Journal
CERAMICS INTERNATIONAL
Volume 38, Issue 3, Pages 2005-2010Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2011.10.035
Keywords
Sintering; Glass-ceramic foam; Diopside
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Foaming and crystallisation behaviours of compacted glass powders based on a diopside glass-ceramic composition were investigated using the sintering route. The foaming agent was 2 wt.% SiC particles. The effect of PbO on the foaming ability of glasses was investigated. The results showed that the addition of PbO not only improved the foaming ability, by improving the wettability of the glass-SiC particles but also increased the crystallisation temperature and widened the temperature interval between the dilatometric softening point and the onset of crystallisation. The glass SiC wetting angle was decreased from 85 degrees for the lead-free glass, to 55 degrees for the glass that contains 15 wt.% PbO. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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