Effect of the grain size on the corrosion behaviour of an Al-1% Mn alloy

Authors

  • R. Vera Instituto de Química, Instituto de Física. Universidad Católica de Valparaíso
  • G. Layana Instituto de Química, Instituto de Física. Universidad Católica de Valparaíso
  • A. Olguín Instituto de Química, Instituto de Física. Universidad Católica de Valparaíso

DOI:

https://doi.org/10.3989/revmetalm.1997.v33.i1.876

Keywords:

Aluminium alloys, Grain size, General corrosión, Pitting corrosion

Abstract


The influence of the grain size on the corrosion behaviour of an Al-1% Mn alloy has been investigated in sodium chloride solution through the evaluation of corrosion, repassivation and pitting potentials respectively. Potentiodynamic polarization curves including scratched techniques were also employed. The attack morphology was analyzed by scanning electronic microscopy. Results show that corrosion parameters were not dependent on the alloy microstructure. Micrographies show that the pitting morphology is independent of the alloy grain size and that when the chloride concentration increases, localized attack also increases.

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Published

1997-02-28

How to Cite

Vera, R., Layana, G., & Olguín, A. (1997). Effect of the grain size on the corrosion behaviour of an Al-1% Mn alloy. Revista De Metalurgia, 33(1), 31–36. https://doi.org/10.3989/revmetalm.1997.v33.i1.876

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Section

Articles