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Titolo:
Inhibition of copper aqueous corrosion by non-toxic linear sodium heptanoate: mechanism and ECAFM study
Autore:
Rocca, E; Bertrand, G; Rapin, C; Labrune, JC;
Indirizzi:
Univ Nancy 1, Lab Chim Solide Mineral, CNRS, UMR 7555, F-54506 Vandoeuvre Nancy, France Univ Nancy 1 Vandoeuvre Nancy France F-54506 06 Vandoeuvre Nancy, France Pole Univ, CREST, F-25211 Montbeliard, France Pole Univ Montbeliard France F-25211 CREST, F-25211 Montbeliard, France
Titolo Testata:
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
fascicolo: 1-2, volume: 503, anno: 2001,
pagine: 133 - 140
Fonte:
ISI
Lingua:
ENG
Soggetto:
FORCE MICROSCOPY; PASSIVE FILMS; SITU; SURFACES; 1,2,3-BENZOTRIAZOLE; AFM; STM;
Keywords:
copper corrosion; inhibition; passive film; sodium heptanoate; in situ ECAFM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Rocca, E Univ Nancy 1, Lab Chim Solide Mineral, CNRS, UMR 7555, BP 239, F-54506 Vandoeuvre Nancy, France Univ Nancy 1 BP 239 Vandoeuvre Nancy FranceF-54506 ancy, France
Citazione:
E. Rocca et al., "Inhibition of copper aqueous corrosion by non-toxic linear sodium heptanoate: mechanism and ECAFM study", J ELEC CHEM, 503(1-2), 2001, pp. 133-140

Abstract

Research on non-toxic inhibitors is of considerable interest for replacingclassical molecules containing sulphur, nitrogen or an aromatic function, like benzotriazole (BZT) in copper corrosion. This paper reports a study ofthe conditions and mechanism of copper corrosion inhibition by linear sodium heptanoate, with a formula of CH3-(CH2)(5)-COONa. Stationary electrochemical measurements (voltamperometry, chronopotentiometry) have established that sodium heptanoate is a good 'green' inhibitor with the optimum conditions of 0.08 M NaC7 at pH 8. In addition, the in situ electrochemical AFM technique (ECAFM) has proved that the inhibition is dueto the formation of a layer, mainly constituted by a copper heptanoate, Cu(CH3-(CH2)(5)-COO)(2). Studies of the passive films by ECAFM allow us to observe in situ the morphology of the films and the change in function of several electrochemical parameters, without the ordinary surface preparation necessary for ex situ techniques, which may damage the layer. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 29/09/20 alle ore 10:34:14