NickelMaghrebV1, PascalFrancis, Checkpoint, bibRecord, 000414

Electrochemical behaviour of Cu-Ni alloy in 3%NaCl medium polluted by sulphides: effect of aminotriazole

Identifieur interne : 000414 ( PascalFrancis/Checkpoint ); précédent : 000413; suivant : 000415

Electrochemical behaviour of Cu-Ni alloy in 3%NaCl medium polluted by sulphides: effect of aminotriazole

Auteurs : A. Laachach [Maroc] ; A. Srhiri [Maroc] ; C. Fiaud [France] ; A. Benbachir [Maroc]

Source :

British Corrosion Journal [ 0007-0599 ] ; 2001.

RBID : Pascal:02-0223594

Descripteurs français

Pascal (Inist)
- Corrosion électrochimique, Inhibiteur corrosion, Sodium chlorure, Sulfure, Triazole dérivé, Impédance, Vitesse corrosion, Accélération, Alliage base cuivre, Protection corrosion, Nickel alliage, Alliage CuNi, Cu Ni.

English descriptors

KwdEn :
- Acceleration, Copper base alloys, Corrosion inhibitor, Corrosion protection, Corrosion rate, Electrochemical corrosion, Impedance, Nickel alloy, Sodium chloride, Sulfides, Triazole derivatives.

Abstract

The behaviour of 70/30 Cu-Ni alloy in 3%NaCl medium, both pure and contaminated by 1 ppm S^2- ions, has been studied in the absence and in the presence of aminotriazole at a concentration of 10^-4M. Potentiodynamic and electrochemical impedance measurements showed that sulphides accelerate the corrosion of the alloy in 3%NaCl. The aminotriazole inhibited both anodic and cathodic corrosion processes. The inhibiting effect was higher when the solution contained the S^2- ion Analysis by scanning electron microscopy (SEM) showed that the inhibitor acts by establishing a very thin film on the metal surface. This film behaves as a barrier to the diffusion of dissolved oxygen and to the transport of the metal ions from the melt to the solution.

Affiliations:

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Links to Exploration step

Pascal:02-0223594

Le document en format XML

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<front><div type="abstract" xml:lang="en">The behaviour of 70/30 Cu-Ni alloy in 3%NaCl medium, both pure and contaminated by 1 ppm S<sup>2-</sup>
 ions, has been studied in the absence and in the presence of aminotriazole at a concentration of 10<sup>-4</sup>
M. Potentiodynamic and electrochemical impedance measurements showed that sulphides accelerate the corrosion of the alloy in 3%NaCl. The aminotriazole inhibited both anodic and cathodic corrosion processes. The inhibiting effect was higher when the solution contained the S<sup>2-</sup>
 ion Analysis by scanning electron microscopy (SEM) showed that the inhibitor acts by establishing a very thin film on the metal surface. This film behaves as a barrier to the diffusion of dissolved oxygen and to the transport of the metal ions from the melt to the solution.</div>
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Electrochemical behaviour of Cu-Ni alloy in 3%NaCl medium polluted by sulphides: effect of aminotriazole

Electrochemical behaviour of Cu-Ni alloy in 3%NaCl medium polluted by sulphides: effect of aminotriazole

Source :

Descripteurs français

English descriptors

Abstract

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Links to Exploration step

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