Role of La addition for enhancing the corrosion resistance of Mg–Dy alloy

A. Prasad, Y. L. Chiu, I. P. Jones, S. S. Singh, N. N. Gosvami, J. Jain

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We report the corrosion behaviour of a novel Mg–10Dy–0.7La alloy in the as-cast and solutionised conditions. The corrosion performance of binary Mg–10Dy and the new ternary Mg–10Dy–0.7La alloy was determined using a combination of immersion test, potentio-dynamic polarisation as well as electrochemical impedance spectroscopy. The results reveal that the addition of La to the Mg–10Dy alloy significantly improves its corrosion performance and this improvement was due to the reduction of the micro-galvanic effect. Moreover, the presence of Dy and La promotes the development of an oxide layer which passivates the surface and further enhances the corrosion resistance of these alloys.

Original languageEnglish
Pages (from-to)575-583
Number of pages9
JournalCorrosion Engineering Science and Technology
Volume56
Issue number6
DOIs
Publication statusPublished - 11 May 2021

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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