ti substrate10.1007/s10853-017-1686-1 ↗
32. Robust superhydrophobic composite coating with dual-sized particles for self-cleaning and anti-corrosion of 5083 aluminum alloy10.1016/j.colsurfa.2024.136020 ↗
33. Enhancing corrosion resistance of anodized AA7075 alloys by electrodeposition of superhydrophobic coatings10.1016/j.colsurfa.2023.132040 ↗
34. Theoretical, fundamental and experimental study of Liquid-repellency and corrosion resistance of fabricated superamphiphobic surface on Al alloy 202410.1016/j.cej.2020.124046 ↗
35. General Strategy toward Dual-Scale-Controlled Metallic Micro–Nano Hybrid Structures with Ultralow Reflectance10.1021/acsnano.7b03673 ↗
36. Effects of Superhydrophobic Surface on Tribological Properties: Mechanism, Status and Prospects
37. Nanostructured antibacterial surfaces—What can be achieved?10.1016/j.nantod.2022.101404 ↗
38. Research and Development of Functional Superhydrophobic Materials
39. Wang, B., An, W., Wang, L., Jiao, L., Zhang, H., Song, H., and Liu, S. (2022). Superhydrophobic and Antibacterial Hierarchical Surface Fabricated by Femtosecond Laser. Sustainability, 14.10.3390/su141912412 ↗
40. Design of robust superhydrophobic surfaces10.1038/s41586-020-2331-8 ↗
41. Progress in superhydrophobic surfaces
42. Fabrication of superhydrophobic surface on stainless steel by two-step chemical etching10.1016/j.cplett.2022.139567 ↗
43. Low-cost superhydrophobic coating on aluminum alloy with self-cleaning and repellency to water-based mixed liquids for anti-corrosive applications10.1016/j.surfcoat.2023.129293 ↗
44. A durable, fluorine-free, and repairable superhydrophobic aluminum surface with hierarchical micro/nanostructures and its application for continuous oil-water separation10.1016/j.memsci.2020.118716 ↗
45. Robust and durable superhydrophobic coating prepared via a combined method of laser marking and electrodeposition10.1016/j.jmrt.2023.07.085 ↗
46. Wettability of porous surfaces10.1039/tf9444000546 ↗