Synthèse
Volume 29, Numéro 1, Pages 36-43
2023-12-14
Study Of The Electrochemical Behavior Of Al-zn-in Based Sacrificial Anodes By Electrochemical Impedance Spectroscopy
Authors : Hana Ferkous .
Abstract
Cathodic protection is one of the most used methods to protect steel structures immersed in seawater. This mode of protection may be used alone or associated with a coating such as paint systems. This work aims to determine the durability of this protection system. We have studied the sacrificial nature of anodes made from Al-Zn-In alloy. The different materials used have been subjected to stationary and non-stationary electrochemically tests, especially electrochemical impedance spectroscopy (EIS) then characterized by spectroscopic methods such as EDX, and SEM. In the case of sacrificial anodes, the results have highlighted the conditions of activation and passivation of these anodes which are of particular industrial interest. A relationship has been established between the functioning of the studied anodes and the nature of the corrosion products.
Keywords
Sacrificial anodes ; Al-Zn-In ; Cathodic protection ; EIS
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