Vol 7, No 3 (2016) > Metalurgy and Material Engineering >

Densification Behavior of SnO2-Glass Composites Developed from the Incorporate of Silica Xerogeland SnO2

H. Aripin, Seitaro Mitsudo, I Nyoman Sudiana, Edvin Priatna, Hikamitsu Kikuchi, Svilen Sabchevski


Abstract: In
this investigation, SnO2-glass composites were produced by mixing SnO2 and amorphous silica
xerogel (SX) extracted from sago waste ash. The composition was prepared by
adding 5 mol% of SnO2 into SX; the samples were dry pressed and
sintered in a temperature range between room temperature and 1500oC.
Their properties were
characterized on the basis of the experimental data obtained using Archimedes’
principle, X-ray diffraction (XRD), Fourier transformed infra-red (FTIR), and a scanning electron microscopy (SEM). It was
found that the bulk density increased along with the sintering temperature. In
the temperature range from 1300oC to 1500oC, the glass
ceramic reached a bulk density of about 2.5 g/cm3. The results of
the interpretation of XRD patterns, FTIR spectra, and SEM images allow us to conclude
that this increase in density was due to an increased degree of crystallinity
of SnO2 in the silica xerogel composite.
Keywords: Amorphous silica xerogel; Density; Glass composite; Sintering temperature; SnO2

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