An innovative approach to develop highly performant chalcogenide glasses and glass-ceramics transparent in the infrared range

Abstract

An innovative way to produce chalcogenide glasses and glass-ceramics for infrared devices is reported. This new method of synthesis at low temperature combining ball-milling and sintering by SPS (Spark Plasma Sintering) is a technological breakthrough to produce efficient infrared chalcogenide glasses and glass-ceramics. This technique will offer the possibility to strongly decrease the cost of infrared devices and to produce new chalcogenide glasses. It will also permit to increase the potential of some glass compositions by allowing their shaping at desired dimensions.

Te-As-Se glass destabilization using high energy milling

“…The densification was calculated from the theoretical glass density (4,88). Even if a densification of 99% has been determined, the presence of carbon particles of hundreds of microns in the samples may explain the significant MIE scattering, phenomena already observed by Hubert et al [8].…”

“…The possibility to mix and get amorphous alloys is commonly used to obtain metallic glasses [6][7]. This process has already been investigated in germanium based chalcogenide glasses [8][9]. Then, coupled to the mechanical synthesis, flash sintering using Spark Plasma Sintering (SPS) will be used to compact and mold the glass powder.…”

Transparent chalcogenide glass-ceramics

“…In a recent work, Hubert et al (2011) report an innovative approach for making transparent chalcogenide glasses and glass-ceramics. The combination of amorphization by mechanical milling and densification by spark plasma sintering (SPS) was described.…”

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].…”