Oxidation kinetics of a Ni-Cu based cermet at high temperature - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Corrosion Science Année : 2013

Oxidation kinetics of a Ni-Cu based cermet at high temperature

Résumé

The oxidation kinetics of a cermet composed of Ni-Cu alloy and nickel ferrite was studied by thermogravimetry at 960 °C under oxygen in the range 0.5-77 kPa. After an initial mass increase up to 15 g/m2 due to oxidation of surface metallic particles, the mass change was attributed to both outwards NiO growth and internal oxidation. Above 40 g/m2, the NiO scale thickness remained constant and the oxidation kinetics followed a complete parabolic law. The variations of the kinetic rate with oxygen partial pressure allowed to propose mechanisms, rate-controlling steps and kinetic laws in both transient and long term oxidation periods.
Fichier principal
Vignette du fichier
MP-CS-69-OATAO.pdf (1.05 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-00772778 , version 1 (04-06-2013)

Identifiants

Citer

Christophe Honvault, Véronique Peres, Laurent Cassayre, Pierre Chamelot, Patrice Palau, et al.. Oxidation kinetics of a Ni-Cu based cermet at high temperature. Corrosion Science, 2013, 68, pp.154-161. ⟨10.1016/j.corsci.2012.11.007⟩. ⟨hal-00772778⟩
244 Consultations
197 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More