Optical and mechanical properties of far infrared transmitting glass–ceramics

Controlled crystallization in Ge-(Sb/Ga)-(S/Se)-MX glasses for infrared applications

“…21) In fact, the crystallization of alkali halide phases does not compensate the decrease of mechanical properties when introducing increasing amount of alkali halides in the base glass.…”

Thermal analysis of RbI crystallization in the GeSe2–Sb2Se3–RbI system

“…The technique to observe sub-micron crystals and the methods used to calculate the hardness and the toughness were described elsewhere [12]. The flash-laser method was used on 16 mm diameter and 2 mm thickness glass and glass-ceramics sample with a surface precision of k/4 to measure thermal diffusivity.…”

Transparent chalcogenide glass-ceramics

“…An adequate heat treatment of a selected glass composition has led to the generation of a significant proportion of quasi alkali halide microcrystals in chalcogenide glassy matrix, which allows an improvement of mechanical properties, especially an increase of the resistance to fracture propagation (Zhu et al, 2007) which should provide a better resistance to thermal shocks.…”

“…10.5). 10.10 Evolution of the fracture toughness (Kc) and critical load for crack initiation (Pc) of the 62.5GeS 2 -12.5Sb 2 S 3 -25CsCl glass-ceramics (heat treatment at T g + 30°C) (Zhu et al, 2007).…”