Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
XPS Study of CaO in Sodium Silicate Glass
This paper shows that CaO added to silicate glasses behaves much like Na sub 2 O in converting bridging oxygen sites to nonbridging sites. Good correspondence with model predictions was obtained but deviations were still sufficiently large to warrant attention. We speculate that some CaO may remain unreacted or that small-scale phase separation may occur. XPS core level shifts were monitored and possible charge-transfer effects were considered. Preliminary theoretical calculations utilizing a molecular-cluster approach were presented. XPS spectra for various glass compositions were simulated by appropriately combining local densities of state calculated for individual atoms. Dominant spectral features observed experimentally were found in the simulations. In conjunction with experiments, more carefully refined calculations will be subsequently examined. 7 figures. (ERA citation 08:024030)
XPS Study of CaO in Sodium Silicate Glass
This paper shows that CaO added to silicate glasses behaves much like Na sub 2 O in converting bridging oxygen sites to nonbridging sites. Good correspondence with model predictions was obtained but deviations were still sufficiently large to warrant attention. We speculate that some CaO may remain unreacted or that small-scale phase separation may occur. XPS core level shifts were monitored and possible charge-transfer effects were considered. Preliminary theoretical calculations utilizing a molecular-cluster approach were presented. XPS spectra for various glass compositions were simulated by appropriately combining local densities of state calculated for individual atoms. Dominant spectral features observed experimentally were found in the simulations. In conjunction with experiments, more carefully refined calculations will be subsequently examined. 7 figures. (ERA citation 08:024030)
XPS Study of CaO in Sodium Silicate Glass
B. W. Veal (Autor:in) / D. J. Lam (Autor:in) / A. P. Paulikas (Autor:in) / W. Y. Ching (Autor:in)
1981
17 pages
Report
Keine Angabe
Englisch
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