Abstract
We have successfully synthesized nanocrystalline calcium titanate (CaTiO3) at low temperature by wet chemical method. The prepared CaTiO3 was characterized by simultaneous Thermogravimetry-differential thermal analysis. The CaTiO3 nanoparticles at different annealing temperatures confirms the formation of the single-phase CaTiO3 at 700 °C for 1 h. The influence of annealing temperatures on the microstructures are investigated by SEM and TEM.The thermal expansion of sintered CaTiO3 in the range of 30 °C to 950 °C exhibits average linear thermal expansion coefficient (α) of 12.94 × 10−6 K−1. The nanocrystalline CaTiO3 powder pelletized and sintered at 1250 °C for 5 h has achieved density > 95 %.
Published Version
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