Low Cost Synthesis of Hydrophobic Aluminum Alloy for Self-Cleaning Applications

Pat Sooksaen; Paradee Janmat; Wilaiwan Thovasakul; Onnuch Chulasinont

doi:10.4028/www.scientific.net/KEM.659.565

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 659Low Cost Synthesis of Hydrophobic Aluminum Alloy...

Low Cost Synthesis of Hydrophobic Aluminum Alloy for Self-Cleaning Applications

Abstract:

This research fabricated hydrophobic surfaces of aluminium alloy via electrochemical anodization and silane coating. The procedures consisted of electrochemical anodization in 1 and 1.5 M sulfuric acid using 12 volts dc. Anodization produced stable porous oxide layer on the surface. Aluminium alloy formed porous oxide structures with thickness in micrometer regime. The thickness of the porous layer was affected by the anodizing conditions such as electrolyte concentration and time. Dichloro methylsilane (5% in ethanol) was applied onto the porous surfaces by submerging the anodized surfaces into it for 10-60 min. After washing the treated surfaces with soap for many times, hydrophobic surfaces were obtained with some surfaces showed wetting angles greater than 100°. Water droplets of any sizes can roll off on these surfaces when tilted at angles above 10°. The treated aluminium surfaces can be applied for self-cleaning and anti-icing applications.

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Periodical:

Key Engineering Materials (Volume 659)

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565-569

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.659.565

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Online since:

August 2015

Authors:

Pat Sooksaen*, Paradee Janmat, Wilaiwan Thovasakul, Onnuch Chulasinont

Keywords:

Aluminium, Anodization, Hydrophobic, Microstructure, Silane

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