Rare earth conversion coatings grown on AA6061 aluminum alloys. Corrosion studies

Silvia Beatriz Brachetti-Sibaja, Miguel Antonio Domínguez-Crespo, Aidé Minerva Torres-Huerta, Edgar Onofre-Bustamante, Wencel De La Cruz-Hernández

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The present work is aimed to investigate the corrosion resistance of rare earth (RE) protective coatings deposited by spontaneous deposition on AA6061 aluminum alloy substrates. Coatings were deposited from water-based Ce(NO3)3 and La(NO3)3 solutions by varying parameters such as rare earth solution concentration, bath temperature and immersion time. The values of the Tafel slopes indicate that the cathodic process is favored by concentration polarization rather than activation polarization.

Original languageEnglish
Pages (from-to)393-410
Number of pages18
JournalJournal of the Mexican Chemical Society
Volume58
Issue number4
StatePublished - 1 Oct 2014

Keywords

  • Aluminum alloy
  • Cerium oxide
  • Chemical conversion coatings
  • Corrosion evaluation
  • Lanthanum oxide
  • Rare earth elements

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