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Article Dans Une Revue Journal of the American Ceramic Society Année : 2008

Optical and Mechanical Properties of Glasses and Glass-Ceramics Based on the Ge-Ga-Se System

Résumé

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.

Domaines

Matériaux

Dates et versions

hal-00862551 , version 1 (17-09-2013)

Identifiants

Citer

Mathieu Rozé, Laurent Calvez, Yannick Ledemi, Mathieu Allix, Guy Matzen, et al.. Optical and Mechanical Properties of Glasses and Glass-Ceramics Based on the Ge-Ga-Se System. Journal of the American Ceramic Society, 2008, 91 (11), pp.3566-3570. ⟨10.1111/j.1551-2916.2008.02684.x⟩. ⟨hal-00862551⟩
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