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EFFECTS OF SOME ELECTROLYTES ON COLOR VALUE OF ENAMELS MADE FROM A STANDARD TITANIA‐OPACIFIED FRIT *
Author(s) -
Marbaker Edward E.,
Saunders Hollis S.,
Baumer Leon N.
Publication year - 1949
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.1151-2916.1949.tb18967.x
Subject(s) - frit , electrolyte , materials science , mineralogy , metallurgy , composite material , chemistry , electrode
A bstract Just as the properties of titania enamels are influenced by the clay used as the suspending agent in slip preparation, so it was thought that the salts used as electrolytes might also have effects of a similar nature. Six salts, KCl, K 2 CO 3 , NaAlO 2 , NaNO 2 , MgCO 3 , and KNO 3 , more or less commonly used as electrolytes for setting up titania enamels, were employed singly and in combinations of two and three in the preparation of 25 slips made from a standard frit. The clay content was 4%, and the milling conditions were constant. Slips, therefore, that varied in electrolyte content only were sprayed on ground‐coated steel plates, which were then fired uniformly. The set of the slips was determined by means of the Irwin slump test and the Brookfield viscometer. The reflectance, color value, finish, and acid resistance of the enamels were found by standard methods. The results showed that electrolytes have much more effect on enamel properties than has commonly been supposed and that, in the preparation of enamels, not only the quality of the frit but the properties of the components of the mill addition, clay and electrolyte alike, merit careful consideration in order to achieve the best possible results.