Anodic degradation of Zn-Ni coatings in moderately alkaline NaC1 solution. - Laboratoire Interfaces et Systèmes Electrochimiques Accéder directement au contenu
Article Dans Une Revue Materials Letters: X Année : 2021

Anodic degradation of Zn-Ni coatings in moderately alkaline NaC1 solution.

Résumé

Carbon steel samples covered with initially crack-free zinc-nickel coatings were polarized with a small anodic overpotential in moderately alkaline NaCl solution. Along with zinc dissolution, the coatings developed a mud-crack pattern due to tensile stress release, allowing the electrolyte to access the underlying steel surface. Simonkolleite grew on both the zinc-nickel coating and the steel substrate. The resulting current density, that was first strongly anodic, switched to small cathodic values when the coating surface was almost fully covered by a compact simonkolleite layer.

Domaines

Chimie
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Dates et versions

hal-03274902 , version 1 (30-06-2021)

Identifiants

Citer

F. Vucko, M. Prestat, L. Holzer, Bernard E Tribollet, K. Pélissier, et al.. Anodic degradation of Zn-Ni coatings in moderately alkaline NaC1 solution.. Materials Letters: X, 2021, 293, pp.129701. ⟨10.1016/j.matlet.2021.129701⟩. ⟨hal-03274902⟩
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