The Effect of Roughness Geometry on Superhydrophobicity and Related Phenomena

Shirtcliffe, Neil; Comanns, Philipp; Hamlett, Christopher; Roach, Paul; Atherton, Shaun

doi:10.1016/b978-0-12-803581-8.10465-5

Cited by 5 publications

(3 citation statements)

References 78 publications

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“…With a decrease in the roughness of the bond coat, the spreading speed of the CMAS bulk on the coating surface decreases, and the spreading area decreases. This phenomenon is similar to the lotus effect [27,28], which (i-l) enlarged coating microstructural morphologies from the selected yellow frame areas of (a-d); (m-p) enlarged coating microstructural morphologies near the surface from the selected yellow frame areas of (a-d); (q-t) enlarged coating microstructural morphologies halfway through the thickness from the selected yellow frame areas of (a-d).…”

Section: Wetting Experimentssupporting

confidence: 57%

“…With a decrease in the roughness of the bond coat, the spreading speed of the CMAS bulk on the coating surface decreases, and the spreading area decreases. This phenomenon is similar to the lotus effect [27,28], which strongly indicates that the EB-PVD coating possesses enhanced resistance to the CMAS wetting behavior that could prevent the reaction between CMAS melt and the 7YSZ coating to a certain extent. The least rough bond coat possessed the finest EB-PVD columns, which can offer greater resistance to CMAS wetting by increasing the contact angle towards higher values and combining more feather arms to split the glass flow [29,30].…”

Section: Wetting Experimentssupporting

confidence: 54%

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The Effect of Bond Coat Roughness on the CMAS Hot Corrosion Resistance of EB-PVD Thermal Barrier Coatings

et al. 2022

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In a high-temperature, high-flame-velocity, and high-pressure gas corrosion environment, the intercolumnar pores and gaps of electron beam–physical vapor deposition (EB-PVD) thermal barrier coatings (TBCs) may serve as infiltration channels for molten calcium–magnesium–alumino–silicate (CMAS), leading to the severe degradation of TBCs. In order to clarify the relationship between the roughness of the bond coat and the CMAS corrosion resistance of the EB-PVD TBCs, 7 wt.% yttria-stabilized zirconia (7YSZ) TBCs were prepared on the surfaces of four different roughness-treated bond coats. The effect of the bond coat roughness on the columnar microstructure of the EB-PVD YSZ was investigated. The effect of the change of the bond coat’s microstructure on the CMAS corrosion resistance of the EB-PVD YSZ was studied in detail. The results showed that the reduction in the roughness of the bond coat contributes to the improved formation of the EB-PVD YSZ columns. The small and dense columns are similar to a lotus leaf-like structure, which could reduce the wettability of CMAS and minimize the spread area between the coating and the CMAS melt. Thus, the CMAS corrosion resistance of the coating can be greatly improved. This preparation process also provides a reference for the preparation of other TBC materials, improving the resistance to CMAS hot corrosion.

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Section: Wetting Experimentssupporting

confidence: 57%

“…With a decrease in the roughness of the bond coat, the spreading speed of the CMAS bulk on the coating surface decreases, and the spreading area decreases. This phenomenon is similar to the lotus effect [27,28], which strongly indicates that the EB-PVD coating possesses enhanced resistance to the CMAS wetting behavior that could prevent the reaction between CMAS melt and the 7YSZ coating to a certain extent. The least rough bond coat possessed the finest EB-PVD columns, which can offer greater resistance to CMAS wetting by increasing the contact angle towards higher values and combining more feather arms to split the glass flow [29,30].…”

Section: Wetting Experimentssupporting

confidence: 54%

The Effect of Bond Coat Roughness on the CMAS Hot Corrosion Resistance of EB-PVD Thermal Barrier Coatings

et al. 2022

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“…Although the structure is flat and tightly plaited, such behavior can be explained as the effect of high surface energy and surface chemical properties over the wettability. 33 As the PP-Knitted bags are glossy and shiny it can be understood that the extra surface coating reduces the water contact angle.…”

Section: Wettability and Barrier Propertiesmentioning

confidence: 99%

Neem oil encapsulated electrospun polyurethane nanofibrous bags for seed storage: A step toward sustainable agriculture

Gaydhane

Pudke

Sharma

2020

J of Applied Polymer Sci

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For higher crop yields, availability of good quality healthy seeds is a major challenge which is directly related to post-harvesting proper seed storage. Various reasons for significant seed storage losses includes varying temperature, humidity and presence of rodents, insects and microbial infestation. In this study, a new type of seed storage bag is produced using electrospun polyurethane (PU) nanofibers encapsulated with neem oil. The effect of neem oil loading (3, 5, and 10% w/v) on fiber morphology, wettability, and water vapor

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Correlating hydrophobicity to surface chemistry of microstructured aluminium surfaces

Savio

Bhavitha

Bracco

et al. 2021

Applied Surface Science

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The Effect of Roughness Geometry on Superhydrophobicity and Related Phenomena

Cited by 5 publications

References 78 publications

The Effect of Bond Coat Roughness on the CMAS Hot Corrosion Resistance of EB-PVD Thermal Barrier Coatings

The Effect of Bond Coat Roughness on the CMAS Hot Corrosion Resistance of EB-PVD Thermal Barrier Coatings

Neem oil encapsulated electrospun polyurethane nanofibrous bags for seed storage: A step toward sustainable agriculture

Correlating hydrophobicity to surface chemistry of microstructured aluminium surfaces

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