Leiva García, R.; Akid, R.; Greenfield, D.; Gittens, J.; Muñoz Portero, MJ.; García Antón, J. (2012). Study of the sensitisation of a highly alloyed austenitic stainless steel, Alloy 926 (UNS N08926), by means of scanning electrochemical microscopy. Electrochimica Acta. 70:105-111. https://doi.org/10.1016/j.electacta.2012.03.036
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/56589
Título:
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Study of the sensitisation of a highly alloyed austenitic stainless steel, Alloy 926 (UNS N08926), by means of scanning electrochemical microscopy
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Autor:
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Leiva García, Rafael
Akid, R.
Greenfield, D.
Gittens, J.
Muñoz Portero, María José
García Antón, José
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Entidad UPV:
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Universitat Politècnica de València. Departamento de Ingeniería Química y Nuclear - Departament d'Enginyeria Química i Nuclear
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Fecha difusión:
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Resumen:
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The feedback mode of a scanning electrochemical microscope (SECM) was applied to study differences in the reactivity of a highly alloyed austenitic stainless steel, Alloy 926 (UNS N08926), in its unsensitised and sensitised ...[+]
The feedback mode of a scanning electrochemical microscope (SECM) was applied to study differences in the reactivity of a highly alloyed austenitic stainless steel, Alloy 926 (UNS N08926), in its unsensitised and sensitised state. Alloy 926 was heated at 825 °C for 1 h in an inert atmosphere in order to produce a sensitised metallurgical condition. Sensitisation was due to chromium carbide formation at the grain boundaries. The oxygen reduction reaction was used as an indicator to monitor the effect of the sensitisation process on the corrosion activity of the Alloy 926 surface in a 35 g l -1 NaCl solution. Higher oxygen consumption was observed above the sensitised sample than above the unsensitised sample due to differences in the oxide films of the two alloy conditions.
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Palabras clave:
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Austenitic stainless steel
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Intergranular corrosion
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Scanning electrochemical microscopy
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Sensitisation
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Chromium carbide
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Corrosion activity
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Feedback mode
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Inert atmospheres
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Metallurgical conditions
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NaCl solution
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Oxygen consumption
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Oxygen reduction reaction
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Scanning electrochemical microscopes
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Alloys
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Carbides
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Corrosion
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Electrolytic reduction
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Grain boundaries
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Oxide films
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Scanning electron microscopy
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Scanning probe microscopy
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Sodium chloride
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State feedback
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Analytic equipment
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Derechos de uso:
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Reserva de todos los derechos
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Fuente:
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Electrochimica Acta. (issn:
0013-4686
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DOI:
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10.1016/j.electacta.2012.03.036
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Editorial:
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Elsevier
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Versión del editor:
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http://dx.doi.org/10.1016/j.electacta.2012.03.036
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Código del Proyecto:
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info:eu-repo/grantAgreement/MICINN//CTQ2009-07518/ES/ESTUDIO DE LA CORROSION TERMOGALVANICA EN LAS MAQUINAS DE ABSORCION DE LIBR DE DOBLE EFECTO MEDIANTE TECNICAS ELECTROQUIMICAS Y DE IMAGEN/
info:eu-repo/grantAgreement/MEC//BES-2007-16321/ES/BES-2007-16321/
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Agradecimientos:
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We wish to express our gratitude to MICINN (CTQ2009-07518, BES2007-16321) for its financial support during the stay at Sheffield Hallam University, to Universitat Politecnica de Valencia (CEI-01-11), to Dr. Oliver Lewis ...[+]
We wish to express our gratitude to MICINN (CTQ2009-07518, BES2007-16321) for its financial support during the stay at Sheffield Hallam University, to Universitat Politecnica de Valencia (CEI-01-11), to Dr. Oliver Lewis from Sheffield Hallam University, and to Dr. Helena Alves from Krupp VDM for supplying the materials.
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Tipo:
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Artículo
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