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Superhydrophobic ceramic coating: Fabrication by solution precursor plasma spray and investigation of wetting behavior.
J Colloid Interface Sci. 2018 Aug 01; 523:35-44.JC

Abstract

HYPOTHESIS

Superhydrophobic surfaces are often created by fabricating suitable surface structures from low-surface-energy organic materials using processes that are not suitable for large-scale fabrication. Rare earth oxides (REO) exhibit hydrophobic behavior that is unusual among oxides. Solution precursor plasma spray (SPPS) deposition is a rapid, one-step process that can produce ceramic coatings with fine scale columnar structures. Manipulation of the structure of REO coatings through variation in deposition conditions may allow the wetting behavior to be controlled.

EXPERIMENTS

Yb2O3 coatings were fabricated via SPPS. Coating structure was investigated by scanning electron microscopy, digital optical microscopy, and x-ray diffraction. The static water contact angle and roll-off angle were measured, and the dynamic impact of water droplets on the coating surface recorded.

FINDINGS

Superhydrophobic behavior was observed; the best coating exhibited a water contact angle of ∼163°, a roll-off angle of ∼6°, and complete droplet rebound behavior. All coatings were crystalline Yb2O3, with a nano-scale roughness superimposed on a micron-scale columnar structure. The wetting behaviors of coatings deposited at different standoff distances were correlated with the coating microstructures and surface topographies. The self-cleaning, water flushing and water jetting tests were conducted and further demonstrated the excellent and durable hydrophobicity of the coatings.

Authors+Show Affiliations

Centre for Advanced Coating Technologies, University of Toronto, Toronto, Ontario M5S 3G8, Canada.Centre for Advanced Coating Technologies, University of Toronto, Toronto, Ontario M5S 3G8, Canada.Centre for Advanced Coating Technologies, University of Toronto, Toronto, Ontario M5S 3G8, Canada.Centre for Advanced Coating Technologies, University of Toronto, Toronto, Ontario M5S 3G8, Canada. Electronic address: mostag@mie.utoronto.ca.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29605739

Citation

Xu, Pengyun, et al. "Superhydrophobic Ceramic Coating: Fabrication By Solution Precursor Plasma Spray and Investigation of Wetting Behavior." Journal of Colloid and Interface Science, vol. 523, 2018, pp. 35-44.
Xu P, Coyle TW, Pershin L, et al. Superhydrophobic ceramic coating: Fabrication by solution precursor plasma spray and investigation of wetting behavior. J Colloid Interface Sci. 2018;523:35-44.
Xu, P., Coyle, T. W., Pershin, L., & Mostaghimi, J. (2018). Superhydrophobic ceramic coating: Fabrication by solution precursor plasma spray and investigation of wetting behavior. Journal of Colloid and Interface Science, 523, 35-44. https://doi.org/10.1016/j.jcis.2018.03.018
Xu P, et al. Superhydrophobic Ceramic Coating: Fabrication By Solution Precursor Plasma Spray and Investigation of Wetting Behavior. J Colloid Interface Sci. 2018 Aug 1;523:35-44. PubMed PMID: 29605739.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Superhydrophobic ceramic coating: Fabrication by solution precursor plasma spray and investigation of wetting behavior. AU - Xu,Pengyun, AU - Coyle,Thomas W, AU - Pershin,Larry, AU - Mostaghimi,Javad, Y1 - 2018/03/16/ PY - 2017/12/01/received PY - 2018/03/02/revised PY - 2018/03/06/accepted PY - 2018/4/2/pubmed PY - 2018/4/2/medline PY - 2018/4/2/entrez KW - Microstructures KW - Solution precursor plasma spray KW - Superhydrophobic ceramic coatings KW - Wetting behavior SP - 35 EP - 44 JF - Journal of colloid and interface science JO - J Colloid Interface Sci VL - 523 N2 - HYPOTHESIS: Superhydrophobic surfaces are often created by fabricating suitable surface structures from low-surface-energy organic materials using processes that are not suitable for large-scale fabrication. Rare earth oxides (REO) exhibit hydrophobic behavior that is unusual among oxides. Solution precursor plasma spray (SPPS) deposition is a rapid, one-step process that can produce ceramic coatings with fine scale columnar structures. Manipulation of the structure of REO coatings through variation in deposition conditions may allow the wetting behavior to be controlled. EXPERIMENTS: Yb2O3 coatings were fabricated via SPPS. Coating structure was investigated by scanning electron microscopy, digital optical microscopy, and x-ray diffraction. The static water contact angle and roll-off angle were measured, and the dynamic impact of water droplets on the coating surface recorded. FINDINGS: Superhydrophobic behavior was observed; the best coating exhibited a water contact angle of ∼163°, a roll-off angle of ∼6°, and complete droplet rebound behavior. All coatings were crystalline Yb2O3, with a nano-scale roughness superimposed on a micron-scale columnar structure. The wetting behaviors of coatings deposited at different standoff distances were correlated with the coating microstructures and surface topographies. The self-cleaning, water flushing and water jetting tests were conducted and further demonstrated the excellent and durable hydrophobicity of the coatings. SN - 1095-7103 UR - https://www.unboundmedicine.com/medline/citation/29605739/Superhydrophobic_ceramic_coating:_Fabrication_by_solution_precursor_plasma_spray_and_investigation_of_wetting_behavior_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9797(18)30259-5 DB - PRIME DP - Unbound Medicine ER -
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