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NOTE ON THE ACID RESISTANCE OF ENAMELED COOKING UTENSILS 1
Author(s) -
Swesly B. T.
Publication year - 1921
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.1151-2916.1921.tb18671.x
Subject(s) - enamel paint , volatilisation , resistance (ecology) , chemistry , materials science , mineralogy , composite material , organic chemistry , ecology , biology
Apparent segregation of the constituents of an enamel under the influence of gravitation. —Experiments with trial pieces with poured samples, and with enameled ware of various mfgr's. showed that the surface of the layer of enamel which is uppermost during firing and cooling is readily attacked by acid, thus indicating, apparently, that the more soluble materials tend to rise to the top of the melt. It is therefore recommended that enameled kitchen utensils be fired in an inverted position. In the discussion by Bryan A. Rice a series of similar experiments are described using small shallow cups. Quantitative tests failed to show any difference in acid resistance and it is suggested that the author's results were due to the nature of the gases in contact with the enamel surface or to volatilization. In his reply the author accepts this explanation of his results.