Natural Corrosion Inhibitor from Cistanche Eubulosa Extract for Carbon Steel in HCl: Gravimetric and Electrochemical Characterization

Articles in Press

Document Type : Original Article

Authors

1 Laboratory of Engineering and Applied Technologies, School of Technology, Beni Mellal, Morocco

2 Laboratory of Engineering and Applied Technologies (LITA), Department of Process Engineering, Sultan Moulay Slimane University, Shcool of Technology, Beni Mellal, Morocco

3 .Laboratoire Génie Environnemental, Ecologique et Agro-Industriel, Beni Mellal, Morocco

Abstract

The escalating environmental concerns associated with toxic inorganic inhibitors have spurred the exploration of green alternatives for Oxidation prevention in acid pickling processes. The corrosion behavior of Carbon steel (CS) in 1 M HCl solution was investigated via weight loss (WL), potentiodynamic polarization (PDP), and electrochemical impedance spectroscopy (EIS) techniques. The influence of the eco-friendly corrosion inhibitor, cistanche tubulosa (CT), was evaluated; PDP measurements suggested that cistanche tubulosa possesses mixed-type inhibitory properties, effectively minimizing the corrosion rate of CS through adsorption onto its surface. This inhibitory effect resulted in an inhibition efficiency with a value higher than 92% at 298 K. Scanning electron microscopy (SEM) was employed to characterize the morphology of the CS surface, confirming the layering of barrier film on the CS surface, suggesting a chemisorption mechanism for cistanche tubulosa molecules. Additionally, Fourier-transform infrared spectroscopy (FTIR) analysis was performed to identify the functional groups responsible for the adsorption process. Temperature's influence on the anticorrosive efficiency was examined within the temperature interval of 298–328 Kelvin. Results demonstrated the occurrence of improvement in the ability to inhibit corrosion upon an increment in inhibitor concentration and contact time, while decreasing with increasing temperature.

Keywords

Main Subjects

Progress in Color, Colorants and Coatings

Articles in Press, Accepted Manuscript
Available Online from 21 July 2025

Files

Share

How to cite

Statistics