Publikace detail

The behaviour of Bi2O3 in ternary phosphate glasses

Rok: 2007

Druh publikace: článek ve sborníku

Název zdroje: ICG 2007: XXIst International Congress on Glass

Název nakladatele: The International Commission on Glass

Místo vydání: Strasbourg

Strana od-do: A22

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
cze	Chování Bi2O3 ve fosforečnanových sklech	Byla připravena a studována skla systémů ZnO-Bi2O3-P2O5, BaO-Bi2O3-P2O5 a PbO-Bi2O3-P2O5 v kompozičních řadách 50MO-xBi2O3-(50-x)P2O5 a (50-y)MO-yBi2O3-50P2O5.
eng	The behaviour of Bi2O3 in ternary phosphate glasses	ZnO-Bi2O3-P2O5, BaO-Bi2O3-P2O5, and PbO-Bi2O3-P2O5 glasses were prepared and studied in compositional series 50MO-xBi2O3-(50-x)P2O5 and (50-y)MO-yBi2O3-50P2O5. Relatively large differences between ZnO- BaO- and PbO-based glasses were observed in their thermal behaviour. Structural studies by Raman spectroscopy revealed a gradual depolymerisation of phosphate network from metaphosphate (Q2) to diphosphate (Q1) units with increasing MO content. In the compositional series 50MO xBi2O3-(50-x)P2O5 structural changes are more pronounced than in the latter series and in the Bi2O3-rich ZnO-based glasses isolated PO4 units (Q0) were identified. The results of 31P MAS NMR spectra measurements are in a good agreement with the Raman spectra measurements.	Phosphate, Glasses, Structure, Properties

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