Muthukumar, N. and Ilangovan, A. and Maruthamuthu, S. and Palaniswamy, N. (2007) Surface analysis of inhibitor films formed by 1-aminoanthraquinones on API 5L-X60 steel in diesel–water mixtures. Electrochimica Acta, 52. pp. 7183-7192. ISSN 0013-4686

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Abstract

Three long chain fatty acid substituted aminoanthraquinone (AAQ) were synthesized in the laboratory and evaluated as corrosion inhibitors for steel (API 5L-X60) in diesel–water mixtures at room temperature by weight loss and electrochemical studies. Potentiodynamic polarization studies carried out at room temperature on steel (API 5L-X60) in diesel with water containing 120 ppm of chloride and 50 ppm of aminoanthraquinone (AAQ) derivative showed that all the investigated compounds are of anodic type. The results obtained indicate that 1-aminoanthraquinone derivatives are good corrosion inhibitors in diesel–water mixtures. Oleic acid substituted aminoanthraquinone was found to be the best corrosion inhibitor. It exhibited 92% inhibition efficiency against the corrosion of API 5L-X60 steel in diesel–water mixtures. The surface analysis by AFM indicates the adsorption of synthesized inhibitors on the metal surface.

Item Type:	Article
Uncontrolled Keywords:	Fatty acid substituted aminoanthraquinone; Corrosion inhibition; Diesel–water; Steel API 5L-X60
Subjects:	Corrosion Science and Engineering
Divisions:	UNSPECIFIED
Depositing User:	ttbdar CECRI
Date Deposited:	27 Mar 2012 15:45
Last Modified:	27 Mar 2012 15:45
URI:	http://cecri.csircentral.net/id/eprint/641

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