Effect of acid proticity on the thermodynamic parameters of charge transfer resistance in corrosion and passivation of nickel based glass alloy

Khadijah M Emran; Noureddine Ouerfelli

doi:10.1038/s41598-024-52036-0

Effect of acid proticity on the thermodynamic parameters of charge transfer resistance in corrosion and passivation of nickel based glass alloy

Sci Rep. 2024 Jan 20;14(1):1815. doi: 10.1038/s41598-024-52036-0.

Authors

Khadijah M Emran¹, Noureddine Ouerfelli²

Affiliations

¹ Chemistry Department, college of Science, Taibah University, Medina, Saudi Arabia. kabdalsamad@taibahu.edu.sa.
² Institut Supérieur des Technologies Médicales de Tunis, LR13SE07, Laboratoire de Biophysique et Technologies Médicales, Université de Tunis El Manar, Tunis, Tunisia.

Abstract

The effect of temperature on electrochemical properties of Ni_82.3Cr₇Fe₃Si_4.5B_3.2 glassy alloy in different acid proticity has been investigated utilizing AC and DC methods. Firstly, the handling of experimental data on the temperature dependence of charge transfer resistance, as well as corrosion current density permits us to determine the values of classical Arrhenius parameters as well as the thermodynamic ones considered approximately independent of temperature. This leads us to deduce a global interpretation on the phenomenon of corrosion and polarization. Secondly, the deviation to the linearity of the Arrhenius behavior and the real dependence on temperature of the thermodynamic parameters, permit us to clearly quantify the effect of the acid proticity and define, for the first time, the concept of current Arrhenius parameters and the current thermodynamic ones, as well as the modeling of the enthalpy-enthalpy compensation. Moreover, the effect of temperature can be investigated using the Vogel-Fulcher-Tammann model to reveal that the corresponding Vogel temperature has an interesting physical meaning.