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Title: When superhydrophobic coatings are icephobic : role of surface topology
Authors: Chen, Zhong
Wu, Xinghua
Silberschmidt, Vadim V.
Hu, Zhong-Ting
Keywords: Engineering::Materials::Composite materials
Issue Date: 2018
Source: Wu, X., Silberschmidt, V. V., Hu, Z.-T., & Chen, Z. (2019). When superhydrophobic coatings are icephobic : role of surface topology. Surface and Coatings Technology, 358, 207-214. doi:10.1016/j.surfcoat.2018.11.039
Series/Report no.: Surface and Coatings Technology
Abstract: Among different types of anti-icing coatings, superhydrophobic coatings have attracted considerable attention due to their water repellency and low heat-transfer rate. However, condensation on superhydrophobic surfaces at low temperatures usually causes an increase in ice adhesion because of the induced wetting of micro- and nanostructures. By tuning the weight ratio of surface-modified nanoparticles to unmodified ones, five superhydrophobic coatings with different structural features at the microscale were developed. Ice-adhesion strength and ice-nucleation temperature were studied, together with the effect of moisture condensation on ice adhesion. It was found that the ice-adhesion strength and icing temperature of these coatings do not necessarily follow the same order among these surfaces because of different mechanisms involved. Surface roughness is inadequate to describe the necessary surface features that critically affect the anti-icing behavior of the coatings. Detailed topology/geometry has to be considered when designing icephobic coatings. Superhydrophobic coatings can be adopted for icephobic applications once the surface topology is carefully designed.
ISSN: 0257-8972
DOI: 10.1016/j.surfcoat.2018.11.039
Rights: © 2018 Elsevier B.V. All rights reserved. This paper was published in Surface and Coatings Technology and is made available with permission of Elsevier B.V.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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