Corrosion behavior of iron-aluminum alloys and its composite steel in sulfuric acid

Naoya Masahashi, Go Kimura, Masaoki Oku, Koichi Komatsu, Sadao Watanabe, Shuji Hanada

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The corrosion behavior of an iron-aluminum alloy with bcc structure and a composite of an iron-aluminum and a steel was studied in H2SO 4 solution. The corrosion resistance deteriorates with increasing aluminum content of an iron-aluminum alloy. XPS measurements showed a magnetite formation on the corroded surface and a preferential corrosion of iron. The corrosion resistance for the composite of an iron-aluminum alloy and a CrMo steel is comparable to that of a CrMo steel. This implies that a corrosion-resistant composite is achievable by controlling the aluminum content of the Fe-Al alloy without the additives.

Original languageEnglish
Pages (from-to)829-839
Number of pages11
JournalCorrosion Science
Volume48
Issue number4
DOIs
Publication statusPublished - 2006 Apr 1

Keywords

  • A. Alloy
  • B. XPS
  • C. Acid corrosion
  • Intermetallics
  • SEM

ASJC Scopus subject areas

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

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