Atomic-scale structure and morphology of γ-FeOOH particles formed during corrosion of Fe-based alloys in aqueous solution

Katsuya Inoue, Kozo Shinoda, Masatoshi Saito, Shigeru Suzuki, Yoshio Waseda

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Quantitative X-ray structural analysis is used for characterizing the atomic-scale structure of γ-FeOOH particles; these particles are formed by immersing pure iron, iron-aluminum, iron-silicon, and iron-phosphorus alloys into an aqueous solution of sodium chloride. The morphology of these γ-FeOOH particles is observed by transmission electron microscopy, and their bonding structure is analyzed using Fourier transform infrared spectroscopy. The realistic atomic-scale structure of the γ-FeOOH particles is estimated by fitting the interference functions with the help of the reverse Monte Carlo simulation technique. The results show that the linkages of fundamental FeO6 octahedral units in γ-FeOOH had underwent deviation from the ideal crystal structure. The structural deviation and morphological change of the particles were considered to be due to the incorporation of foreign ions during theformation of these particles in the aqueous solution.

Original languageEnglish
Pages (from-to)49-53
Number of pages5
Journale-Journal of Surface Science and Nanotechnology
Volume6
DOIs
Publication statusPublished - 2008 Feb 13

Keywords

  • Atomic-scale structure
  • Infrared spectroscopy
  • Iron corrosion products
  • Transmission electron microscopy
  • X-ray diffraction

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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