X-RAY INVESTIGATION OF THE OPACIFYING COMPOUNDS PRESENT IN SHEET-IRON COVER ENAMELS* |
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| Authors: | Andrew I. Andrews J. P. Breen |
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| Affiliation: | Department of Ceramic Engineering University of Illinois Urbana, Illinois |
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| Abstract: | ![]()
By the use of X-ray methods, sheet-iron cover-enamel frits and fired enamels were investigated. The results obtained show that tin oxide exists as tin dioxide in the enamel, antimony as antimony pentoxide, fluorspar as calcium fluoride, and cryolite as sodium fluoride. Zirconium oxide does not exist as the crystalline zirconium oxide even when present as a mill addition. Variations in the compositions of the ordinary sheet-iron cover enamels do not affect the identity of the crystals. |
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