Influence of applied potential on tin content in electrodeposition of Zn–Sn alloy coatings and its effect on corrosion protection

Sofiane Benidir, Ahmed Madani, Ouidad Baka, Amine Kherfi, Joseph Delhalle, Zineb Mekhalif

Résultats de recherche: Contribution à un journal/une revueArticleRevue par des pairs

Résumé

In the present work, the electrochemical deposition of Zn–Sn alloy at different applied potentials is studied. The deposits were prepared from a chloride bath on a stainless steel substrate (SS) using cyclic voltammetry, chronoamperometry and anodic linear stripping voltammetry methods. X-ray diffraction, scanning electron microscopy and energy dispersive were used to study the structural, morphological and chemical composition of the deposits. The corrosion behavior of the elaborated samples was studied by open circuit potential (OCP), Tafel plot and electrochemical impedance spectroscopy (EIS) in 3.5 wt-% NaCl solution. Results indicated that the Zn–Sn alloy coatings exhibit a synergistic property combining the barrier behavior afforded by Sn and strong passive behavior of Zn. Electrochemical measurements obtained by Tafel and EIS plots revealed that Zn–Sn alloy coatings obtained at more positive potential of −1.1 V present best corrosion resistance.

langue originaleAnglais
Pages (de - à)899-909
Nombre de pages11
journalInorganic and Nano-Metal Chemistry
Volume52
Numéro de publication7
Les DOIs
Etat de la publicationPublié - 2022

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