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

Abstract

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 ?. 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 ?m. It has been found also that, at ceramic`s sintering temperature of 1223 ?, the solid phase interactions are completed with the structure ZnO : Zn2TiO4 ? 1 : 1,5 phase ratio.