Fabrication of self-healing super-hydrophobic surfaces on aluminium alloy substrates

We present a method to fabricate a super-hydrophobic surface with a self-healing ability on an aluminium alloy substrate. The coatings are obtained by combining a two-step process (first, the substrate is immersed in a solution of HCl, HF and H2O, and then in boiling water) and succeeding surface fl...

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Bibliographic Details
Published in:AIP advances 2015-04, Vol.5 (4), p.041314-041314-6
Main Authors: Wang, Yang, Wei Liu, Xiao, Zhang, Hai Feng, Zhou, Zhi Ping
Format: Article
Language:English
Subjects:
ALUMINIUM
ALUMINIUM ALLOYS
Aluminum base alloys
CHEMICAL COMPOSITION
Contact angle
ELECTRON SCANNING
Energy dispersive X ray spectroscopy
FLUORINATED ALIPHATIC HYDROCARBONS
FLUORINATION
HEALING
Hydrophobic surfaces
MATERIALS SCIENCE
Organic chemistry
PARTICLES
POLYVINYLS
Self healing materials
SILANES
SOLUTIONS
Structural hierarchy
SUBSTRATES
SURFACES
Vinylidene
X ray spectra
X-RAY SPECTROSCOPY
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Summary:We present a method to fabricate a super-hydrophobic surface with a self-healing ability on an aluminium alloy substrate. The coatings are obtained by combining a two-step process (first, the substrate is immersed in a solution of HCl, HF and H2O, and then in boiling water) and succeeding surface fluorination with a solution of poly(vinylidene-fluoride-co-hexafluoropropylene) and a fluoroalkyl silane. The morphological features and chemical composition were studied by scanning electron micrometry and energy-dispersive X-ray spectroscopy. The prepared super-hydrophobic aluminium surfaces showed hierarchical structures forming pores, petals and particles with a contact angle of 161° and a sliding angle of 3°.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.4905741