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EFFECT OF SODIUM ALUMINATE ON THE THERMAL EXPANSION OF REFRACTORY CLAY BODIES *
Author(s) -
Morgan W. R.
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.tb19432.x
Subject(s) - cristobalite , thermal expansion , sodium aluminate , aluminate , sodium , mineralogy , tridymite , chemistry , refractory (planetary science) , materials science , metallurgy , aluminium , quartz , cement
A bstract Additions of 2% sodium aluminates to highly siliceous clay‐flint bodies fired at cones 13 to 14 appreciably decreased but did not eliminate the cristobalite expansion. A second firing at the same temperature increased the cristobalite expansion, compared with that produced in the first firing, but the expansion in both cases was less than that of the body without the addition of sodium aluminates. A similar addition made to Missouri semiflint clay increased the cristobalite expansion after one firing but decreased it after a second firing, compared, in both cases, with the expansion of the body to which no sodium aluminate had been added.