The corrosion phenomenon in oil and gas industry is a serious issue affecting metallic structures and pipelines. The main aggressive species flowing through oil pipelines is NaCl. The presence of gases in the corrosive medium (CO₂ and H₂S), increases, even more, its aggressiveness. Usually, to mitigate corrosion, liquid inhibitors are added to the corrosive medium. In the present study, N-hydroxyethyl-imidazoline derivatives of avocado oil was synthesized as a green corrosion inhibitor. The test was performed on 1018 carbon steel at 5, 10, 25, 50 and 100 ppm. Electrochemical techniques as polarization curves (PC), the open circuit potential (OCP), the lineal polarization resistance (LPR) and the electrochemical impedance spectroscopy (EIS) were applied. The results obtained from the OCP indicates that the inhibitor can be classified as a cathodic type one. On the one hand, PC, RPL and EIS determined that the highest corrosion rate was obtained without the inhibitor. On the other hand, by adding inhibitor, the corrosion resistance increased, obtaining the optimal concentration at 10 ppm. The EIS technique in the angle phase format showed the formation of two time constants, which indicates the inhibitor presence. Finally, the SEM analyses showed a minor attack at 5 and 10 ppm. GRAPHICAL ABSTRACT

The present study is focused on evaluating the corrosion resistance of 1018 carbon steel and the influence of using a corrosion inhibitor in its corrosion behavior. In particular, the corrosion inhibitor prepared in the present study consists in an organic compound of hydroxyethyl-imidazoline derivate based on avocado oil. A mixture of brine-diesel saturated with CO₂ was used as a corrosive medium at 70°C. The electrochemical techniques employed to evaluate the performance of the inhibitor were polarization curves, open circuit potential, linear polarization resistance and electrochemical impedance spectroscopy. The results revealed that a high efficiency was obtained when the inhibitor was added in 25 ppm. This fact was supported by scanning electron microscopy, where a uniform corrosion process was observed with the formation of an iron carbonate film. This film was formed when the inhibitor was added in 5, 10 and 25 ppm. However, when the concentrations used were 50 and 100 ppm, a localized corrosion process was promoted. In the present study, some calculations were performed to determinate the chemical adsorption process energy (\(\Delta G_{{{\text{ads}}}}^{0}~\) = –50.89 kJ/mol) through isotherm adsorption of Langmuir.

Amorphous metallic materials have emerged as a promising class of functional materials for energy storage and conversion owing to their disordered atomic structure and unique interfacial properties. This review focuses on amorphous metals and alloys, including metallic glasses and high-entropy amorphous systems, with particular emphasis on their surface- and interface-driven behavior in electrochemical environments. This review analyzes how structural disorder influences key properties such as electronic structure, ion transport, catalytic activity, and mechanical compliance and how these factors govern performance in batteries, supercapacitors, electrolyzers, and fuel cells. Special attention is given to interfacial phenomena, including charge-transfer kinetics, corrosion and passivation processes, and structural evolution during long-term operation. In addition, recent advances in fabrication strategies such as rapid solidification, thin-film deposition, mechanical alloying, thermoplastic forming, and electrodeposition are discussed in relation to their ability to tailor amorphous structures and interfaces. This review also highlights critical failure mechanisms and discusses some strategies to mitigate these effects. Overall, this work provides a focused perspective on the role of amorphous metallic surfaces and interfaces in electrochemical systems, identifying current challenges in scalability, durability, and compositional control, and outlining future directions for their integration into next-generation energy technologies.