Open AccessSynthesis and characterization of monophase CaO-TiO2-SiO2 (sphene) based glass-ceramics
Author(s) -
Jelena Maletaškić,
Bratislav Ž. Todorović,
Martina Gilić,
Milena MarinovićCincović,
Kazuo Yoshida,
Anna V. Gubarevich,
Branko Matović
Publication year - 2020
Publication title -
science of sintering/science of sintering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.309
H-Index - 25
eISSN - 1820-7413
pISSN - 0350-820X
DOI - 10.2298/sos2001041m
Subject(s) - materials science , ceramic , scanning electron microscope , powder diffraction , raman spectroscopy , glass ceramic , thermal analysis , chemical engineering , phase (matter) , mineralogy , metallurgy , thermal , nuclear chemistry , crystallography , composite material , chemistry , organic chemistry , physics , meteorology , optics , engineering
Sphene based glass-ceramics (CaTiSiO5), an excellent candidate for a host lattice of ceramic materials and for nuclear waste immobilization, has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization. Starting powders were melted at 1400?C for 2 h, cooled to room temperature, grounded again, then crystallized by thermal treatment yielding a sphene glass-ceramic. The evolution of the phase composition during thermal treatment was investigated by X-ray powder diffraction (XRPD), FT-IR, Raman and thermal analyses (TG-DTA). Pure synthetic single phase sphene was formed at 800?C for 4 h, even it is very hard to obtain monophase powder at such low temperature. Powder morphology was analyzed by scanning electron microscopy (SEM).