Aerophilic Surfaces for Sustained Corrosion Protection of Metals Underwater

Prado L, Hayek S, Mazare AV, Erceg I, Sarau G, Christiansen S, Kamaleev M, Wurmshuber M, Lohbauer U, Goldmann W, Virtanen S, Tesler A (2024)

Publication Language: English

Publication Type: Journal article

Publication year: 2024

Journal

Advanced Functional Materials Wiley-VCH Verlag

Article Number: 2407444

DOI: 10.1002/adfm.202407444

Abstract

Corrosion and biofouling are wetting-related phenomena that limit the effective use of metals in aqueous media. Nonwettable surfaces can mitigate the adverse effects of wetting by minimizing contact with water. However, current achievements in this field fall short of meeting industrial requirements due to the short lifetime of plastrons. This study proposes a method to measure the protective sustainability of plastron. Superhydrophobic (SHS) and aerophilic (APhS) surfaces are constructed on lightweight aluminum and are initially analyzed by conventional goniometry, which show comparable values. However, the plastron that develops underwater is substantially different. While SHS exhibit unevenly broken plastron, APhS show uniform, continuous plastron. As an example of the sustained protective performance of plastron, the corrosion resistance of SHS and APhS is presented. Potentiodynamic polarization, impedance spectroscopy, and long-term immersion in seawater show a drastic enhancement in corrosion resistance, exclusively for APhS. In fact, almost no electrochemical signals are measurable, and no pitting corrosion is observed after 415 days of immersion in seawater. Conversely, SHS show no noticeable improvement and corrode faster than bare Al due to plastron loss. Since goniometric measurements do not provide information on plastron, it is essential to analyze the plastron for any non-wettable surface utilized underwater.

Authors with CRIS profile

Lucia Prado Lehrstuhl für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) Anca Valentina Mazare Lehrstuhl für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) Maksim Kamaleev Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Michael Wurmshuber Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Ulrich Lohbauer Lehrstuhl für Zahn-,Mund- und Kieferheilkunde, insbesondere Zahnerhaltung, Parodontologie und Kinderzahnheilkunde Wolfgang Goldmann Lehrstuhl für Biophysik Sannakaisa Virtanen Professur für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) Alexander Tesler Lehrstuhl für Biophysik

Involved external institutions

Innovations-Institut für Nanotechnologie und korrelative Mikroskopie e.V. (INAM) / Institute for Nanotechnology and Correlative Microscopy DE Germany (DE)

How to cite

APA:

Prado, L., Hayek, S., Mazare, A.V., Erceg, I., Sarau, G., Christiansen, S.,... Tesler, A. (2024). Aerophilic Surfaces for Sustained Corrosion Protection of Metals Underwater. Advanced Functional Materials. https://doi.org/10.1002/adfm.202407444

MLA:

Prado, Lucia, et al. "Aerophilic Surfaces for Sustained Corrosion Protection of Metals Underwater." Advanced Functional Materials (2024).

BibTeX: Download