Synthesis and characterization of 8YSZ/5GDC composite and dissimiliar-bulk by sonochemistry assisted sol-gel method
2017
Synthesis and characterization of 8YSZ (8%mol Y2O3 – ZrO2) and 5GDC (5%mol Gd2O3–CeO2) combination in the form of composite and dissimilar bulk using sonochemistry assisted sol-gel method have been done. 8YSZ and 5GDC powders were produced from sol-gel route method. Each of the powder was then ultrasonicated for 30 hours with 25kHz±50Hz of frequency and 39% of amplitude. Toluene was used as a solution for the ultrasonication process. 8YSZ/5GDC composite was made by mixing the powders of 50%:50% in weight, and afterward compacted become a pellet. 8YSZ/5GDC dissimilar bulk was made by connected between 8YSZ pellet and 5GDC pellet at a flat part, and afterward re-compacted become a single pellet. Then, the pellets were sintered at 1400°C of temperature for 3 hours. The results showed that the ionic conductivity of the composite is higher than the dissimilar bulk.
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