Efecto de la adición de cobre y estaño en el comportamiento a la corrosión por picadura del acero inoxidable AISI 304

A. Pardo; M. C. Merino; J. Botella; V. Matres; F. Viejo; M. Carboneras; R. Arrabal

doi:10.3989/revmetalm.2004.v40.i5.284

Influence of copper and tin addition on pitting corrosion behaviour of AISI 304 Stainless Steel

Authors

A. Pardo Departamento de Ciencia de Materiales, Facultad de Química, Universidad Complutense
M. C. Merino Departamento de Ciencia de Materiales, Facultad de Química, Universidad Complutense
J. Botella Acerinox S.A
V. Matres Acerinox S.A
F. Viejo Departamento de Ciencia de Materiales, Facultad de Química, Universidad Complutense
M. Carboneras Departamento de Ciencia de Materiales, Facultad de Química, Universidad Complutense
R. Arrabal Departamento de Ciencia de Materiales, Facultad de Química, Universidad Complutense

DOI:

https://doi.org/10.3989/revmetalm.2004.v40.i5.284

Keywords:

stainless steels, pitting corrosion, cyclic polarization

Abstract

The influence of copper and tin addition on the pitting corrosion resistance of AISI 304 stainless steel in 3.5 % NaCl at 20 °C has been studied using potenciodinamic and cyclic polarization. From that study the effect of alloying elements (Cu and Sn) in the corrosion, pitting and repassivation potentials were determined. The effect of copper and tin on the critical pitting temperature (CPT) was determined by i_con-time-temperature curves. The influence of these alloying elements in FeCl₃ under ASTM G48-00 norm was also studied. The addition of copper favours the nucleation of pits. The addition of tin slightly improves the corrosion resistance. The synergic effect of Cu-Sn was positive at low concentrations.

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Published

2004-10-30

How to Cite

Pardo, A., Merino, M. C., Botella, J., Matres, V., Viejo, F., Carboneras, M., & Arrabal, R. (2004). Influence of copper and tin addition on pitting corrosion behaviour of AISI 304 Stainless Steel. Revista De Metalurgia, 40(5), 335–340. https://doi.org/10.3989/revmetalm.2004.v40.i5.284

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Issue

Vol. 40 No. 5 (2004)

Section

Articles

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