Sánchez Tovar, R.; Leiva García, R.; García Antón, J. (2015). Characterization of thermal oxide films formed on a duplex stainless steel by means of confocal-Raman microscopy and electrochemical techniques. Thin Solid Films. 576:1-10. https://doi.org/10.1016/j.tsf.2014.12.024
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/51029
Title:
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Characterization of thermal oxide films formed on a duplex stainless steel by means of confocal-Raman microscopy and electrochemical techniques
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Author:
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Sánchez Tovar, Rita
Leiva García, Rafael
García Antón, José
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UPV Unit:
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Universitat Politècnica de València. Instituto de Seguridad Industrial, Radiofísica y Medioambiental - Institut de Seguretat Industrial, Radiofísica i Mediambiental
Universitat Politècnica de València. Departamento de Ingeniería Química y Nuclear - Departament d'Enginyeria Química i Nuclear
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Issued date:
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Abstract:
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In this work oxide films have been developed on the surface of a duplex stainless steel (UNS 1.4462) using high temperature confocal microscopy to follow their growth. The characteristics of these oxide films have been ...[+]
In this work oxide films have been developed on the surface of a duplex stainless steel (UNS 1.4462) using high temperature confocal microscopy to follow their growth. The characteristics of these oxide films have been analyzed by means of weight-gain measurements, Raman microscopy and electrochemical techniques, namely potentiodynamic polarization curves and electrochemical impedance spectroscopy. The results show an increase in the amount of oxides (particularly γ-Fe2O3 and Fe3O4) with temperature. Regarding the electrochemical properties of these films, the corrosion resistance of the film tends to be lower with the heat treatment temperature, probably due to a more porous and heterogeneous scale. Mott–Schottky plots show the n-type semiconductive behavior of the films with donor densities that decrease with the enhancement of the temperature.
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Subjects:
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Stainless steel
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Electrochemical impedance spectroscopy
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Raman spectroscopy
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Confocal laser microscopy
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Oxidation
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Passivation
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Copyrigths:
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Reserva de todos los derechos
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Source:
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Thin Solid Films. (issn:
0040-6090
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DOI:
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10.1016/j.tsf.2014.12.024
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Publisher:
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Elsevier
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Publisher version:
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http://dx.doi.org/10.1016/j.tsf.2014.12.024
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Project ID:
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info:eu-repo/grantAgreement/MICINN//UPOV08-3E-012/ES/MICROSCOPIO LASER CONFOCAL/
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/UPV//CEI-01-11/
info:eu-repo/grantAgreement/GVA//MY08%2FISIRM%2FS%2F100/
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Thanks:
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We wish to express our gratitude to MICINN (CTQ2009-07518) (UPVO8-3E-012), to Universitat Politecnica de Valencia (CEI-01-11), to the Generalitat Valenciana for its help in the CLSM acquisition (MY08/ISIRM/S/100), and to ...[+]
We wish to express our gratitude to MICINN (CTQ2009-07518) (UPVO8-3E-012), to Universitat Politecnica de Valencia (CEI-01-11), to the Generalitat Valenciana for its help in the CLSM acquisition (MY08/ISIRM/S/100), and to Dr. Asuncion Jaime for her translation assistance.
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Type:
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Artículo
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