We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Glass Formation and Properties of Chalcogenides in a GeSe<sub>2</sub>–As<sub>2</sub>Se<sub>3</sub>–PbSe System.
- Authors
Yang, Guang; Zhang, Xianghua; Ren, Jing; Yunxia, Yang; Chen, Guorong; Ma, Hongli; Adam, J. L.
- Abstract
The glass-forming region in a GeSe2–As2Se3–PbSe system was determined, and the dependence of properties on the composition as a formula of 20 GeSe2–(80− x)As2Se3− xPbSe ( x=0–30) was investigated. Measurements include density, differential scanning calorimetry, X-ray diffraction, Vis-NIR, and IR transmission spectra. A fairly large glass-forming region was obtained where the higher lead content could be introduced into the system in the As2Se3-rich region than in the GeSe2-rich region. With the introduction of PbSe, the density of glass increased and the calculated molar volume decreased while the crystallization tendency increased, which was indicated by the decreasing Δ T ( Tx− Tg). The activation energy of crystallization and the Avrami exponents were also obtained using the modified Ozawa equation. Under proper annealing conditions, suitable IR transmittance glass–ceramics were obtained.
- Subjects
CHALCOGENIDES; GERMANIUM compounds; X-ray diffraction; INFRARED spectroscopy; CALORIMETRY; CRYSTALLIZATION
- Publication
Journal of the American Ceramic Society, 2007, Vol 90, Issue 5, p1500
- ISSN
0002-7820
- Publication type
Article
- DOI
10.1111/j.1551-2916.2007.01562.x