Corrosion behaviour of sputter-deposited Mg-Zr alloys in a borate buffer solution

A. A. El-Moneim, E. Akiyama, K. M. Ismail, K. Hashimoto

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Corrosion behaviour of sputter-deposited Mg-Zr alloys was examined in a borate buffer solution of pH 8.7. XRD measurements showed that the alloys were supersaturated with Zr. The addition of 29. at.% Zr or more was very effective in increasing the corrosion resistance of Mg by more than four orders of magnitude. XPS analysis of spontaneously formed passive films revealed that the passive film consisted of double oxyhydroxide composed of enriched tetravalent Zr and divalent Mg cations. The enrichment of Zr cations in the passive film is responsible for the enhanced corrosion resistance of Mg-Zr alloys.

Original languageEnglish
Pages (from-to)2988-2993
Number of pages6
JournalCorrosion Science
Volume53
Issue number9
DOIs
Publication statusPublished - 2011 Sep 1
Externally publishedYes

Keywords

  • A. Magnesium
  • A. Sputtered films
  • A. Zirconium
  • B. XPS
  • B. XRD
  • C. Passive film

ASJC Scopus subject areas

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

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