Authors: Mohit Kumar; Rohit Kumar Sinha; Shlok Yadav; S.K. Sinha; P.M. Raole
Addresses: School of Creative Learning, Patna, 801503, India ' School of Creative Learning, Patna, 801503, India ' Department of Physics, Birla Institute of Technology, Patna, 800014, India ' Department of Physics, Birla Institute of Technology, Patna, 800014, India ' Institute for Plasma Research, Gandhinagar, 382428, India
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.
Keywords: lithium titanate; breeder material; sol.gel; thermal conductivity; activation energy.
International Journal of Materials Engineering Innovation, 2017 Vol.8 No.3/4, pp.273 - 281
Received: 06 Jul 2017
Accepted: 22 Oct 2017
Published online: 06 Mar 2018 *