Title :
Structural and electrical properties of ceramic composite 10Y2O3:CeO2+(10%)(150ppm)Y2O3:α-Al2O3
Author :
Ionascu, A.M. ; Mercioniu, I. ; Notingher, P.V. ; Popescu-Pogrion, N.
Author_Institution :
Lab. of Mater. Electr., Univ. Politeh. of Bucharest, Bucharest, Romania
Abstract :
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-Al2O3, a new composite for IT-SOFC. (10 mol %) Y : CeO2 and (150 ppm) Y : α-Al2O3 - composite were obtained by sol-gel or mechanical route for 10YSC, mechanical route for 150 Y: α-Al2O3. Grain shapes, grain size distributions and the mean grain value were determined by SEM, EDX and statistical investigations.
Keywords :
X-ray chemical analysis; alumina; ceramics; cerium compounds; composite materials; grain size; scanning electron microscopy; sol-gel processing; solid oxide fuel cells; statistical analysis; yttrium compounds; EDX; Y2O3:Al2O3; Y2O3:CeO2; ceramic composite; electrical property; grain shapes; grain size distributions; intermediate temperatures IT-SOFC; mean grain value; sol-gel process; solid oxides fuel cells; structural property; Aluminum oxide; Ceramics; Conductivity; Fuel cells; Scanning electron microscopy; Solids; Temperature;
Conference_Titel :
Advanced Topics in Electrical Engineering (ATEE), 2011 7th International Symposium on
Conference_Location :
Bucharest
Print_ISBN :
978-1-4577-0507-6
