Solution combustion synthesis of CaZrO3 ceramic perovskite using different fuels: In-situ FT-IR studies and monitoring of the flame reaction by thermocouple

Abstract

In this study, nanoparticles of perovskiteCaZrO₃ were prepared by a solution combustion technique using urea, glycine, β-alanineand citric acid as fuels. The aim of this work is to estimate the effect of these different fuels on the structure and microstructure of CaZrO₃ powders. The flame reaction was estimated by means of a thermocouple which allowed us to show that the combustion reaction velocity. The thermal decomposition of nitrate precursors was studied with the help of TG-DTA coupled with the infrared spectroscopy. The FT-IR spectroscopy enabled to check the identity of the evolved gases over the mass loss process. CaZrO₃ powders were calcined at 900 °C for 1 h. The powders were thoroughly characterized by scanning electron microscopy, X-ray diffraction andThermodilatometry. Also, the combustion process using glycine as fuel is beneficial to produce CaZrO₃ powders at low temperature, which are known to have a good reactivity with fine particles.