Corrosion of galvanised steel under an electrolytic drop
| Autor: | Francis Dalard, Jean-Pierre Caire, Emilie Dubuisson, Sabine Szunerits, Philippe Lavie |
|---|---|
| Přispěvatelé: | 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), PSA Peugeot-Citroen, PSA Peugeot Citroën (PSA) |
| Rok vydání: | 2007 |
| Předmět: |
Materials science
020209 energy General Chemical Engineering 02 engineering and technology Electrolyte Electrochemistry Chloride Corrosion symbols.namesake 0202 electrical engineering electronic engineering information engineering medicine General Materials Science Composite material Drop (liquid) Metallurgy [CHIM.MATE]Chemical Sciences/Material chemistry General Chemistry 021001 nanoscience & nanotechnology Galvanization Galvanised steel Dielectric spectroscopy Electrode symbols Atmospheric corrosion 0210 nano-technology Electrochemical impedance spectroscopy Microelectrodes Thin electrolyte layer medicine.drug |
| Zdroj: | Corrosion Science Corrosion Science, Elsevier, 2007, 49 (2), pp. 910-919. ⟨10.1016/j.corsci.2006.05.027⟩ |
| ISSN: | 0010-938X |
| DOI: | 10.1016/j.corsci.2006.05.027 |
| Popis: | International audience; Described here for the first time is an investigation of the local corrosion behaviour of galvanized steel using an electrolytic droplet comprising chloride and sulphate ions. The maximal height of the electrolytic layer and the diameter varied between 500–1100 μm with a total diameter between 1.47–3.35 mm, respectively. These measurements were possible by using microelectrodes as reference and counter electrodes, which could be inserted into the electrolyte droplet thus forming an electrochemical microcell. Polarization curves as well as electrochemical impedance spectroscopy plots were recorded under the electrolyte droplet configuration allowing the determination of the polarisation resistance Rp and the proportionality constant k of the Stern and Geary equation. The influence of temperature, chloride concentration, pH and the thickness of the electrolytic layer on the corrosion rate of galvanised steel were studied. |
| Databáze: | OpenAIRE |
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