Alkyl carboxylates as efficient and green inhibitors of magnesium alloy ze41 corrosion in aqueous salt solution
No Thumbnail Available
Date
2014
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Ltd
Abstract
Long chain alkyl carboxylates like stearate, palmitate and myristate were investigated for their efficiency in inhibiting the corrosion of magnesium alloy ZE41 in an aqueous salt medium containing 0.2M Na<inf>2</inf>SO<inf>4</inf> and 0.1M NaCl. The techniques like potentiodynamic polarization and EIS, along with SEM and EDX analyses were employed. The inhibition was proposed to be the result of adsorption of alkyl carboxylates, which was found to obey the Langmuir adsorption isotherm. The inhibition was assumed to be the outcome of the formation of a compact modified surface film due to the precipitation of adsorbed alkyl carboxylates of magnesium. © 2014 Elsevier Ltd.
Description
Keywords
Carboxylation, Electrochemical corrosion, Magnesium, Magnesium alloys, Aqueous salt solution, Aqueous salts, B. EIS, Corrosion of magnesium alloys, EDX analysis, Green inhibitors, Langmuir adsorption isotherms, Modified surfaces, Corrosion inhibitors
Citation
Corrosion Science, 2014, 85, , pp. 411-427