Atomic-scale structure and morphology of ferric oxyhydroxides formed by corrosion of an iron-silicon alloy

Katsuya Inoue, Sang Koo Kwon, Shigeru Suzuki, Masatoshi Saito, Yoshio Waseda

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Quantitative X-ray structural analysis using an in-house X-ray diffraction apparatus has been used for characterizing the atomic-scale structure of the γ-FeOOH (lepidocrocite) particles prepared by dipping a pure iron and an iron-silicon alloy into aqueous solutions containing sodium chloride. The morphology of the γ-FeOOH particles was observed by transmission electron microscopy (TEM), and their bonding structure were analyzed using Fourier transform infrared spectroscopy (FT-IR). The realistic atomic-scale structures in the γ-FeOOH particles were estimated by fitting the interference functions with the help of the reverse Monte Carlo (RMC) simulation technique. The results showed that the linkages of fundamental FeO6, octahedral units in the particles were deviated from the ideal crystal structure. The structural deviation is considered to be due to the incorporation of foreign ions during the formation of these particles in the aqueous solutions.

Original languageEnglish
Pages (from-to)243-246
Number of pages4
JournalMaterials Transactions
Volume47
Issue number2
DOIs
Publication statusPublished - 2006 Feb 1

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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