Corrosión por picaduras del aluminio y de la aleación Al-6201 en soluciones de NaCl

R. Vera; R. Schrebler; G. Layana; F. Orellana; A. Olguín

doi:10.3989/revmetalm.1998.v34.i3.793

Pitting by corrosion in aluminum and Al-6201 alloy

Authors

R. Vera Instituto de Química
R. Schrebler Instituto de Química
G. Layana Instituto de Química
F. Orellana Instituto de Química
A. Olguín Instituto de Física. Universidad Católica de Valparaíso

DOI:

https://doi.org/10.3989/revmetalm.1998.v34.i3.793

Keywords:

Aluminum, Aluminum alloy, Pitting corrosion, Corrosion, Pitting and repassivation potentials

Abstract

The susceptibility of pure aluminum and aluminum 6201 alloy to pitting was investigated in sodium chloride solutions through determination of the corrosion, repassivation and pitting potentials. Potentiodynamic polarization including scratching techniques were employed being also determined the type and relative amount of corrosion damage to the metals. The morphology of the attack was determined using scanning electron microscopy (SEM). The results showed a similar performance for aluminum 6201 alloy and aluminum. It was also observed that an increase in chloride concentration resulted in a decrease in the corrosion, pitting and repassivation potentials of both materials.

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Published

1998-06-30

How to Cite

Vera, R., Schrebler, R., Layana, G., Orellana, F., & Olguín, A. (1998). Pitting by corrosion in aluminum and Al-6201 alloy. Revista De Metalurgia, 34(3), 268–273. https://doi.org/10.3989/revmetalm.1998.v34.i3.793

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Issue

Vol. 34 No. 3 (1998)

Section

NO_SECCION_SI_RESUMEN

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