Functional superhydrophobic coating systems for possible corrosion mitigation

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Authors
Jurak, Sarah F.
Jurak, Emil
Uddin, M. Nizam
Asmatulu, Ramazan
Advisors
Issue Date
2020-03-05
Type
Article
Keywords
Corrosion , Functional micro-and nanomaterials , Mitigation , Superhydrophobic coatings
Research Projects
Organizational Units
Journal Issue
Citation
S. Jurak, E. Jurak, M. Uddin, and R. Asmatulu, “Functional Superhydrophobic Coating Systems for Possible Corrosion Mitigation,” Int. J. Automation Technol., Vol.14, No.2, pp. 148-158, 2020
Abstract

Because of their repellent, corrosion-mitigating, anti-icing, and self-cleaning properties, superhydrophobic coatings have numerous applications from windshields to textiles. A superhydrophobic coating is defined as one having a water contact angle (WCA) greater than 150◦ with a surface sliding angle less than 10◦, and very low hysteresis between the advancing and receding angles. Its surface exhibits the so-called “lotus leaf effect,” whereby water bounces and balls up on contact. Here, water droplets run off readily, taking along dirt and dust for a self-cleaning effect that keeps the surface dry. The chemical composition of a surface affects the WCA, which can rise to 120◦, but to achieve a WCA greater than 150◦, which is considered superhydrophobic, an additional micro-and nanostruc-tural component is needed. This functional hierarchical micro-and nanomorphology is exhibited in nature by plants and insects. A superhydrophobic coating on metallic substrates promises to provide corrosion mitigation by blocking oxygen and electrolytes, which are needed for the initiation of corrosion at the surface and interface. The methods used for preparing functional superhydrophobic coatings include sol-gel processing, layer-by-layer assembly, etching, lithography, chemical and electrochemical depositions, chemical vapor deposition, electrospinning, hydrothermal synthesis, and one-pot reactions. In this work, some research studies conducted to develop robust and durable superhydrophobic coatings are discussed in detail and analyzed for possible corrosion mitigation on the surfaces of metals and alloys. Scientists, engineers, students, and other participants in automotive, aircraft, energy, defense, electronics, and other industries will benefit greatly from this work.

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Publisher
Fuji Technology Press
Journal
Book Title
Series
International Journal of Automation Technology;v.14:no.2
PubMed ID
DOI
ISSN
1881-7629
EISSN