Sol-gel followed by urea-acetone spherodization for preparation of lithium titanate ceramics pebbles and preliminary characterization

Lithium titanate ceramics pebbles were prepared by chemical method of sol. gel followed by urea-aceton spherodization technique. Lithium titanate having monoclinic phase was obtained. Laser flash method was used to study thermal conductivity and diffusivity of the ceramics. At near 472 K the average value of diffusivity was around 0.0052 cm2 s−1 while the specific heat capacity was 3101.3 J kg−1 K−1 while the same two parameters had values of 0.0041 cm2 s−1 and 3894.4 J kg−1 K−1 at a temperature 1050 K. The crush strength of pebble was measured on Universal Testing Machine (UTM) and was found as 37.08 N. The density was measured and found to be 2.8 g/cc (81.63% of TD of value 3.43 g/cc).