| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering VII
|
| Presentation Title |
Micro-textured Slippery Aluminium Alloys for Marine Applications |
| Author(s) |
Nishkarsh Srivastava, Aaqib Khan, Rakesh Choubey, Sriharitha Rowthu |
| On-Site Speaker (Planned) |
Nishkarsh Srivastava |
| Abstract Scope |
Aluminium Alloy (AA) 5083 is ideal for marine environments but susceptible to intergranular and pitting corrosion due to its hydrophilicity. In this study, hydrophobic AA 5083 surfaces were created by preparing (a) ground, (b) polished, and (c) hot embossed micro-textured specimens, then spin-coated with high-viscosity silicone oil (1000–100000 cSt) producing slippery liquid-coated surfaces. Both the ground and polished surfaces exhibited non-wetting behaviour toward the water, with an apparent static water contact angle ranging from 94±1° to 104±1° for all specimens. The slide-off angle and contact angle hysteresis increased with the viscosity of the coated oil. Additionally, water droplets bounced off the ground and polished surfaces coated with higher oil viscosities. Micro-textured surfaces showed improved resistance to oil shear drainage under stagnant and flowing salt water conditions compared to untextured surfaces. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Surface Modification and Coatings, Other |