Synthesis of GeSe₄glass by mechanical alloying and sintering

Abstract

The possibility to synthesize GeSe4 glass by mechanical alloying followed by sintering has been demonstrated. X-ray diffraction (XRD) and differential scanning calorimetry (DSC) analysis have been performed on the powder as a function of milling duration in order to follow the amorphization process of raw metallic germanium and selenium elements. Completely amorphous powder has been sintered using a homemade hot press. Optical transmission and the density of the final bulk material have been studied.

Amorphization by Mechanical Milling for Making IR Transparent Glass‐Ceramics

“…The progressive increase in the T g is directly linked to the progressive incorporation of germanium within the glassy network. This phenomenon has already been demonstrated in a similar system in which the sulfur is replaced by selenium . This low kinetic of reaction can be explained by the high hardness of germanium (6.0 on a Mohs scale), while the selenium can be easily obtained under its amorphous form and the gallium becomes liquid during the processing facilitating its reaction and diffusion.…”

The second-harmonic generation in chalcogenide glass-ceramic doped with CdS nanocrystals

“…The mixture was sintered by hot-pressing (HP) with a home-made equipment [10]. A stainless steel mold with an inner diameter of 20-mm was used.…”

Solid-state amorphization of As 45 S 55 alloy induced by high-energy mechanical milling

“…Interestingly, both crystallization and glass transition temperatures of just-amorphized Ge4Se5 compound show an obvious growing tendency with milling time [10]. Recently, amorphization processes were also studied in some Se alloys used in preparation chalcogenide glasses [11,12].…”