Micro-crystallization of the infrared transmitting chalcogenide glass in GeSe2-As2Se3-PbSe system

Hua Wang (1) , Xianghua Zhang (2) , Guang Yang (1) , Yinsheng Xu (1) , Hongli Ma (2) , Jean-Luc Adam (2) , Zhen'An Gu (1) , Guorong Chen (1)

1 Key Laboratory for Ultrafine Materials
2 ISCR - Institut des Sciences Chimiques de Rennes

Micro-crystallization of the chalcogenide glass 40GeSe2-50As2Se3-10PbSe has been studied in order to obtain infrared transmitting glass ceramics. Differential scanning calorimetry, IR transmission spectroscopy, X-ray diffraction, scanning electronic microscopy and thermal dilatancy have been used for characterizing the crystallization process. Performing thermal treatment on the glass sample at 250 °C (40 °C higher than Tg) for 10 h, we obtained a glass ceramic containing well-dispersed micro-crystals (<50 nm) and the obviously decreased thermal expansion coefficient.

Mots clés: D. Glass ceramics; Micro-crystallization; Chalcogenide glass

Domaines: Matériaux

Hua Wang, Xianghua Zhang, Guang Yang, Yinsheng Xu, Hongli Ma, et al.. Micro-crystallization of the infrared transmitting chalcogenide glass in GeSe2-As2Se3-PbSe system. Ceramics International, 2009, 35 (1), pp.83-86. ⟨10.1016/j.ceramint.2007.09.115⟩. ⟨hal-00411496⟩