Glass formation in the As–Te–Sb system

Chalcogenide glasses from the As–Te–Sb system were synthesized for the first time. The glass-forming region was determined by the help of visual, X-ray diffraction and electron microscopic analyses. Glasses are obtained mainly in the Te-rich region of the Gibbs diagram. The basic physicochemical par...

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Bibliographic Details
Published in:Materials chemistry and physics 2007-09, Vol.105 (1), p.53-57
Main Authors: Vassilev, V., Parvanov, S., Hristova-Vasileva, T., Parvanova, V., Ranova, D.
Format: Article
Language:English
Subjects:
Chalcogenides
Glasses
Sintering
Thermal properties
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Summary:Chalcogenide glasses from the As–Te–Sb system were synthesized for the first time. The glass-forming region was determined by the help of visual, X-ray diffraction and electron microscopic analyses. Glasses are obtained mainly in the Te-rich region of the Gibbs diagram. The basic physicochemical parameters such as density ( d), microhardness (HV) and temperatures of phase transformations (the glass transition T g, crystallization T cr and melting T m) were measured. Compactness and some thermomechanical characteristics such as volume ( V h) and formation energy ( E h) of micro-voids in the glassy network as well as the module of elasticity were calculated. The glass-forming ability was evaluated according to Hruby's criteria ( K G). The correlation between composition and properties of the As–Te–Sb glasses was established and comprehensively discussed.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2007.04.023