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Transformation Range Behavior of Lithium Galliosilicate Glasses
Author(s) -
PIGUET JOYCE L.,
LAPP JOSEF C.,
SHELBY JAMES E.
Publication year - 1985
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.1151-2916.1985.tb15234.x
Subject(s) - lithium (medication) , thermal expansion , materials science , softening , softening point , gallium , atmospheric temperature range , thermodynamics , transformation (genetics) , silicate , silicate glass , viscosity , phase (matter) , mineralogy , composite material , metallurgy , chemistry , medicine , physics , gene , endocrinology , biochemistry , organic chemistry
The transformation range viscosity and thermal expansion behavior of lithium galliosilicate glasses were studied. The glass transformation and dilatometric softening temperatures exhibit maxima at gallium to lithium ratios of somewhat greater than one. Similar behavior was observed for the transformation range viscosity. The effect of phase separation on the dilatometric softening temperature is discussed in detail. These results are compared with those obtained for lithium alumino‐silicate glasses in other studies. The results are discussed in terms of the structural role of aluminum and gallium in the glass network.