Synthesis and characterization of monophase CaO-TiO2-SiO2 (sphene) based glass-ceramics

  • Jelena Maletaškić Institute of Nuclear Sciences Vinča, Department of Material Science, Center of Excellence, CEXTREME LAB University of Belgrade; Laboratory for Advanced Nuclear Energy, Institute of Inovative Research, Tokyo Institute of Technology
  • Bratislav Todorović Faculty of Technology, University of Niš
  • Martina Gilić Institute of Physics, University of Belgrade
  • Milena Marinović Cincović Institute of Nuclear Sciences Vinča, Laboratory for Radiation Chemistry and Physics, University of Belgrade
  • Katsumi Yoshida Laboratory for Advanced Nuclear Energy, Institute of Inovative Research, Tokyo Institute of Technology
  • Anna Gubarevich Laboratory for Advanced Nuclear Energy, Institute of Inovative Research, Tokyo Institute of Technology
  • Branko Matović Institute of Nuclear Sciences Vinča, Department of Material Science, Center of Excellence, CEXTREME LAB University of Belgrade

Abstract

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).

Published
2020-02-23
Issue
Vol 52 No 1 (2020)
Section
Articles

Copyright 

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