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EFFECT OF HEAT TREATMENT ON THE THERMAL EXPANSION OF SOME SILICA‐ALUMINA GLASSES *
Author(s) -
Thompson C. L.,
Parmelee C. W.
Publication year - 1937
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.1151-2916.1937.tb19907.x
Subject(s) - tridymite , mullite , cristobalite , materials science , crystallization , quartz , thermal expansion , mineralogy , composite material , thermal treatment , thermal , phase (matter) , chemical engineering , chemistry , thermodynamics , ceramic , physics , organic chemistry , engineering
A bstract Glasses made from Florida kaolin and quartz so that the compositions lie in the field in which mullite is the primary phase showed characteristic changes in their thermal expansion when heated. These may be due in part to stresses in the glass and in part to the crystallization of submicroscopic mullite. Cristobalite or tridymite also crystallized from the glasses when they were heated to 1230°C.