Structural and electrical properties of ceramic composite 10Y2O3:CeO2+(10%)(150ppm)Y2O3:α-Al2O3

The attractive properties of Yttria doped ceria, particularly the structural and material properties, have led to vast research efforts to investigate and develop such materials. One of the main applications of this ceramic is in the solid oxides fuel cells for intermediate temperatures IT-SOFC. The aim of this paper is the preparation and characterization of Y doped Ceria - low Y doped α-Al 2 O 3 , a new composite for IT-SOFC. (10 mol %) Y : CeO 2 and (150 ppm) Y : α-Al 2 O 3 - composite were obtained by sol-gel or mechanical route for 10YSC, mechanical route for 150 Y: α-Al 2 O 3 . Grain shapes, grain size distributions and the mean grain value were determined by SEM, EDX and statistical investigations.