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http://hdl.handle.net/10553/44575
| Título: | Spatially resolved measurement of electrochemical activity and pH distributions in corrosion processes by scanning electrochemical microscopy using antimony microelectrode tips | Autores/as: | Izquierdo, Javier Nagy, Lívia Varga, Ágnes Santana, Juan J. Nagy, Géza Souto, Ricardo M. |
Clasificación UNESCO: | 3303 ingeniería y tecnología químicas 3306 Ingeniería y tecnología eléctricas |
Palabras clave: | Scanning electrochemical microscopy Galvanic corrosion Antimony microelectrode pH distribution |
Fecha de publicación: | 2011 | Editor/a: | 0013-4686 | Publicación seriada: | Electrochimica acta | Resumen: | A new method for the spatially resolved measurement of pH during corrosion processes with the scanning electrochemical microscope (SECM) is presented. Antimony tips are employed because the dual-function characteristics of this material allow the combined amperometric/potentiometric operation of the SECM. The applicability of this technique is illustrated by considering the galvanic corrosion of a model zinc–iron pair immersed in 0.1 M NaCl aqueous solution. Spatially resolved images of pH and oxygen concentration above the metal specimens could be obtained in the same experiment. | URI: | http://hdl.handle.net/10553/44575 | ISSN: | 0013-4686 | DOI: | 10.1016/j.electacta.2011.07.076 | Fuente: | Electrochimica Acta[ISSN 0013-4686],v. 56 (24), p. 8846-8850 |
| Colección: | Artículos |
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