TY - JOUR
T1 - Observation of Chemical State for Interstitial Solid Solution of Carbon in Low-carbon Steel by Soft X-ray Absorption Spectroscopy
AU - Ninomiya, Kakeru
AU - Kamitani, Kazutaka
AU - Tamenori, Yusuke
AU - Tsuruta, Kazuki
AU - Okajima, Toshihiro
AU - Yoshimura, Daisuke
AU - Sawada, Hideaki
AU - Kinoshita, Keisuke
AU - Nishibori, Maiko
N1 - Publisher Copyright:
© 2020 Iron and Steel Institute of Japan. All rights reserved.
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
KW - Aging
KW - Chemical state analysis
KW - Low-carbon steel
KW - Photoelectron spectroscopy
KW - X-ray absorption spectroscopy
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U2 - 10.2355/isijinternational.ISIJINT-2019-206
DO - 10.2355/isijinternational.ISIJINT-2019-206
M3 - Article
AN - SCOPUS:85078516675
VL - 60
SP - 114
EP - 119
JO - Transactions of the Iron and Steel Institute of Japan
JF - Transactions of the Iron and Steel Institute of Japan
SN - 0915-1559
IS - 1
ER -