Inhibition of Pb-Leaching from Lead Crystal Glass by Coating with Films Prepared by the Sol-Gel Method |
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| Authors: | A.A. Ahmed I.M. Youssof A.F. Abbas O. Abou Eleinen |
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| Affiliation: | (1) Glass Research Laboratory, National Research Center, Dokki, Cairo, 12622, Egypt;(2) Petroleum Applications Department, Petroleum Research Institute, Nasr City, Cairo, Egypt |
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| Abstract: | The chemical durability of lead glass tumblers (24% PbO) in a 4% (v/v) acetic acid solution before and after coating with sol-gel derived SiO2 films was assessed to determine the extent of reduction in Pb-leaching that can be achieved. It was found that by coating the internal surface of the glass tumblers with 1 ml of 10% TEOS solutions at 100°C and densifying the coating formed at 500°C for 1 h, it was possible to reduce Pb-leaching to about one quarter of that of the uncoated glass. |
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| Keywords: | lead crystal glass sol-gel coating lead leaching durability improvement |
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