Cl K-Edge XANES Spectra of Atmospheric Rust on Fe, Fe-Cr and Fe-Ni Alloys Exposed to Saline Environment

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  • Konishi Hiroyuki
    Synchrotron Radiation Research Center, Kansai Research Establishment, Japan Atomic Energy Research Institute
  • Yamashita Masato
    Division of Mechanical Engineering, Graduate School of Engineering, University of Hyogo
  • Uchida Hitoshi
    Division of Mechanical Engineering, Graduate School of Engineering, University of Hyogo
  • Mizuki Jun'ichiro
    Synchrotron Radiation Research Center, Kansai Research Establishment, Japan Atomic Energy Research Institute

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Abstract

Cl K-edge XANES measurements of atmospheric corrosion products (rust) formed on Fe, Fe-Ni and Fe-Cr alloys in chloride pollution have been performed using synchrotron radiation in order to clarify roles of anticorrosive alloying elements and of Cl in the corrosion resistance of weathering steel. The spectra of binary alloys show a shoulder structure near the absorption edge. The intensity of the shoulder peak depends on the kind and amount of the alloying element, whereas the energy position is invariant. This indicates that Cl is not combined directly with alloying elements in the rust.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 45 (12), 3356-3359, 2004

    The Japan Institute of Metals and Materials

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