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Corrosion Inhibition of Aluminium using 3-Hydroxy flavone in the Presence of Quarternary Ammonium Salts in NaOH Medium
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 Title & Authors
Corrosion Inhibition of Aluminium using 3-Hydroxy flavone in the Presence of Quarternary Ammonium Salts in NaOH Medium
Princey, J. Morris; Nagarajan, Prabavathi;
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 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;
 Language
English
 Cited by
1.
Organic corrosion inhibitors for aluminum and its alloys in chloride and alkaline solutions: A review, Arabian Journal of Chemistry, 2016  crossref(new windwow)
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