| Bio-Inspired, Ultra-hydrophobic Natured Durable Thermal-
Sprayed Ytterbium-Oxide Coatings: Review and Perspectives |
Lakkimsetti Lakshmi Praveen, Karakavalasa Kailasam, Robbi Vivek Vardhan and Saumen
Mandal
Pages : 149-165
DOI : 10.1080/0371750X.2024.2353255 |
| Abstract |
| Ever since the discovery of ultra-hydrophobicity in lotus leaf, rigorous experiments
have been carried out to replicate and understand its wetting nature using ceramic
oxide based coatings on various substrates. Enormous applications dealing with
ultra-hydrophobic nature have been explored which led to the discovery of intrinsic
hydrophobic nature in rare-earth oxides. Several studies reported intrinsic hydrophobic
behavior exhibited by rare earth oxides. Among all rare earth oxides, ytterbium-oxide
(Yb2O3) has numerous applications in different fields because of its ability to phase
change with pressure, abrasion resistance, high hardness and melting point. This
review gives a basic understanding of wettability studies carried out on Yb2O3 coating
via the solution precursor plasma spray (SPPS) technique outlined in the literature
and aims to understand the mechanism of post-processing treatments, revealing the
conditions affecting the reversible wettability. Additionally, the mechanical durability
tests performed on thermal-sprayed Yb2O3 coatings are summarized along with the
cost-effective approach of SPPS technique over other plasma spray techniques. The
ultra-hydrophobicity in Yb2O3 coatings and its existing applications propels the
development of novel device-designing strategies in the field of bio-sensing and
oil-water separation.
[Keywords: Ytterbium oxide, Ultra-hydrophobic, Super-hydrophilic, Water contact
angle, Vacuum treatment, Plasma spray coating] |
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