SYNTHESIS AND STRUCTURAL PROPERTIES OF Al2O3-ZrO2 NANO COMPOSITE PREPARED VIA SOLUTION COMBUSTION SYNTHESIS

In this research, an alumina?zirconia composite containing 20 wt % zirconia was prepared by solution combustion synthesis (SCS) method using aluminum nitrate and zirconium nitrate as precursors whereas urea as fuel. The observed X-ray diffraction pattern within temperature range of 600 to 12000C revealed that with the increase in temperature t-ZrO2 phase shifted to m-ZrO2. Moreover the morphological characteristic using FTIR, in corroboration with XRD, confirms the crystallization of corundum (α- Al2O3) as one of the alumina phase and monoclinic phase of zirconia at 12000C. Micro structural characterization by SEM depicted that the particles tend to be more agglomerated with increasing temperature Comparatively high average pore size of 4nm and surface area of 92m2/g were calculated using BET analyzer.