Structural and Thermophysical Properties of (PbO)^sub 0.5^(SiO^sub 2^)^sub 0.5^ Glasses: Effect of SnO^sub 2^ Incorporation

...Sn and ...Si solid-state nuclear magnetic resonance studies on lead silicate glasses containing different amounts of SnO... confirmed that tin exists in the glass as distorted SnO... polyhedra and there is no direct interaction between tin and silicon structural units. Transmission electron micro...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2008-03, Vol.91 (3), p.986
Main Authors: Goswami, Madhumita, Sudarsan, Vasanthakumaran, Shrikhande, Vilas K, Kothiyal, Govind P, Kulshreshtha, Shailendra K
Format: Article
Language:English
Subjects:
Glass
NMR
Nuclear magnetic resonance
Physical properties
Polyhedra
Silica
Tin
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Summary:...Sn and ...Si solid-state nuclear magnetic resonance studies on lead silicate glasses containing different amounts of SnO... confirmed that tin exists in the glass as distorted SnO... polyhedra and there is no direct interaction between tin and silicon structural units. Transmission electron microscopic studies have established that tin structural units are uniformly distributed in the glass. Significant changes in the values of glass transition temperature, microhardness, and thermal expansion coefficient with SnO... incorporation into the glass have been attributed to the increased rigidity of the glass network brought about by the replacement of weaker Pb-O linkages with stronger Sn-O linkages. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0002-7820
1551-2916