Effect of non-toxic corrosion inhibitors on steel in chloride solution
| Autor: | Francis Dalard, E. Triki, Suzanne Maximovitch, Hanene Akrout, Latifa Bousselmi |
|---|---|
| Přispěvatelé: | Unité de recherche Corrosion et Protections des Métalliques, Laboratoire de Modélisation Mathématique et Numérique dans les Sciences de l'Ingénieur [Tunis] (LR-LAMSIN-ENIT), Ecole Nationale d'Ingénieurs de Tunis (ENIT), Université de Tunis El Manar (UTM)-Université de Tunis El Manar (UTM)-Ecole Nationale d'Ingénieurs de Tunis (ENIT), Université de Tunis El Manar (UTM)-Université de Tunis El Manar (UTM), Laboratoire Eau & Environnement, Institut National de Recherche Scientifique et Technique, Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces (LEPMI ), Institut de Chimie du CNRS (INC)-Institut National Polytechnique de Grenoble (INPG)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Joseph Fourier - Grenoble 1 (UJF)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2004 |
| Předmět: |
Materials science
020209 energy Mechanical Engineering Inorganic chemistry [CHIM.MATE]Chemical Sciences/Material chemistry 02 engineering and technology Quartz crystal microbalance 021001 nanoscience & nanotechnology Electrochemistry Chloride Corrosion symbols.namesake Corrosion inhibitor chemistry.chemical_compound chemistry Mechanics of Materials Solid mechanics 0202 electrical engineering electronic engineering information engineering medicine symbols General Materials Science 0210 nano-technology Raman spectroscopy medicine.drug |
| Zdroj: | Journal of Materials Science Journal of Materials Science, Springer Verlag, 2004, 39 (24), pp. 7341-7350. ⟨10.1023/B:JMSC.0000048749.31437.b9⟩ |
| ISSN: | 0022-2461 1573-4803 |
| DOI: | 10.1023/b:jmsc.0000048749.31437.b9 |
| Popis: | International audience; The effect of certain non-toxic inhibitors on the corrosion resistance of ordinary steel in chloride solution (2 × 10−2 M NaCl) at pH 8 was studied by polarisation curves, Raman spectroscopy and the electrochemical quartz crystal microbalance (EQCM).The inhibitors tested were ascorbic acid salts (SA) and 1-hydroxyethylidene, 1-diphosphonic acid salts (SHEDP), the results from addition inhibtors are carried in order to expect a combined effect.The polarisation curves indicated an improvement in polarisation resistance with the addition of SA or SHEDP alone. In the presence of (SA + SHEDP), the inhibiting effect were further improved. Raman spectroscopy analyses confirmed the presence of a film formed by the two inhibitors at the iron electrode surface.The individual behaviour of each inhibiteur was studied with EQCM for different chloride concentrations. The maximum of mass variation was obtained for a lower concentration in the case of SHEDP. The adsorption coverage was calculated. The Langmuir-Freundlich isotherm model is used to fit adsorption of the inhibitors. Interactions between adsorbed species were detected for SHEDP case.For inhibitor mixture, detected mass attained plateau for low(er) inhibitors concentration mixture. At higher concentration, the mass quantity was smaller than that calculated from the sum of detected mass for each alone coumpound. However it provided better protection. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|