Preparation of Ca modified Li₂TiO₃ ceramics pebbles and its activation energy calculation
by Mohit Kumar; Rohit Kumar Sinha; Shlok Yadav; S.K. Sinha; P.M. Raole
International Journal of Materials Engineering Innovation (IJMATEI), Vol. 8, No. 3/4, 2017

Abstract: Ca modified lithium titanate (Li₂TiO₃) ceramics pebbles were prepared by method of sol-gel followed by urea-aceton spherodisation technique. Lithium titanate having monoclinic structure in pure phase was obtained. DTA/TG analysis of green sample was carried out to know the thermal reactions. Calcinations temperature was determined as 600°C. ICP test of sample was carried out to determine the purity of sample. Laser flash method was used to study thermal conductivity and diffusivity of the ceramics. The thermal conductivity of the sample at room temperature was about 3 W/m/K, which fell down to ~2.5 W/m/K at 600°C, after which it rises gradually to 4.0 W/m/K at 1000°C. Activation energy was calculated using Arrhenius equation and was obtained as 1.03 8eV/mole.

Online publication date: Tue, 06-Mar-2018

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