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http://dx.doi.org/10.4191/KCERS.2002.39.8.764

Diluted Synthesis of Manocrystalline CeO2 by Mechanical Milling  

Lim, Geon-Ja (Nano-Materials Research Center, Korea Institute of Science and Technology)
Kim, Tae-Eun (Nano-Materials Research Center, Korea Institute of Science and Technology)
Lee, Jong-Ho (Nano-Materials Research Center, Korea Institute of Science and Technology)
Lee, Hae-Weon (Nano-Materials Research Center, Korea Institute of Science and Technology)
Rhee, Dong-Joo (Nano fluid Technologies Co., Ltd.)
Hyun, Sang-Hoon (Department of Ceramic Engineering, Yonsei University)
Publication Information
Journal of the Korean Ceramic Society / v.39, no.8, 2002 , pp. 764-768 More about this Journal
Abstract
The nanocrystalline $CeO_2$ was synthesized by mechanical milling and subsequent heat-treatment with the mixture of $Ce(OH)_4$ precursor and diluent, NaCl. Using deionized water, the diluent, NaCl, in the mixture has been easily dissolved out. Diffusion barrier was provided by the diluent during heat-treatment, which suppressed not only the coarsening of primary particle but also the agglormeration between the particles. Crystallite and aggregate size of $CeO_2$ depended on the concentration of diluent, temperature and time of heat-treatment; increased with the temperature and time increases. In case the mixture was heat-treated at high than $600^{\circ}C$, however, the crystallite size was saturated near 20 nm, which was supposed to be due to the densification of diluent.
Keywords
Nanocrystalline; $CeO_2$; Mechanical milling; Diluent;
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Times Cited By KSCI : 2  (Citation Analysis)
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