The effect of superhydrophobic surface topography on underwater corrosion resistance of steel / Keqin Zheng in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 3 (05/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 3 (05/2021) . - p. 685-693 Titre : The effect of superhydrophobic surface topography on underwater corrosion resistance of steel Type de document : texte imprimé Auteurs : Keqin Zheng, Auteur ; Jinde Zhang, Auteur ; Erin Keaney, Auteur ; Hanna Dodiuk, Auteur ; Samuel Kenig, Auteur ; Carol Barry, Auteur ; Joey Mead, Auteur Année de publication : 2021 Article en page(s) : p. 685-693 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique. L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1. C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple. Anticorrosifs Anticorrosion Epoxydes Hydrophobie Matériaux hybrides Métaux -- Revêtements protecteurs Revêtements organiques Surfaces (Physique) Topographie Index. décimale : 667.9 Revêtements et enduits Résumé : This article describes the study of the topography effect of superhydrophobic surfaces on the corrosion protection performance of steel through the air plastron behavior when subjected to an underwater environment. A random superhydrophobic surface was fabricated using spray coating and characterized for morphology and wettability by scanning electron microscopy (SEM) and goniometer measurements, respectively. By comparing the coated surfaces both with and without air plastron, it was found that superhydrophobicity postponed the corrosion of the coated steel specimens. This increase in corrosion protection of the superhydrophobic surface was due to the air plastron created by the superhydrophobicity in underwater immersion. Since different areas showed differing air plastron lifetimes (wetting behavior), it was assumed that the underlying topography of the superhydrophobic coating controlled the air plastron lifetime. To investigate this behavior, the micron scale topography of the different areas was studied using the technique of laser confocal microscopy over the specific areas and correlating with air plastron lifetime. Using the theoretical analysis based on superhydrophobic robustness and assuming the solid fraction is the same for different locations, it was demonstrated that the feature size [extracted by roughness analysis as root-mean-square (RMS)] correlated with the air plastron lifetime. It was confirmed from the plot of RMS and air plastron lifetime that smaller feature sizes could extend the air plastron lifetime and provide better anticorrosion performance. Note de contenu : - EXPERIMENTAL : Materials - Pretreatment of steel substrate - Preparation of superhydrophobic coating - Wettability characterization - Air plastron real-time observation - Corrosion resistance evaluation - Topography characterization - RESULTS AND DISCUSSION : Plastron real-time observation - Corrosion resistance of superhydrophobic coatings - The effect of topography on air plastron lifetime DOI : https://doi.org/10.1007/s11998-020-00433-1 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00433-1.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35922 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
22785	-	Périodique	Bibliothèque principale	Documentaires	Disponible

The reduction in ice adhesion using controlled topography superhydrophobic coatings / Yujie Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 2 (03/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 2 (03/2023) . - p. 469-483 Titre : The reduction in ice adhesion using controlled topography superhydrophobic coatings Type de document : texte imprimé Auteurs : Yujie Wang, Auteur ; Jinde Zhang, Auteur ; Hanna Dodiuk, Auteur ; Samuel Kenig, Auteur ; Jo Ann Ratto, Auteur ; Carol Barry, Auteur ; Joey Mead, Auteur Année de publication : 2023 Article en page(s) : p. 469-483 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion Caractérisation Epoxydes Fluoroalkylsilane Hydrophobie Interfaces solide-liquide Liants Mouillage (chimie des surfaces) Nanoparticules Revêtements organiques Silice La silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux. La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...). Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale. Topographie Index. décimale : 667.9 Revêtements et enduits Résumé : Since ice formation on surfaces at subzero temperatures leads to accidents, increased equipment maintenance costs, and reduced performance, multiple strategies, including superhydrophobic surfaces and coatings, have been explored as means to reduce ice adhesion to solid surfaces. Previous work has correlated the effect of topography of regularly patterned superhydrophobic surfaces with ice adhesion. This work, however, investigated the effect of filtered topography on ice adhesion for random superhydrophobic surfaces. The ice adhesion behavior of superhydrophobic composite coatings, prepared from a mixture of silica nanoparticles and polymer binder and sprayed on glass slides, was determined using a shear strength measurement. The ice adhesion significantly decreased with an increase in particle content up to 40 wt.%, after which the ice adhesion became nearly constant. The present study focuses on the use of a novel filtering method for coating topography evaluation which isolated the asperities contributing to the interface from the roughness profile in the superhydrophobic coating. It showed that the ice adhesion correlated with the filtered asperity height and spacing for these random hydrophobic surfaces. Higher particle contents led to larger asperity distances, smaller solid fractions, and lower ice adhesion. The results and conclusions are based on a static ice adhesion test using still water. In this work, it is demonstrated that ice adhesion can be predicted based on the solid–water–air interface, a correlation that could guide future superhydrophobic coating fabrication to create surfaces with greater reduction in ice adhesion. Note de contenu : - Materials - Preparation of SHP coatings - Surface wetting characterization - Visualization of solid-water interface - Ice shear adhesion strength measurement - Topography characterization - Table 1 : Composition of SHP coatings with different particle contents - Table 2 : Measured topographical parameters of defined asperities and particle content - Table 3 : Definition of design parameters in this work - Table 4 : Design parameters for the SHP surfaces DOI : https://doi.org/10.1007/s11998-022-00682-2 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00682-2.pdf?pdf=button% [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39292 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
24056	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 2 / 2)