Del Olmo Martínez, RubénBastos, AlexandreYasakau, KirylSushkova, AlesiaArrabal Durán, RaúlTedim, João2025-02-142025-02-142024-10-05Del Olmo, Rubén, et al. «Corrosion Inhibitor from Nature: Fundamentals of Tannic Acid Inhibition for AA2024 Alloy». Applied Surface Science, vol. 680, enero de 2025, p. 161434. DOI.org (Crossref), https://doi.org/10.1016/j.apsusc.2024.161434.10.1016/j.apsusc.2024.161434https://hdl.handle.net/20.500.14352/118090This study addresses the fundamentals of corrosion inhibition of AA2024 alloy by tannic acid (TA), a Cr-free and eco-friendly natural product. To this end, the AA2024 alloy was immersed in NaCl solution (50 mM) with different TA concentrations (0.1–10 mM) for 7 days. Surface (SEM, Raman, and SKPFM) and electrochemical analyses (EIS, PDP, and SVET) revealed mixed inhibition after 1 day of immersion in TA solution. Long-term immersion tests in TA solutions produced a tannate-rich oxide film on the surface. The films with low tannate content (formed in 0.1 and 1 mM TA) showed the highest stability and corrosion resistance.engAttribution-NonCommercial-ShareAlike 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-sa/4.0/journal articlehttps://doi.org/10.1016/j.apsusc.2024.161434https://www.sciencedirect.com/science/article/pii/S0169433224021494?via%3Dihubopen access620AA2024AluminiumTannic acidCorrosion inhibitorEco-friendlyGreen inhibitionMateriales3312 Tecnología de Materiales