NickelMaghrebV1, France, Analysis, bibRecord, 000337

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

Identifieur interne : 000337 ( France/Analysis ); précédent : 000336; suivant : 000338

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:

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000398
to stream PascalFrancis, to step Curation: 000043
to stream PascalFrancis, to step Checkpoint: 000414
to stream Main, to step Merge: 000B29
to stream Main, to step Curation: 000B03
to stream Main, to step Exploration: 000B03
to stream France, to step Extraction: 000337

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>
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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

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri