Robust icephobic coating based on the spiky fluorinated Al2O3 particles

Omniphobic and icephobic twin-scale surfaces based on the “urchin”-like fluorinated Al 2 O 3 particles are presented. Combined effect of hierarchical topography and fluorination supplied to the surfaces omniphobic and icephobic properties. The study of the stability of the Cassie wetting state is re...

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Bibliographic Details
Published in:Scientific reports 2021-03, Vol.11 (1), p.5394-5394, Article 5394
Main Authors: Starostin, Anton, Strelnikov, Vladimir, Valtsifer, Viktor, Lebedeva, Irina, Legchenkova, Irina, Bormashenko, Edward
Format: Article
Language:English
Subjects:
639/301/357/551
639/766
639/766/94
Aluminum
Aluminum oxide
Contact angle
Crystallization
Freezing
Humanities and Social Sciences
Ice formation
multidisciplinary
Qualitative analysis
Science
Science (multidisciplinary)
Thawing
Turbines
Water analysis
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Summary:Omniphobic and icephobic twin-scale surfaces based on the “urchin”-like fluorinated Al 2 O 3 particles are presented. Combined effect of hierarchical topography and fluorination supplied to the surfaces omniphobic and icephobic properties. The study of the stability of the Cassie wetting state is reported. High apparent contact angles were accompanied with the low contact angle hysteresis and high stability of the Cassie air trapping wetting state. Time delay of the ice crystallization as high as 88 ± 5  min was established when compared to the ice formation on flat aluminum and non-fluorinated “urchin”-like surfaces. Crystallized water droplets formed on the reported nano-structured surfaces were easily blown out by the air jet with the velocity of v = 3.0 ± 1.0  m/s, (which is markedly lower than that common for exploitation of aircrafts and turbines). Heated “urchin”-like surfaces completely restored their omniphobic and icephobic surfaces after thawing. Qualitative analysis of water freezing is supplied.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-84283-w