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Electrochemical Characterization of the Stainless Steel Corrosion immersed in Seawater under Turbulent Flow conditions by Electrochemical Noise

Published online by Cambridge University Press:  01 February 2011

D. Cabrera-de la Cruz ,
R. Galván-Martínez ,
R. Orozco-Cruz ,
R. Torres-Sánchez  and
A. Contreras
D. Cabrera-de la Cruz
Affiliation:
Unidad Anticorrosión, Instituto de Ingeniería, Universidad Veracruzana, Av. S.S. Juan Pablo II S/N, Z. Universitaria, Fracc. Costa Verde, Veracruz, México, CP 94294. Email: [email protected]
R. Galván-Martínez
Affiliation:
Unidad Anticorrosión, Instituto de Ingeniería, Universidad Veracruzana, Av. S.S. Juan Pablo II S/N, Z. Universitaria, Fracc. Costa Verde, Veracruz, México, CP 94294. Email: [email protected]
R. Orozco-Cruz
Affiliation:
Unidad Anticorrosión, Instituto de Ingeniería, Universidad Veracruzana, Av. S.S. Juan Pablo II S/N, Z. Universitaria, Fracc. Costa Verde, Veracruz, México, CP 94294. Email: [email protected]
R. Torres-Sánchez
Affiliation:
Universidad Michoacana de San Nicolás de Hidalgo, Instituto de Investigaciones Metalúrgicas, Edif. “U”, C.U. Apartado Postal 52-B, C.P. 58000, Morelia, Mich. México
A. Contreras
Affiliation:
Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas Norte #152, Col. San Bartolo Atepehuacan, México D.F. C.P. 07730, México
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Abstract

The electrochemical studies of the corrosion can provide indirect techniques that they can determinate the corrosion rate of metals or alloys immersed in a corrosive medium. For many years, most studies about the cathodic and anodic polarization behaviour of metals have been confined to traditional steady-state techniques, such as potentiodynamic sweep measurements. However, steady-state techniques are limited because they give information only on the rate-determining step. Moreover, during the measuring process, technique such as potentiodynamic sweep polarize the electrode surface to such a great extent, in order to uncover corrosion mechanism, that the validity of the results can be questioned particularly in the cases when protective films. Transient electrochemical techniques such as Electrochemical Noise (EN), are less intrusive because they can provide information about the processes without disturbing the reactions with the voltage application.

Keywords

CorrosionPassivationSteelOptical MetallographicOxide
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1275: Structural and Chemical Characterization of Metals, Alloys and Compounds , 2010 , S3-47
Copyright
Copyright © Materials Research Society 2010

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