Infrared Emission Spectra of CaF2–CaO–SiO2 Melt

Shigeru Ueda; Hirotaka Koyo; Takashi Ikeda; Yoshiharu Kariya; Masafumi Maeda

doi:10.2355/isijinternational.40.739

Infrared Emission Spectra of CaF₂–CaO–SiO₂ Melt

Shigeru Ueda, Hirotaka Koyo, Takashi Ikeda, Yoshiharu Kariya, Masafumi Maeda

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Keywords: FT-IR, Hot filament technique, CaF₂–CaO–SiO₂ system, density functional theory

JOURNAL FREE ACCESS

2000 Volume 40 Issue 8 Pages 739-743

DOI https://doi.org/10.2355/isijinternational.40.739

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Abstract

The infrared emission spectra of CaF₂–CaO–SiO₂ melt were investigated by a method combining infrared emission spectroscopy and the hot-filament technique. Emission for spectra related to Si–O bond can be observed by this in situ technique. The influence of SiO₂ and fluoride content on the spectrum was investigated, and the emission attributable to bonds corresponding to siliconbridging oxygen and silicon-non bridg-ingoxygen was discussed. Results suggest that fluoride ion dominantly substitutes for a non-bridging bond in low SiO₂ concentration region. The structure of silicate was compared with calculated infrared emission of Si–F–O.

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