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Effects of Preparation History on TiO 2 · SiO 2 Glasses
Author(s) -
Bihuniak P. P.,
Condrate R. A.
Publication year - 1981
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.1151-2916.1981.tb09908.x
Subject(s) - rutile , anatase , cristobalite , materials science , raman spectroscopy , mineralogy , silica glass , thermal , chemical engineering , analytical chemistry (journal) , composite material , thermodynamics , chemistry , optics , quartz , biochemistry , physics , chromatography , photocatalysis , engineering , catalysis
Differences in the Raman spectra of various heat‐treated TiO 2 · SiO 2 glasses could be related to their thermal and chemical histories. For instance, while rutile could be detected in batch‐prepared glasses heated at 1100°C, only α‐cristobalite could be detected in heat‐treated devitrified flame‐prepared glasses with comparative TiO 2 ‐concentrations. Thermal expansion coefficients increased for batch‐prepared glasses upon heat treatment due to exsolution of rutile from the glasses. Earlier work had noted similar behavior at lower temperatures due to exsolution of anatase.