Electrophoretic deposition of boehmite particles to improve the anti-corrosion behavior of anodized aluminum alloy 2024-T3

Florent Caubert (1) , Pierre-Louis Taberna (1) , Laurent Arurault (1) , Benoit Fori (2)

1 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux
2 Mecaprotec Industries

The purpose of this study was to prepare and evaluate a new two-step sealing process for a porous and tortuous anodic film, prepared on aluminum alloy (AA) 2024-T3, to ensure anti-corrosion properties. This process involves a cathodic electrophoretic deposition of boehmite particles, followed by a hydrothermal post-treatment. This two-step sealing was evaluated through three industrial tests (dye-spot, continuity and salt spray) and the low frequency resistance. Such sealing of the anodic film on AA 2024-T3 showed promising anti-corrosion behavior, suggesting a real potential interest of this innovative process for future industrial applications.

Mots clés: Aluminum; Porous anodic film; Boehmite particles; Electrophoretic deposition; Hydrothermal post-treatment; Sealing

Domaines: Matériaux

Florent Caubert, Pierre-Louis Taberna, Laurent Arurault, Benoit Fori. Electrophoretic deposition of boehmite particles to improve the anti-corrosion behavior of anodized aluminum alloy 2024-T3. Bulgarian Chemical Communications, 2020, 52, pp.21-27. ⟨hal-03025295⟩