B. Dunn—contributing editor
Optical and Mechanical Properties of Glasses and Glass–Ceramics Based on the Ge–Ga–Se System
Article first published online: 18 SEP 2008
© 2008 The American Ceramic Society
Journal of the American Ceramic Society
Volume 91, Issue 11, pages 3566–3570, November 2008
How to Cite
Rozé, M., Calvez, L., Ledemi, Y., Allix, M., Matzen, G. and Zhang, X.-H. (2008), Optical and Mechanical Properties of Glasses and Glass–Ceramics Based on the Ge–Ga–Se System. Journal of the American Ceramic Society, 91: 3566–3570. doi: 10.1111/j.1551-2916.2008.02684.x
This work was supported by the French Délégation Générale pour l'Armement (DGA).
†Author to whom correspondence should be addressed. e-mail: email@example.com
- Issue published online: 24 NOV 2008
- Article first published online: 18 SEP 2008
- Manuscript No. 24780. Received May 27, 2008; approved July 28, 2008.
In this paper, the mechanical and thermo-mechanical properties of glasses and glass–ceramics belonging to the Ge–Ga–Se system are studied. Pure glasses slightly transparent in the visible range up to 16 μm have been synthesized. Glass–ceramics were made using an appropriate heat-treatment time and temperature from the 80GeSe2–20Ga2Se3 base glass in order to improve the mechanical properties. The optical and mechanical properties of glasses and glass–ceramics such as hardness and toughness were investigated. X-ray diffraction (XRD) versus temperature experiments were performed to understand the crystallization evolution as a function of heat-treatment time. GeGa4Se8 and GeSe2 crystalline phases have been determined with XRD. As a result, glass–ceramics with 40% density of crystals present a very low thermal expansion coefficient (11.8 × 10−6± 0.5 K−1) and an excellent infrared transmission in the 3–5 and 8–13 μm regions.