Weight Loss, Thermodynamics, SEM, and Electrochemical Studies on N-2-Methylbenzylidene-4-antipyrineamine as an Inhibitor for Mild Steel Corrosion in Hydrochloric Acid
Israa Abd Alkadir Aziz,
Makarim H. Abdulkareem,
Iman Adnan Annon,
Mahdi M. Hanoon,
Mohammed H. H. Al-Kaabi,
Lina M. Shaker,
Ahmed A. Alamiery,
Wan Nor Roslam Wan Isahak,
Mohd S. Takriff
Affiliations
Israa Abd Alkadir Aziz
Production Engineering and Metallurgy, University of Technology, Baghdad 10001, Iraq
Makarim H. Abdulkareem
Production Engineering and Metallurgy, University of Technology, Baghdad 10001, Iraq
Iman Adnan Annon
Production Engineering and Metallurgy, University of Technology, Baghdad 10001, Iraq
Mahdi M. Hanoon
Production Engineering and Metallurgy, University of Technology, Baghdad 10001, Iraq
Mohammed H. H. Al-Kaabi
College of Industrial Management of Oil and Gas, Basrah University of Oil and Gas, Basrah 61001, Iraq
Lina M. Shaker
Medical Instruments Technology Engineering, Al Mansour University College, Baghdad 10001, Iraq
Ahmed A. Alamiery
Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, University Kebangsaan Malaysia (UKM), P.O. Box 43000, Bangi 43600, Malaysia
Wan Nor Roslam Wan Isahak
Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, University Kebangsaan Malaysia (UKM), P.O. Box 43000, Bangi 43600, Malaysia
Mohd S. Takriff
Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, University Kebangsaan Malaysia (UKM), P.O. Box 43000, Bangi 43600, Malaysia
The use of N-2-methylbenzylidene-4-antipyrineamine as an acid corrosion inhibitor for mild steel surfaces in hydrochloric acid is discussed in this article by means of weight loss, electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM) methods. The experimental findings exhibited that N-2-methylbenzylidene-4-antipyrineamine is a significant corrosion inhibitor for the mild steel in 1.0 M HCl solution and that its protection efficiency touches the peak at 5 × 10–4 M, exhibiting 91.8% for N-2-methylbenzylidene-4-antipyrineamine. The inhibitory efficiency increases as the inhibitor concentration rises and reduces as the temperature rises. Temperature has a significant impact on corrosion and blocking activities, which is extensively examined and explained. According to the gravimetric results, the examined inhibitor inhibits mild steel surface corrosion by providing a barrier at the metal–hydrochloric acid medium interface. Thermodynamic characteristics were combined with a quantum chemistry investigation using density functional theory to provide more insight into the inhibitory effect mechanism. The tested inhibitor adsorbs on the mild steel surface based on Langmuir’s adsorption isotherm method.
