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Corrosion inhibition of aluminium alloys by tolyltriazole in chloride solutions

Corrosion inhibition of aluminium alloys by tolyltriazole in chloride solutions The effect of tolyltriazole (TTA) on the corrosion of Al‐Cu, Al‐Si‐Cu and Al‐Cu‐Fe alloys in HCl (pH = 0.5) and NaCl (pH = 6 and 11) respectively at 15 ○ C, 25 ○ C and 35 ○ C has been studied by electrochemical methods. Corrosion potentials, corrosion rates, polarization resistances, inhibition efficiencies and activation energies have been determined. The results have shown that the inhibition efficiencies of TTA changed with pH and temperature. TTA has been adsorbed on the alloys to form Cu(I)‐TTA film. TTA was more efficient at pH = 0.5 and 6 than at pH = 11. Increasing the temperature from 15 ○ C to 35 ○ C decreased the inhibition effect of TTA. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Anti-Corrosion Methods and Materials Emerald Publishing

Corrosion inhibition of aluminium alloys by tolyltriazole in chloride solutions

Anti-Corrosion Methods and Materials , Volume 47 (6): 11 – Dec 1, 2000

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References (26)

Publisher
Emerald Publishing
Copyright
Copyright © 2000 MCB UP Ltd. All rights reserved.
ISSN
0003-5599
DOI
10.1108/00035590010354177
Publisher site
See Article on Publisher Site

Abstract

The effect of tolyltriazole (TTA) on the corrosion of Al‐Cu, Al‐Si‐Cu and Al‐Cu‐Fe alloys in HCl (pH = 0.5) and NaCl (pH = 6 and 11) respectively at 15 ○ C, 25 ○ C and 35 ○ C has been studied by electrochemical methods. Corrosion potentials, corrosion rates, polarization resistances, inhibition efficiencies and activation energies have been determined. The results have shown that the inhibition efficiencies of TTA changed with pH and temperature. TTA has been adsorbed on the alloys to form Cu(I)‐TTA film. TTA was more efficient at pH = 0.5 and 6 than at pH = 11. Increasing the temperature from 15 ○ C to 35 ○ C decreased the inhibition effect of TTA.

Journal

Anti-Corrosion Methods and MaterialsEmerald Publishing

Published: Dec 1, 2000

Keywords: Corrosion inhibitors; Aluminium; Copper

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