Shift of the Absorption Edge for the Charge Transfer Band in Slags Containing Iron Oxides

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著者

    • HAYASHI Miyuki
    • Department of Metallurgical Engineering, Faculty of Engineering, Tokyo Institute of Technology
    • SUSA Masahiro
    • Department of Metallurgical Engineering, Faculty of Engineering, Tokyo Institute of Technology
    • OKI Toshihiro
    • Department of Metallurgical Engineering, Faculty of Engineering, Tokyo Institute of Technology
    • NAGATA Kazuhiro
    • Department of Metallurgical Engineering, Faculty of Engineering, Tokyo Institute of Technology

抄録

The absorption edge shift for the charge transfer band has been investigated through absorption coefficient measurements on Fe<sub>2</sub>O<sub>3</sub>-CaO-SiO<sub>2</sub>, Fe<sub>2</sub>O<sub>3</sub>-CaO-SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> and Fe<sub>2</sub>O<sub>3</sub>-Na<sub>2</sub>O-SiO<sub>2</sub> slags. The absorption edge was found to move slightly to higher wavelengths with increasing Fe<sub>2</sub>O<sub>3</sub> content, but shifted markedly to higher wavelengths with increasing basicity <i>i.e.</i> (%CaO)/(%SiO<sub>2</sub>) and (%Na<sub>2</sub>O)/(%SiO<sub>2</sub>) ratios and Al<sub>2</sub>O<sub>3</sub> content. This absorption edge shift has been considered from the viewpoint of the ion refractivity of oxygen and it is proposed that the absorption edge shift is associated with changes of the electron donor power of oxygen ions.

収録刊行物

  • ISIJ international

    ISIJ international 37(2), 126-133, 1997-02-15

    The Iron and Steel Institute of Japan

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