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CRISTOBALITE FORMATION AS A FACTOR IN FREEZING OF PYROMETRIC CONES *
Author(s) -
Smith Paul Laurens
Publication year - 1939
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.1151-2916.1939.tb19450.x
Subject(s) - devitrification , cristobalite , mineralogy , materials science , chemistry , metallurgy , crystallization , quartz , organic chemistry
A bstract Studies were made of the thermal expansion, X‐ray pattern, and fusion behavior of cones 7 and 8 “frozen” in a commercial kiln. Similar studies were made on specimens heat‐treated in the laboratory, and it is shown that the characteristics of a “frozen” cone may be produced in cones 7 and 8 by proper heat treatment. Evidence is presented which indicates that freezing is due at least in part to the formation of cristobal‐ite by devitrification.