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Amorphization by Mechanical Milling for Making IR Transparent Glass‐Ceramics
Author(s) -
Xue Bai,
Calvez Laurent,
Allix Mathieu,
Delaizir Gaëlle,
Zhang XiangHua
Publication year - 2016
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.14150
Subject(s) - materials science , spark plasma sintering , amorphous solid , ceramic , pellets , chalcogenide glass , glass transition , chalcogenide , sintering , hot pressing , composite material , graphite , diffraction , transparent ceramics , nanocrystal , amorphous metal , metallurgy , nanotechnology , crystallography , optics , polymer , alloy , chemistry , physics
In this article, we put forward the possibility to prepare amorphous powder from chalcogenide compositions usually located out of the glassy domain when synthesized via a conventional melt‐quenching technique. Both X‐ray diffraction and DSC techniques were used to demonstrate that the original Ge 15 Ga 20 S 65 composition can be prepared in the amorphous state by using mechanical milling starting from raw metallic elements. Subsequent hot‐pressing by spark plasma sintering in a graphite die above the glass transition temperature leads to sintered pellets presenting a high rate of nanocrystals of about 30 nm. These as‐made glass–ceramic materials present promising transparency in the infrared range.