Protection against salt water of the AA5083 alloy by treatments based on lanthanides salts

Authors

  • A. Aballe Dpto. de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica. Univ. de Cádiz. Fac. de Ciencias del Mar
  • M. Bethencourt Dpto. de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica. Univ. de Cádiz. Fac. de Ciencias del Mar
  • F. J. Botana Dpto. de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica. Univ. de Cádiz. Fac. de Ciencias del Mar
  • M. Marcos Dpto. de Ingeniería Mecánica y Diseño Industrial. Univ. de Cádiz. Esc. Superior de Ingeniería
  • J. Pérez Dpto. de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica. Univ. de Cádiz. Fac. de Ciencias del Mar
  • M. A. Rodríguez-Chacón Dpto. de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica. Univ. de Cádiz. Fac. de Ciencias del Mar

DOI:

https://doi.org/10.3989/revmetalm.1998.v34.iExtra.706

Keywords:

Environmental friendly surface pretreatments, Aluminium alloys, Lanthanide elements

Abstract


AA5083 sheet samples have been pre-treated by full immersion in aqueous solutions of different lanthanide trichlorides salts, namely CeCl3, LaCl3 and SmCl3 The inhibition against uniform and pitting corrosión, in 3.5 % NaCl solutions, provided by such surface treatments has been estimated using electrochemical techniques. Protection against pitting has been quantified in terms of the percentage of increase observed for the pitting nucleation resistance. Among all the pretreatments tested, optimum performances have been observed for those carried out in 500 ppm CeCl3 aqueous solutions for fifteen days. However, acceptable protection degrees are observed even after 48 h in this solution.

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Published

1998-05-30

How to Cite

Aballe, A., Bethencourt, M., Botana, F. J., Marcos, M., Pérez, J., & Rodríguez-Chacón, M. A. (1998). Protection against salt water of the AA5083 alloy by treatments based on lanthanides salts. Revista De Metalurgia, 34(Extra), 47–51. https://doi.org/10.3989/revmetalm.1998.v34.iExtra.706

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Articles