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

Satoshi Hayakawa, Akira Nakao, Chikara Ohtsutki, Akiyoshi Osaka, Shuji Matsumoto, Yoshinari Miura

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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.

Original languageEnglish
Pages (from-to)739-743
Number of pages5
JournalJournal of Materials Research
Volume13
Issue number3
DOIs
Publication statusPublished - Mar 1998

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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