Powder characteristics and microstructure of uranium dioxide and uranium dioxide-gadolinium oxide fuel

Gunduz G. , Uslu I.

JOURNAL OF NUCLEAR MATERIALS, cilt.231, ss.113-120, 1996 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 231
  • Basım Tarihi: 1996
  • Doi Numarası: 10.1016/0022-3115(96)00349-2
  • Sayfa Sayıları: ss.113-120


Three different fuels UO2-only, UO2-Gd2O3(5%), and UO2-Gd2O3(10%) were produced by sol-gel technique. Their powder characteristics such as flowability, BET surface area, average pore diameter, and cumulative pore volume were determined. The pore size distributions of powders, green pellets, and sintered fuels were determined by using a mercury porosimeter. The theoretical densities of sintered fuels were found to be 98.01, 95.3, and 95.9%, respectively. Their ruggedness fractal dimensions were 1.111, 1.044, and 1.042, while the fractal dimensions associated with the size distribution of grains were 1.44, 1.58, and 1.60, respectively.