Comparison of the protective efficiency of polymethacrylates with different side chain length for AA2024 alloy

Muñoz, Lisa; Sancy, Mamié; Guerra, Carolina; Flores, Marcos; Molina, Paulo; Muñoz, Hugo; Bruna, Tamara; Arcos, Camila; Urzúa, Marcela; Encinas, M. V.; Páez, Maritza

doi:10.1016/j.jmrt.2021.11.067

Cited by 2 publications

(1 citation statement)

References 43 publications

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“…All the samples exhibit a non-ideal capacitive behavior across the entire frequency range, which can be attributed to the distribution of current and potential over the surface [ 65 ]. This behavior is reflected in the constant phase element (CPE) parameters, α and Q CPE , as shown in Table 11 .…”

Section: Resultsmentioning

confidence: 99%

Performance of Anticorrosive Paint Systems for Carbon Steel in the Antarctic Marine Environment

Vera,

Bagnara,

Henríquez

et al. 2023

Materials

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This study evaluated the behavior of three paint systems exposed to the Antarctic marine environment for 45 months compared to a control of uncoated carbon steel with a determined corrosion rate. At the study site, all environmental conditions, solar radiation, and the concentration of environmental pollutants (Cl− and SO2) were evaluated. The paint systems differed in terms of the primer and top coat. Coated samples were studied before and after exposure. They were evaluated visually and using SEM to determine adhesion, abrasion, and contact angle; using the Evans X-Cut Tape Test; using ATR-FTIR spectroscopy to analyze the state of aging of the top layer; and using electrochemical impedance spectroscopy (EIS) for coat protection characterization. The corrosion rate obtained for steel was 85.64 µm year−1, which aligned with a C5 environmental corrosivity category. In general, the evaluation in the period studied showed the paint systems had good adhesion and resistance to delamination, without the presence of surface rust, and exhibited some loss of brightness, an increase in the abrasion index, and a decrease in the percentage of reflectance due to aging. EIS showed good protection capability of the three coating schemes. In general, this type of paint system has not previously been evaluated in an extreme environment after 45 months of exposure to the environment. The results showed that the best behavior was found for the system whose top layer was acrylic–aliphatic polyurethane.

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Section: Resultsmentioning

confidence: 99%

Performance of Anticorrosive Paint Systems for Carbon Steel in the Antarctic Marine Environment

Vera,

Bagnara,

Henríquez

et al. 2023

Materials

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Corrosion Behavior of Copper Exposed in Marine Tropical Atmosphere in Rapa Nui (Easter Island) Chile 20 Years after MICAT

Vera

Valverde

Olave

et al. 2022

Metals

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Atmospheric corrosion of copper, exposed on a tropical island in the South-Central Pacific Ocean, was reported and compared with those of a very similar study at the same site conducted 20 years earlier. The new measurements—taken over three years of exposure, from 2010 to 2013—quantified corrosion by mass loss, characterized corrosion products by X-ray diffraction (DRX) and Raman techniques, observed the attack morphology by Scanning Electron Microscope (SEM), and evaluated the patina resistance using electrochemical techniques. The results showed a copper corrosivity category of C4, and the main copper patina compound, cuprite, was porous, nonhomogeneous, and thin. Electrochemical measurements showed cuprite layer growth as a function of the exposure time, and the morphology did not favor corrosion protection. Finally, when comparing the results to those of a study 22 years previous, the copper corrosion rates increased only slightly, even with increased contaminants associated with growing local populations and continuous tourism on the island.

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Comparison of the protective efficiency of polymethacrylates with different side chain length for AA2024 alloy

Cited by 2 publications

References 43 publications

Performance of Anticorrosive Paint Systems for Carbon Steel in the Antarctic Marine Environment

Performance of Anticorrosive Paint Systems for Carbon Steel in the Antarctic Marine Environment

Corrosion Behavior of Copper Exposed in Marine Tropical Atmosphere in Rapa Nui (Easter Island) Chile 20 Years after MICAT

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