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Direct Observation of the Crystallization of Li 2 O‐Al 2 O 3 ‐SiO 2 Glasses Containing TiO 2
Author(s) -
DOHERTY P. E.,
LEE D. W.,
DAVIS R. S.
Publication year - 1967
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.1151-2916.1967.tb15043.x
Subject(s) - crystallization , nucleation , materials science , transmission electron microscopy , titanium , glass ceramic , phase (matter) , chemical engineering , mineralogy , ceramic , composite material , metallurgy , nanotechnology , chemistry , engineering , organic chemistry
The nucleation and crystallization of Li 2 O‐Al 2 O 3 ‐SiO 2 glasses containing TiO 2 were investigated using transmission electron microscopy of thin sections produced from bulk samples. Phase separation occurs during cooling from the melt, and on heating, a large number of titanium‐aluminum crystals approximately 50 A in diameter are formed. These crystals are the heterogeneous nuclei for the crystallization of the remaining glass. Photomicrographs of various stages of crystallization show the development of the fine‐grained glass‐ceramic.