Abstract
The development of a self-cleaning and corrosion resistant superhydrophobic coating for aluminum alloy surfaces that is durable in aggressive conditions has attracted great interest in materials science. In the present study, a superphydrophobic film was fabricated on an AA5052 aluminum alloy surface by the electrodeposition of Ni–Co alloy coating, followed by modification with 6-(N-allyl-1,1,2,2-tetrahydro-perfluorodecyl) amino-1,3,5-triazine-2,4-dithiol monosodium (AF17N). The surface morphology and characteristics of the composite coatings were investigated by means of scanning electron microscopy (SEM), energy dispersive X-ray spectrum (EDS), atomic force microscope (AFM) and contact angle (CA). The corrosion resistance of the coatings was assessed by electrochemical tests. The results showed that the surface exhibited excellent superhydrophobicity and self-cleaning performance with a contact angle maintained at 160° after exposed to the atmosphere for 240 days. Moreover, the superhydrophobic coatings significantly improved the corrosion resistant performance of AA5052 aluminum alloy substrate in 3.5 wt.% NaCl solution.
Highlights
Aluminum and its alloys have widespread engineering applications owing to their high strength-to-density ratio, ductility, low weight and formability [1,2].The wrought aluminum-zinc-magnesium-copper series alloys have been largely employed for production of the AA5052 chemical equipment, pressure vessels, food packaging, fan blades, coding utilities, automotive parts, etc. [3,4]
We reported a simple and efficient process for the construction superhydrophobic surface on an AA5052 aluminum alloy, wherein Ni–Co platings were electrodeposited of a superhydrophobic surface on an AA5052 aluminum alloy, wherein Ni–Co platings were on the pretreated AA5052 substrate surface to first form hierarchical micro/nano structures, which electrodeposited on the pretreated AA5052 substrate surface to first form hierarchical micro/nano was modified using an environmentally-friendly long-chain triazinedithiol compound (AF17N)
The surface wettability of the as-obtained superhydrophobic surface was studied by contact angle (CA) and sliding angle (SA) measurements
Summary
Aluminum and its alloys have widespread engineering applications owing to their high strength-to-density ratio, ductility, low weight and formability [1,2]. Because the potential of aluminum alloys are more negative compared to other conventional metals, they are highly susceptible to corrosion, especially in moist environments, and undergo more rapid deterioration due to localized corrosion than their homogeneous counterparts This has seriously limited their widespread applications [5]. We reported a simple and efficient process for the construction superhydrophobic surface on an AA5052 aluminum alloy, wherein Ni–Co platings were electrodeposited of a superhydrophobic surface on an AA5052 aluminum alloy, wherein Ni–Co platings were on the pretreated AA5052 substrate surface to first form hierarchical micro/nano structures, which electrodeposited on the pretreated AA5052 substrate surface to first form hierarchical micro/nano was modified using an environmentally-friendly long-chain triazinedithiol compound (AF17N). Characteristics and anticorrosion behavior of the obtained surface was investigated
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
