Articles
  • Highly sinterable nanocrystalline yttria powders fabricated by solution combustion synthesis 
  • Choong-Hwan Jung* and Ji-Yeon Park
  • Nuclear Materials Research Division, Korea Atomic Energy Research Institute, 1045 Daedeok-daero, Yuseong-gu, Daejeon 305-353, Rep. of Korea
Abstract
Nano-sized yttria powders were synthesized by solution combustion synthesis with glycine as a fuel. The powders were directly synthesized with a stoichiometric oxidant-to-fuel ratio in an air atmosphere without a calcination process and they were characterized by X-ray diffraction, a particle size distribution, SEM and TEM. The best powder properties were observed in the powders with a glycine-to-nitrate ratio of 1: 1.66. This product had a crystallite size of about 31 nm with a high surface area of 38 m(2)/g. The sintering behavior of the powders was also studied using a different process. Solution combustion synthesis was shown to be a practically viable process to prepare nano-sized and sinterable yttria-based ceramics.

Keywords: Yttria; Combustion; Fuel; Glycine; Nano

This Article

  • 2010; 11(6): 698-700

    Published on Dec 31, 2010

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