• SAMAN HOSSEINPOUR

Articles written in Bulletin of Materials Science

• Fabrication of micro–nano-roughened surface with superhydrophobic character on an aluminium alloy surface by a facile chemical etching process

In the present work, we have fabricated a superhydrophobic surface on aluminium alloy 2024 through a simpleimmersion chemical etching method in hydrochloric acid followed by a functionalization step in stearic acid solution. Theimpact of etching time on water contact angle was investigated and a contact angle of $\sim$167$^{\circ}$ was reached on the superhydrophobic surface, which was etched for 4 min. Morphology of the surface was evaluated by scanning electron microscopy and the surface chemical analysis was performed by energy-dispersive X-ray spectroscopy and Raman spectroscopy. We show that the fabricated superhydrophobic samples can besides water, also repel other liquids.We also demonstrate the selfcleaning properties of the fabricated samples using graphite particles as contaminants. Ultimately, we assessed the corrosionresistance properties of the fabricated surfaces by the potentiodynamic polarization method. The superhydrophobic surface exhibited increased corrosion potential and polarization resistance along with reduced corrosion current density, all of which are indicative of a significant improvement in corrosion performance of the superhydrophobic surface in comparison withtypical aluminium 2024. The cheap and facile superhydrophobic surface fabrication method presented in this study can beapplied to large scale samples with no need for electricity or expensive raw materials.

• # Bulletin of Materials Science

Volume 45, 2022
All articles
Continuous Article Publishing mode

• # Dr Shanti Swarup Bhatnagar for Science and Technology

Posted on October 12, 2020

Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020