by Lucia H. Prado, Samer Hayek, Anca Mazare, Ina Erceg, George Sarau, Silke Christiansen, Maksim Kamaleev, Michael Wurmshuber, Ulrich Lohbauer, Wolfgang H. Goldmann, Sannakaisa Virtanen, Alexander B. Tesler
Abstract:
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.
Reference:
Lucia H. Prado, Samer Hayek, Anca Mazare, Ina Erceg, George Sarau, Silke Christiansen, Maksim Kamaleev, Michael Wurmshuber, Ulrich Lohbauer, Wolfgang H. Goldmann, Sannakaisa Virtanen, Alexander B. TeslerAerophilic Surfaces for Sustained Corrosion Protection of Metals UnderwaterIn Advanced Functional Materials, 2024.
Bibtex Entry:
@article{prado_aerophilic_2024,
title = {Aerophilic {Surfaces} for {Sustained} {Corrosion} {Protection} of {Metals} {Underwater}},
issn = {1616-301X, 1616-3028},
url = {Prado 2024 Adv Funct Materials.pdf},
doi = {10.1002/adfm.202407444},
abstract = {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.},
language = {en},
urldate = {2024-08-02},
journal = {Advanced Functional Materials},
author = {Prado, Lucia H. and Hayek, Samer and Mazare, Anca and Erceg, Ina and Sarau, George and Christiansen, Silke and Kamaleev, Maksim and Wurmshuber, Michael and Lohbauer, Ulrich and Goldmann, Wolfgang H. and Virtanen, Sannakaisa and Tesler, Alexander B.},
month = aug,
year = {2024},
pages = {2407444},
}