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Microstructure and phase composition of the two-phase ceramic synthesized from titanium oxide and zinc oxide

Zeer Galina M. (Siberian Federal University, Krasnoyarsk, Russia)
Zelenkova Elena G. (Siberian Federal University, Krasnoyarsk, Russia)
Nikolaeva Natalia S. (Siberian Federal University, Krasnoyarsk, Russia)
Zharkov Sergey M. (Siberian Federal University, Krasnoyarsk, Russia + Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia)
Abkaryan Artur K. (Siberian Federal University, Krasnoyarsk, Russia)
Mikheev Anatoly A. (Siberian State Aerospace University, Krasnoyarsk, Russia)

We have made investigations of the phase formation and microstructure on the ceramics obtained from a starting nanopowder mixture with the weight ratio ZnO : TiO2 = 4 : 1. Ceramic is obtained at different sintering temperatures, namely, 948, 1223 and 1473 К. Using the characterization methods of electron microscopy, energy dispersive microanalysis and X-ray diffraction phase analysis it has been shown that the ceramics structure is consisted of two dispersed phases of Zn2TiO4 and ZnO with the grain sizes being in range 0,5-1 μm. It has been found also that, at ceramic`s sintering temperature of 1223 К, the solid phase interactions are completed with the structure ZnO : Zn2TiO4 ≈ 1 : 1,5 phase ratio.

Keywords: nanopowders, titanium oxide, zinc oxide, solid phase reaction, ceramic