Abstract
An ionic fluid based on aromatic heterocyclic family constituted by 1,3-diazole groups was investigated. The purpose is to describe their electrochemical characteristics in order to identify the strategy to avoid the A36 carbon steel surface degradation by using electrochemical measurements. We found that the linear polarization resistance reveals an increasing value when the organic unsaturated cyclic ionic fluid was added to the corrosive electrolyte. The polarization curves and Tafel Extrapolation obtained to know the slopes tafel and the inhibitor efficiency from current density (icorr) shows a high efficiency inhibition value.
Highlights
One of the primary engineering materials related to the key input for various industries is the steel [1] [2] [3]
We found that the linear polarization resistance reveals an increasing value when the organic unsaturated cyclic ionic fluid was added to the corrosive electrolyte
These chemical compounds are constituted of organic molecules; their contact with ferrous steel surface provides a marked physicochemical reaction [25] [35]. This physic interaction allows inhibiting the degradation surface exposed to corrosive environments in order to prolong the component life. With all this in mind, we determine the polarization resistance (Rp) from the slop of the polarization curve obtained from linear polarization resistance (LPR) method at the potential interval of ±20 mV relative to Ecorr vs. open circuit corrosion potential (OCP) and according to the standard ASTMG59
Summary
One of the primary engineering materials related to the key input for various industries is the steel [1] [2] [3]. It is better suited to certain physic-chemical characteristics of the molecule such as functional groups, steric factors, aromaticity, and electron density plus their physical properties like high hydrophobic character as well as high solubility in oil [11] [12] [13] [14] These parameters, together with the lattice arrangement of atoms and the chemical composition of the metallic steel surface, express a variable behavior. With all this in mind, in this work we studied the performance of an organic unsaturated cyclic structure, the 1,3 diazole amino compound. We envisage that our results in the corrosion surface inhibition for A36 steel ingot can contribute an appreciated evidence for surface degradation phenomena
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