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Imidazole Derivative as a Novel Corrosion Inhibitor for Mild Steel in Mixed Pickling Bath
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Author(s): Moussa Ouakki (Laboratory of Organic Chemistry, Catalysis, and Environment, Faculty of Sciences, Ibn Tofaïl University, Morocco), Zakia Aribou (Independent Researcher, Morocco), Khadija Dahmani (Laboratory of Organic Chemistry, Catalysis, and Environment, Faculty of Sciences, Ibn Tofaïl University, Morocco), Otmane Kharbouch (Independent Researcher, Morocco), Elhachmia Ech-chihbi (Independent Researcher, Morocco), Mohamed Rbaa (Laboratory of Organic Chemistry, Catalysis, and Environment, Faculty of Sciences, Ibn Tofaïl University, Morocco), Mouhsine Galai (Independent Researcher, Morocco)and Mohammed Cherkaoui (Laboratory of Organic Chemistry, Catalysis, and Environment, Faculty of Sciences, Ibn Tofaïl University, Morocco)
Copyright: 2023
Pages: 33
Source title:
Handbook of Research on Corrosion Sciences and Engineering
Source Author(s)/Editor(s): Younes El Kacimi (University Ibn Tofail, Morocco)and Lei Guo (Tongren University, China)
DOI: 10.4018/978-1-6684-7689-5.ch017
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Abstract
Mild steel is a well-known and widely used material in various industries. However, its exposure to aggressive environments limits its use because of its tendency to corrode. This work focuses on the inhibition of corrosion of mild steel by two organic compounds based on Imidazole, namely 2-(4-chlorophenyl)-1,4,5-triphenyl-1H-imidazole and 1,2,4,5-tetraphenyl-1H-imidazole, in mixed pickling bath. The experimental investigation was carried out using several techniques including electrochemical impedance spectroscopy and potentiodynamic polarization. The adsorption process of corrosion inhibitors on the mild steel surface follows Langmuir adsorption model. Surface characterization analysis using scanning electron microscopy coupled with energy dispersive X-ray analysis (EDX), X-ray diffraction analysis (XRD) supported the formation of a barrier layer that covers the mild steel surface. Weight loss measurements were also tested using UV-vis spectrometry (UV-vis).
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