New chalcogenide glasses in the GeSe2-Sb2Se3-PbSe system

作者：Vassilev V^*; Tomova K; Parvanova V; Parvanov S

来源：Materials Chemistry and Physics, 2007, 103(2-3): 312-317.

DOI：10.1016/j.matchemphys.2007.02.033

• chalcogenide glasses
• glass-forming region
• physico-chemical properties

Chalcogenide glasses from the GeSe2-Sb2Se3-PbSe system were synthesized for the first time. The glass-forming region was determinated by the help of visual, X-ray diffraction and electron microscopic analyses.
The basic physico-chemical parameters such as density (d), microhardness (HV) and the 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 E were calculated. The overall mean bond energy (E), the mean coordination number (Z), the mean bond energy of the average cross-linking/atom and the average bond energy per atom of the "remaining matrix", (E) over bar (c) and (E) over bar (rm), as well as the average heteropolar bond energy E-hb, the degree of "cross-linking/atom" P-p and the molar volume V-m were determinated.

• 出版日期2007-6-15
• 单位北京化工大学