INDUSTRIAL CERAMICS, cilt.27, sa.2, ss.89-94, 2007 (SCI-Expanded)
The possibility to obtain a cheap ceramic material based on 50 wt % basaltic
tuffs and 50 wt % industrial clays was studied. The tuffs were characterized by
optical microscopy, X-ray diffraction and differential thermal analysis. It was
shown that this material is appropriate for the ceramic industry: it is easy for
milling and is characterized by low liquidus temperature. The sintering behaviour
of the ceramic was evaluated by hot-stage microscopy and dilatometry. The
structure of samples, heat-treated at different temperatures, were observed by
scanning electron microscopy while the densification degree was evaluated by
dry flow and gas pycnometery. Samples with 13% total porosi