Passivation and Localized Corrosion Resistance of Al0.3Cr0.5Fe2MoxNi1.5Ti0.3 Compositionally Complex Alloys: Effect of Mo Content - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Corrosion Science Année : 2024

Passivation and Localized Corrosion Resistance of Al0.3Cr0.5Fe2MoxNi1.5Ti0.3 Compositionally Complex Alloys: Effect of Mo Content

Résumé

Al0.3Cr0.5Fe2MoxNi1.5Ti0.3 (x = 0, 0.05, 0.15) FCC+L21 compositionally complex alloys are investigated using electrochemical and surface science methods in 0.1 M Na2SO4 and 0.1 M NaCl at pH 4 and 10. Mo is mainly found in the FCC phase and amplifies Al and Ti partitioning. The passive film is enriched in Cr(III), Ti(IV), Mo(IV)/Mo(VI), and (at pH 4) Al(III) with elemental fates tracked during film formation and dissolution. Mo presence does not enhance Cr or Ni passivation, instead promoting Ti(IV). Pitting and repassivation potentials increase at higher Mo concentrations, suggesting improved resistance to localized corrosion often initiated at FCC-L21 interfaces.
Fichier principal
Vignette du fichier
Passivation_corsci_2023.pdf (1.72 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04300127 , version 1 (22-11-2023)

Identifiants

Citer

S.B. Inman, Junsoo Han, M.A. Wischhusen, J. Qi, S.R. Agnew, et al.. Passivation and Localized Corrosion Resistance of Al0.3Cr0.5Fe2MoxNi1.5Ti0.3 Compositionally Complex Alloys: Effect of Mo Content. Corrosion Science, 2024, 227, pp.111692. ⟨10.1016/j.corsci.2023.111692⟩. ⟨hal-04300127⟩
18 Consultations
41 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More