An Auger and XPS survey of cerium active corrosion protection for AA2024-T3 aluminum alloy

Arnaud Uhart (1) , Jean-Bernard Ledeuil (1) , Danielle Gonbeau (1) , Jean-Charles Dupin (1) , Jean-Pierre Bonino (2) , Florence Ansart (2) , Julien Esteban (3)

1 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux
2 CIRIMAT - Centre interuniversitaire de recherche et d'ingénierie des matériaux
3 Messier Bugatti Dowty Bidos

XPS evidenced the proximity of the inhibitor with the surface AA2024 alloy.Cerium conversion coatings with [Ce] = 0.1 M offer the best corrosion resistance. SAM shown the migration of Ce + III entities towards the corrosion pits or crevices. High resolution analyses (Auger) connecting the nano-scale order with the chemical distribution.

Keywords: AA2024 alloy; Cerium; Conversion coating; XPS; Auger; Corrosion

Domains: Material chemistry; Materials

Arnaud Uhart, Jean-Bernard Ledeuil, Danielle Gonbeau, Jean-Charles Dupin, Jean-Pierre Bonino, et al.. An Auger and XPS survey of cerium active corrosion protection for AA2024-T3 aluminum alloy. Applied Surface Science, 2016, 390, pp.751-759. ⟨10.1016/j.apsusc.2016.08.170⟩. ⟨hal-01454825⟩