Anticorrosion Activity of 8-Quinoline Sulphonyl Chloride on Mild Steel in 1 M HCl Solution. (29th February 2016)

• Record Type: Journal Article
• Authors: Ganapathi Sundaram, R.; Sundaravadivelu, M.
• Other Names: Bamberger Menahem Academic Editor.
• Is Part Of: Journal of metallurgy. Volume 2016(2016)
• Publication Date: 2016-02-29
• Subjects: Metallurgy -- Periodicals; Metallurgy; Periodicals; Electronic journals; 669
• DOI: 10.1155/2016/8095206
• Languages: English
• ISSNs: 1687-9465

Abstract

Abstract : An anticorrosion activity of 8-quinoline sulphonyl chloride (8-QSC) on mild steel in 1 M HCl solution was studied by weight loss (WL) method and electrochemical methods, namely, electrochemical impedance spectroscopy (EIS), Tafel polarization (TP), and linear polarization resistance (LPR). Results obtained from WL method, EIS, TP, and LPR, showed that 8-QSC is a good corrosion inhibitor for mild steel in 1 M HCl solution. The results indicated that the inhibition efficiency and extent of surface coverage were increased with increase in inhibitor concentration and decrease in the corrosion rate. This is due to the formation of protective film on the surface of mild steel. Adsorption of 8-QSC on the mild steel surface was found to obey the Langmuir adsorption isotherm. A Tafel plot indicates that the used inhibitor behaves predominantly as cathodic type. The surface morphology of the mild steel was studied by Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray (EDX) Spectroscopy techniques. All the methods give the same order of inhibition efficiencies.