On the pseudo-hyperbolic behavior of charge transfer resistance-temperature dependence in corrosion behavior of Nickel based glass alloy

Khadijah M Emran; Inam M A Omar; Sanaa T Arab; Noureddine Ouerfelli

doi:10.1038/s41598-022-10462-y

On the pseudo-hyperbolic behavior of charge transfer resistance-temperature dependence in corrosion behavior of Nickel based glass alloy

Sci Rep. 2022 Apr 19;12(1):6432. doi: 10.1038/s41598-022-10462-y.

Authors

Khadijah M Emran¹, Inam M A Omar², Sanaa T Arab³, Noureddine Ouerfelli⁴

Affiliations

¹ Chemistry Department, College of Science, Taibah University, Al-Madinah, Saudi Arabia. kabdalsamad@taibahu.edu.sa.
² Chemistry Department, College of Science, Taibah University, Al-Madinah, Saudi Arabia.
³ Chemistry Department, Faculty of Sciences, Al-Faisaliah, King Abdulaziz University, Jeddah, Saudi Arabia.
⁴ Institut Supérieur des Technologies Médicales de Tunis, LR13SE07, Laboratoire de Biophysique et Technologies Médicales, Université de Tunis El Manar, Tunis, Tunisia.

Abstract

Temperature plays an important role in promoting the corrosion of metals. The Arrhenius plot can interpret the corrosion rate-temperature dependence, where the Arrhenius behavior gives a geometrical meaning and makes explicit a positive or negative linear dependence of charge transitivity and temperature. In addition, according to the Arrhenius interpretation, it represents the energy that the molecule in the initial state of the process must acquire before it can take part in the reaction, whether it is a physical, or a chemical process. Taking into account the deviation from the linearity, we have extended the Arrhenius-type expression by one term in 1/T² and we have given some physical meaning to the new related coefficients for which it is found that they depend closely on the number of acid hydrogen atoms in the polyacid for the corrosion and passivation of the Nickel based metallic glass alloy of the composition Ni_82.3Cr₇Fe₃Si_4.5B_3.2. Moreover, we can consider that the deviation to the Arrhenius linear behavior as a super-Arrhenius behavior In addition, a mathematical analysis of the trend of experimental scatter points of the charge transfer resistance with temperature permits us to reveal an interesting homographic behavior which leads us to suggest an original empirical model with only two optimal adjustable parameters, as well as a new pseudo-power dependence of the number of hydrogen atoms in the polyacid.