Current oscillations in austenitic stainless steel induced by the presence of chloride ions
The conditions for current oscillations in austenitic stainless steel (AISI Type 303) in 1M H<sub>2</sub>SO<sub>4</sub>, containing CI- ions are given. The periodic oscillations are produced in a close potential range determined at the active-passive transition region. It req...
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| Autores principales: | , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
1982
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/118247 |
| Aporte de: |
| Sumario: | The conditions for current oscillations in austenitic stainless steel (AISI Type 303) in 1M H<sub>2</sub>SO<sub>4</sub>, containing CI- ions are given. The periodic oscillations are produced in a close potential range determined at the active-passive transition region. It requires a non-homogeneous distribution of inclusions and carbides at the metal surface and a concentration range of CI- ion where active and passive areas coexist on the metal surface. The constraints at the surface determining these two regions are related to the CI- ion competitive adsorption and the local accumulation of corrosion products. Electrochemical data and SEM observations are correlated. |
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