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An x-ray photoelectron spectroscopic study of the chemical states of fluorine atoms in calcium silicate glasses

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Abstract

X-ray photoelectron spectroscopy has been used to examine the chemical states of fluorine in the glasses of composition xCaF2(50 – x)CaO · 50SiO2 (x = 5, 10, 15, 20, and 25 mol %) and xCaF2(50 – x/2)CaO(50 – x/2)SiO2 (x = 5, 10, 15, and 20 mol %). The analysis of the F1s spectra indicated that Ca2+ and F- ions introduced as CaF2 are favorably located among the Si–O skeleton forming Ca–F clusters. The fraction of the bridging and nonbridging oxygen atoms was derived from the O1s spectra, and the network of the fluorine-containing glasses was concluded to depend only on the ratio CaO/SiO2.

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Authors and Affiliations

  1. Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University, Tsushima, Okayama-shi, 700, Japan

    Satoshi Hayakawa, Akira Nakao, Chikara Ohtsutki & Akiyoshi Osaka

  2. Department of Environmental Chemistry and Materials, Faculty of Environmental Science and Technology, Okayama University, Tsushima, Okayama-shi, 700, Japan

    Shuji Matsumoto & Yoshinari Miura

Authors
  1. Satoshi Hayakawa
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  2. Akira Nakao
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  3. Chikara Ohtsutki
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  4. Akiyoshi Osaka
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  5. Shuji Matsumoto
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  6. Yoshinari Miura
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Hayakawa, S., Nakao, A., Ohtsutki, C. et al. An x-ray photoelectron spectroscopic study of the chemical states of fluorine atoms in calcium silicate glasses. Journal of Materials Research 13, 739–743 (1998). https://doi.org/10.1557/JMR.1998.0093

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  • DOI: https://doi.org/10.1557/JMR.1998.0093

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