Manufacturing of yttria stabilized Zirconia based solid electrolyte thin films by Combined tape casting/Impregnation method

In this paper, tetragonal/cubic Zirconia composite thin film electrolytes were prepared by combined Tape casting-Polymer impregnation method. In order to prepare composite thin films, at first, porous thin 3 moll yttria stabilized zirconia (3YSZ) was prepared by tape casting method. The porous thin films were then impregnated by yttria solution to prepare composite electrolytes. The samples were sintered at 1450°C. Microstructure and phases of samples were investigated by SEM and XRD analysis. Hardness and toughness of samples were measured by Vickers micro hardness method. It was found composite thin film with thickness of 140 μm and hardness and toughness up 13 GPa and 4.3 MPa respectively, can be obtained