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Article Dans Une Revue Applied Surface Science Année : 2016

Electrochemical characterization of chromia- and alumina-forming nickel-based superalloys in molten silicates

Carine Petitjean
Pierre-Jean Panteix
Stephane Mathieu
Christophe Rapin
Michel Vilasi

Résumé

A comparison of the corrosion behaviour of simplified chromia- and alumina-forming alloys (Ni-30Cr and Ni-8Al-28Cr) in molten glass is performed via electrochemical methods. A pre-oxidation treatment in air prior to immersion ensured the formation of a 2-pm-thick oxide scale of Cr2O3 or Al2O3. The lifetime of Ni-30Cr depended on the competition between the oxide growth and its dissolution in the melt. For Ni-8Al-28Cr, the high solubility of alumina in the melt studied here led to severe aluminium loss in a few minutes and clearly demonstrated the higher efficiency of chromia-forming alloys for molten glass applications.
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Dates et versions

hal-01295113 , version 1 (30-03-2016)

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Tuti Katrina Abdullaha, Carine Petitjean, Pierre-Jean Panteix, Stephane Mathieu, Christophe Rapin, et al.. Electrochemical characterization of chromia- and alumina-forming nickel-based superalloys in molten silicates. Applied Surface Science, 2016, 360 (B), pp.510-518. ⟨10.1016/j.apsusc.2015.10.176⟩. ⟨hal-01295113⟩
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