Corrosion behavior of pre-treated Fe-Al alloys in aqueous acid solutions

Naoya Masahashi, G. Kimura, M. Oku, S. Hanada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The corrosion behavior of pre-treated Fe-Al alloy in a sulfuric acid solution and chloride-containing solution was studied. Alumina layer formed at 1073-1173 K on the surface of Fe-Al alloy improves the corrosion resistance of the alloy, whereas that at 1273 K does not improve it. This was explained by the defects of Al2O3 layer, the fraction of Al 2O3 in the oxides, crystallity of Al2O 3, and residual stress in the oxide layer. On the other hand, TiO2 layer produced by dip coating and subsequent annealing at 523-773 K slightly improved the corrosion resistance of the alloy. The effect of the oxide layer on the aqueous corrosion was discussed focusing on the quality of the oxide.

Original languageEnglish
Title of host publicationDesigning of Interfacial Structures in Advanced Materials and their Joints - Proceedings of the Int. Workshop on Designing of Interfacial Structures in Advanced Materials and their Joints, DIS'06
PublisherTrans Tech Publications Ltd
Pages233-238
Number of pages6
ISBN (Print)9783908451334
DOIs
Publication statusPublished - 2007 Jan 1
EventInternational Workshop on Designing of Interfacial Structures in Advanced Materials and their Joints, DIS'06 - Osaka, Japan
Duration: 2006 May 182006 May 20

Publication series

NameSolid State Phenomena
Volume127
ISSN (Print)1012-0394

Other

OtherInternational Workshop on Designing of Interfacial Structures in Advanced Materials and their Joints, DIS'06
CountryJapan
CityOsaka
Period06/5/1806/5/20

Keywords

  • Acid corrosion
  • Alumina oxide
  • Fe-Al alloy
  • Pre-treatment
  • Titanium oxide

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

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