A Novel Method for the Study of the Effects of Cl− Ions on Passivation Using the Cl36 Radioisotope: Application to the Passivation of Nickel
| Autor: | J. ‐M. Herbelin, N. Barbouth, P. Marcus |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Passivation
Renewable Energy Sustainability and the Environment Chemistry Inorganic chemistry Analytical chemistry Isotopes of chlorine chemistry.chemical_element Condensed Matter Physics Electrochemistry Charged particle Surfaces Coatings and Films Electronic Optical and Magnetic Materials Ion Metal Nickel Transition metal visual_art Materials Chemistry visual_art.visual_art_medium |
| Zdroj: | Journal of The Electrochemical Society. 137:3410-3414 |
| ISSN: | 1945-7111 0013-4651 |
| DOI: | 10.1149/1.2086230 |
| Popis: | This paper reports on a method developed for the {ital in-situ} investigation of the interactions of Cl{sup {minus}} with metal surfaces. The amount of chlorides at the surface is measured by a radiotracer method, using Cl{sup 36} radioisotope. The principle of the method is to detect, at the back of the electrode, the electrons which are emitted by adsorbed Cl{sup {minus}} or Cl{sup {minus}} incorporated in a surface film. The experimental setup allows simultaneous radiochemical and electrochemical measurements to be performed on polycrystal or single-crystal materials. Surface concentrations of chlorides in the range of the submonolayer up to chloride films can be quantitatively measured. The power of this novel method is illustrated by a study of the surface concentration of Cl{sup {minus}} on nickel in the active and passive regions in 0.05 M H{sub 2}SO{sub 4} + 5 {times} 10{sup {minus}3} M (Cl{sup {minus}}). |
| Databáze: | OpenAIRE |
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