Observation of Chemical State for Interstitial Solid Solution of Carbon in Low-carbon Steel by Soft X-ray Absorption Spectroscopy

DOI Web Site 被引用文献1件 参考文献23件
  • Ninomiya Kakeru
    Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
  • Kamitani Kazutaka
    Institute for Materials Chemistry and Engineering, Kyushu University
  • Tamenori Yusuke
    Japan Synchrotron Radiation Research Institute
  • Tsuruta Kazuki
    Japan Synchrotron Radiation Research Institute
  • Okajima Toshihiro
    Kyushu Synchrotron Light Research Center
  • Yoshimura Daisuke
    Kyushu Synchrotron Light Research Center
  • Sawada Hideaki
    Advanced Technology Research Laboratories, Nippon Steel Corporation
  • Kinoshita Keisuke
    Advanced Technology Research Laboratories, Nippon Steel Corporation
  • Nishibori Maiko
    Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University Faculty of Engineering Sciences, Kyushu University

抄録

<p>The near-edge X-ray absorption fine structure at the carbon K edge was measured for determining the chemical state of interstitial carbon in a low-carbon steel. In addition, the wavelength dependence of the photoelectron spectrum of the surface of the steel was evaluated, and a contamination and oxidation layer of 3 nm thickness was found. As a result, it was possible to observe a change in the chemical state of carbon existing in bulk iron located deeper than the oxidation and contamination layers, by evaluating the difference spectra between the sample and a reference. Furthermore, by evaluating the shape change of the difference spectra based on the heat treatment time, it was found that the chemical state of carbon in bulk iron changes with heat treatment.</p>

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