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SECONDARY EXPANSION OF HIGH‐ALUMINA REFRACTORIES *
Author(s) -
Hall James L.
Publication year - 1941
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.1151-2916.1941.tb15440.x
Subject(s) - bauxite , grog , calcination , shrinkage , diaspore (botany) , materials science , raw material , metallurgy , mineralogy , composite material , geology , chemistry , biochemistry , demography , organic chemistry , seed dispersal , sociology , biological dispersal , population , catalysis
A bstract Several mixtures of raw and calcined diaspore and bauxite with raw and calcined fire clays were prepared and fired at 2700°F. Specimens were refired at higher temperatures, and the linear changes were determined. Bodies composed of high‐alumina grog and fire clay expand in the refire, whereas specimens of fire‐clay grog that are bonded with ground raw diaspore exhibit shrinkage. The cause of the secondary expansion and shrinkage of these bodies is discussed.