Enhancement of corrosion resistance of Fe-Cr-Mo alloy to molten Al by thermal oxidation in air

Phacharaphon Tunthawiroon, Yunping Li, Ning Tang, Akihiko Chiba

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Effect of oxidation on Fe-29Cr-6Mo alloy/molten Al interface reaction was investigated. Oxidation treatment was effective in enhancing the corrosion resistance to molten Al because of the dominant coverage of Cr2O3 film on sample surface. However, in the case of the sample oxidised for 4h, because of the existence of Fe2O3 in the film, the oxide film was less effective than samples oxidised for longer duration. The lower corrosion resistance of oxidised Fe-29Cr-6Mo alloys in comparison to oxidised Co-29Cr-6Mo alloys could be related to the existence of σ phase in the former, which increased local defects within the film.

Original languageEnglish
Pages (from-to)97-102
Number of pages6
JournalCorrosion Science
Volume77
DOIs
Publication statusPublished - 2013 Dec

Keywords

  • A. Alloy
  • A. Aluminium
  • C. Interfaces
  • C. Oxide coatings

ASJC Scopus subject areas

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

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