Premium
Rapid synthesis of Gd 2 Zr 2 O 7 glass‐ceramics using spark plasma sintering
Author(s) -
Shu Xiaoyan,
Chen Shunzhang,
Hou Chenxi,
Xie Yi,
Zhang Haibin,
Li Bingsheng,
Yang Yushan,
Wang Xiaoqiang,
Li Linyan,
Lu Xirui
Publication year - 2020
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.16658
Subject(s) - spark plasma sintering , materials science , sintering , ceramic , amorphous solid , phase (matter) , raman spectroscopy , transmission electron microscopy , glass ceramic , analytical chemistry (journal) , composite material , mineralogy , crystallography , nanotechnology , optics , chemistry , physics , organic chemistry , chromatography
Glass‐ceramics are possible host matrix for high level waste immobilization. The Gd 2 Zr 2 O 7 glass‐ceramic matrix was successfully synthesized using spark plasma sintering (SPS) method in 5 minutes. The phase transition with sintering temperature was studied using X‐ray diffraction, Raman and transmission electron microscopy. It revealed that samples kept a main defected fluorite phase as being sintered below 1800°C. Glass phase increased rapidly beyond 1850°C. The amorphous structure became the main body at 1900°C, with nanoscale crystal scattered in the bulk. With the increase of glass phase, the grain boundary became almost indistinguishable. The relationship between the final phase of Gd 2 Zr 2 O 7 with its synthetic temperature range and corresponding technology was reviewed. Gd 2 Zr 2 O 7 glass‐ceramics could be acquired by extending the sintering temperature beyond 1850°C using SPS method.