Ce nanoparticles and sol-gel hybrid organic-inorganic coatings maximize corrosion protection in the anodized AA2024-T3

Prada Ramirez, O. M.; Kremmer, T. M.; Marin, J. H.; da Silva, B. P.; Starykevich, Maksim; Tunes, Matheus Araujo; Ferreira, M. G. S.; Aoki, I. V.; Ando, R. A.; Pogatscher, S.; de Melo, H. G.

doi:10.1016/j.corsci.2023.111330

Ce nanoparticles and sol-gel hybrid organic-inorganic coatings maximize corrosion protection in the anodized AA2024-T3

Journal Article · Wed Jun 14 00:00:00 EDT 2023 · Corrosion Science

DOI:https://doi.org/10.1016/j.corsci.2023.111330· OSTI ID:1985865

Prada Ramirez, O. M. ^[1]; Kremmer, T. M. ^[2]; Marin, J. H. ^[3]; da Silva, B. P. ^[3]; Starykevich, Maksim ^[4]; ^[5]; Ferreira, M. G. S. ^[4]; Aoki, I. V. ^[3]; Ando, R. A. ^[3]; Pogatscher, S. ^[2]; de Melo, H. G. ^[1]

Polytechnic School of the University of Sao Paulo, SP (Brazil)
University of Leoben (Austria)
Univ. of Sao Paulo (Brazil)
University of Aveiro (Portugal)
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Herein we demonstrate that the corrosion resistance of the AA2024-T3 alloy can be maximized with the application of top protective sol-gel hybrid organic-inorganic coatings. Samples combining Ce nanoparticles within the pores of the anodic layer with the top sol-gel coatings were observed to outperform samples featuring only the coating. This research unravels the self-healing capability against corrosion of the sol-gel coating when Ce nanoparticles are present, as well as a good coverage of defective regions within the oxide by the hybrid layer. This research opens a paradigm aiming at maximizing the corrosion resistance for non-ferrous anodized alloys.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program; Austrian Research Promotion Agency (FFG)

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 1985865

Alternate ID(s):: OSTI ID: 2000104

Report Number(s):: LA-UR-23-22662

Journal Information:: Corrosion Science, Journal Name: Corrosion Science Vol. 221; ISSN 0010-938X

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

36 MATERIALS SCIENCE
Ce post-treatment
anodization
local electrochemical impedance spectroscopy
scanning transmission electron microscopy
self-healing
sol-gel hybrid coating

Ce nanoparticles and sol-gel hybrid organic-inorganic coatings maximize corrosion protection in the anodized AA2024-T3

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