Protección contra la corrosión en agua de mar de la aleación AA5083 mediante tratamientos basados en sales lantánidas

  1. Aballe, A. 1
  2. Bethencourt, M. 1
  3. Botana, F. J. 1
  4. Marcos, M. 2
  5. Pérez, J. 1
  6. Rodríguez-Chacón, M. A. 1
  1. 1 Dpto. de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica. Univ. de Cádiz. Fac. de Ciencias del Mar
  2. 2 Dpto. de Ingeniería Mecánica y Diseño Industrial. Univ. de Cádiz. Esc. Superior de Ingeniería
Journal:
Revista de metalurgia

ISSN: 0034-8570

Year of publication: 1998

Volume: 34

Issue: 0

Pages: 47-51

Type: Article

DOI: 10.3989/REVMETALM.1998.V34.IEXTRA.706 DIALNET GOOGLE SCHOLAR lock_openOpen access editor

More publications in: Revista de metalurgia

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.

Data source: Dialnet