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Weight Loss, Thermodynamics, SEM, and Electrochemical Studies on N-2-Methylbenzylidene-4-antipyrineamine as an Inhibitor for Mild Steel Corrosion in Hydrochloric Acid

Authors :
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
Source :
Lubricants, Vol 10, Iss 2, p 23 (2022)
Publication Year :
2022
Publisher :
MDPI AG, 2022.

Abstract

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.

Details

Language :
English
ISSN :
20754442
Volume :
10
Issue :
2
Database :
Directory of Open Access Journals
Journal :
Lubricants
Publication Type :
Academic Journal
Accession number :
edsdoj.82b0fb2d335e4044a0c8a93d1c4042f3
Document Type :
article
Full Text :
https://doi.org/10.3390/lubricants10020023