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http://dx.doi.org/10.4150/KPMI.2008.15.4.302

Sintering Behavior of Nano-sized Gd2O3-doped CeO2 Powder Prepared by A High Energy Ball Milling  

Ryu, Sung-Soo (Dept. of Engineering Ceramic, Korea Institute of Ceramic Engineering and Technology)
Kim, Hyung-Tae (Dept. of Engineering Ceramic, Korea Institute of Ceramic Engineering and Technology)
Publication Information
Journal of Powder Materials / v.15, no.4, 2008 , pp. 302-307 More about this Journal
Abstract
$Gd_2O_3$-doped $CeO_2$(GDC) solid solutions have been considered as a promising materials for electrolytes in intermediate-temperature solid oxide fuel cells. In this study, the nano-sized GDC powder with average panicle size of 69nm was prepared by a high energy ball milling process and its sintering behavior was investigated. Heat-treatment at $1200^{\circ}C$ of nano-sized GDC powder mixture led to GDC solid-solution. The enhanced densification over 96% of relative density was obtained after sintering at $1300^{\circ}C$ for 2h. It was found that the sinterability of GDC powder could be significantly improved by the introduction of a high energy ball milling process.
Keywords
Ceria; High energy ball milling; Solid oxide fuel cell; Sintering; Nanocrystalline;
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