[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5012/jkcs.2012.56.2.201

Corrosion Inhibition of Aluminium using 3-Hydroxy flavone in the Presence of Quarternary Ammonium Salts in NaOH Medium

Princey, J. Morris (P.G. & Research Department of Chemistry, Bishop Heber College (Autonomous))
Nagarajan, Prabavathi (P.G. & Research Department of Chemistry, Bishop Heber College (Autonomous))

Publication Information

Journal of the Korean Chemical Society / v.56, no.2, 2012 , pp. 201-206 More about this Journal

Abstract

The anticorrosive effect of 3-Hydroxyflavone (3HF) in combination with quarternary ammonium bromide and iodide salts (QAB and QAI) for aluminium corrosion in NaOH medium was studied at the temperature range of 303K-323K using weight loss study, potentiodynamic polarization study and impedance spectroscopic measurements. The results revealed that the inhibition efficiency increases with the inhibitor concentration and it further increases on the addition of quarternary ammonium bromide and iodide salts. The enhanced inhibition efficiency of the inhibitor in the presence of quarternary ammonium salts may be due to synergistic effect. The adsorption process of 3HF on the aluminium surface obeys Langmuir's adsorption isotherm. The mechanism of adsorption is further supported by Scanning Electron Microscopic study (SEM).

Keywords

3-Hydroxyflavone (3HF); Quarternary ammonium salts; Aluminium; Electrochemical measurements; Synergism;

Citations & Related Records

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