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Phase Diagram, Short‐Range Structure, and Amorphous Phases in the ZrO 2 ‐GeO 2 (‐H 2 O) System
Author(s) -
Karlin Sacha,
Colomban Philippe
Publication year - 1999
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/j.1151-2916.1999.tb01825.x
Subject(s) - thermogravimetric analysis , phase diagram , zirconium , differential thermal analysis , phase (matter) , materials science , analytical chemistry (journal) , amorphous solid , raman spectroscopy , range (aeronautics) , thermal analysis , atmospheric temperature range , germanium , mineralogy , crystallography , chemistry , thermal , thermodynamics , optics , diffraction , metallurgy , silicon , composite material , physics , organic chemistry , chromatography
Gels of the ZrO 2 ‐GeO 2 (‐H 2 O) system have been prepared via the hydrolysis‐polycondensation of zirconium and germanium isopropoxides. Phase relationships have been deduced from differential thermal analysis, thermogravimetric analysis, and shrinkage analysis and are discussed on the basis of X‐ray diffractometry and Raman scattering studies. Emphasis has been given to understanding the short‐range structure. A small glass‐forming domain is observed in the temperature range of 600°−700°C for compositions of 30–40 mol% GeO 2 .