Article Dans Une Revue Corrosion Science Année : 2023

Resistance of slurry aluminide coatings on pure nickel under different sulphidizing/Hot corrosion conditions at 700 °C

Résumé

A water-based slurry aluminide coating was elaborated on high-purity nickel and tested in synthetic air, synthetic air + 0.5 % SO2/SO3 and synthetic air + 0.5 % SO2/SO3 with sodium sulphate (Na2SO4) deposit at 700 ◦C. The developed coating considerably increased the oxidation-sulphidation resistance of nickel in the absence of saltthrough the formation of thin and adherent alumina scales. In contrast, the presence of sodium sulphate decreased the corrosion resistance. Microstructural investigations indicated that aluminium depletion and the related formation of Ni-rich oxides is mainly responsible for the onset of the corrosion attack following sulphation reaction and fluxing mechanisms.

Domaines

Fichier principal
Vignette du fichier
S0010938X23001348.pdf (5.78 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-04458126 , version 1 (31-03-2025)

Licence

Identifiants

Citer

Benjamin Grégoire, Xabier Montero, Mathias Galetz, Gilles Bonnet, Fernando Pedraza. Resistance of slurry aluminide coatings on pure nickel under different sulphidizing/Hot corrosion conditions at 700 °C. Corrosion Science, 2023, 216, pp.111092. ⟨10.1016/j.corsci.2023.111092⟩. ⟨hal-04458126⟩
102 Consultations
154 Téléchargements

Altmetric

Partager

  • More