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EFFECTS OF BODY COMPOSITION AND FIRING TREATMENT ON SALT GLAZES 1
Author(s) -
Hufsh R. K.,
Clemens E. C.
Publication year - 1931
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.1151-2916.1931.tb16643.x
Subject(s) - glaze , glazing , oxidizing agent , hematite , impurity , materials science , salt (chemistry) , mineralogy , composition (language) , devitrification , chemical composition , metallurgy , chemistry , crystallization , composite material , ceramic , linguistics , philosophy , organic chemistry
Five synthetic bodies were made up in which the silica, alumina, ferric oxide, and alkalis were varied. Salts were added to these bodies in various amounts; the bodies were dried and fired under carefully controlled conditions and salt glazed under oxidizing conditions at cones 2, 5, and 7 and under reducing conditions at cone 5. The effects of body composition and glazing temperature on the appearance of the bodies are giveu. Reducing conditions during glazing increased the glaze thickness. The maturity of the glaze is more important than the thickness. Devitrification of the glazes is more important than the presence of impurities. Crystals of hematite, acmite, nephelite, and carnegieite were found in the glazes. Firing treatment has a greater influence on glaze character than chemical composition.