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Article Dans Une Revue Corrosion Science Année : 2023

Corrosion behavior of a compositionally complex alloy utilizing simultaneous Al, Cr, and Ti passivation

Résumé

The corrosion behavior of the Al$_{0.3}$Cr$_{0.5}$Fe2Mn$_{0.25}$Mo$_{0.15}$Ni$_{1.5}$Ti$_{0.3}$ compositionally complex dual-phase alloy was explored in a variety of electrolytes. Comparable corrosion resistance to 316L stainless steel and Ni-Cr binaries was observed in NaCl despite lower Cr concentrations. Individual elemental fates during corrosion were identified by combinations of in-situ atomic emission spectroelectrochemistry and ex-situ X-ray photoelectron spectroscopy with high-resolution surface analysis and depth profiling. A potentiostatically grown passive film was enriched in Al(III), Cr(III), Ti(IV), and Mo(VI). Al-Ti and Cr-Ti layers were suggested but significant Al, Cr, and Ti mixing was present. Proposed benefits of Al-Cr-Ti coexistence are addressed.
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hal-04051811 , version 1 (25-06-2024)

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Samuel B. Inman, Debashish Sur, Junsoo Han, Kevin Ogle, John R. Scully. Corrosion behavior of a compositionally complex alloy utilizing simultaneous Al, Cr, and Ti passivation. Corrosion Science, 2023, 217, pp.111138. ⟨10.1016/j.corsci.2023.111138⟩. ⟨hal-04051811⟩
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