Influence of mechanical activation on the kinetic features of SrZrO3 formation

Abstract

Strontium zirconate SrZrO3 has been synthesized via heating of equimolar mixture of SrCO3 and ZrO2 at 900–1050°C with and without preliminary mechanical activation of the reactants. Data on the degree of SrZrO3 formation have been analyzed using the basic equations of the kinetics of solid-state reactions. The best agreement of the theoretical prediction with the experimental results has been obtained in the case of the Zhuravlev-Lesokhin-Tempelman equation. Mechanical activation of the SrCO3-ZrO2 mixture for 2–10-min causes marked acceleration of SrZrO3 formation in the course of subsequent sintering.