| Issue |
J. Phys. IV France
Volume 123, March 2005
|
|
|---|---|---|
| Page(s) | 307 - 311 | |
| DOI | https://doi.org/10.1051/jp4:2005123055 | |
J. Phys. IV France 123 (2005) 307-311
DOI: 10.1051/jp4:2005123055
Corrosion inhibition of 70Cu-30Zn alloy in 0,5 M HNO3 by 3-amino-1,2,4-triazole
S. El Issami1, L. Bazzi1, M. Mihit1, M. Hilali1, R. Salghi2 and H. El Ait Addi31 Laboratoire de Chimie-Physique, Département de Chimie Faculté des Sciences, BP. 28/S, Agadir, Maroc
2 Laboratoire d'Analyse Agro-Alimentaire, École Supérieure de Technologie d'Agadir, Agadir, Maroc
3 Laboratoire de l'Établissement Autonome de Contrôle et de Coordination des Exportations d'Agadir, Agadir, Maroc
Abstract
The inhibitive action of 3-amino-1,2,4-triazole (ATA)
on 70Cu-30Zn alloy corrosion in HNO3 0,5M was examined. Gravimetric
and electrochemical tests were used. The results obtained show that the ATA
reduces effectively the dissolution of 70Cu-30Zn alloy. The inhibition
efficiency in aerated acid increased with increasing ATA concentration to a
maximum of 69% at 10-2M. The adsorption of the inhibitor is found to
obey to the Langumir adsorption isotherm.
© EDP Sciences 2005