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


Gunduz G. , Uslu I.

JOURNAL OF NUCLEAR MATERIALS, vol.231, pp.113-120, 1996 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 231
  • Publication Date: 1996
  • Doi Number: 10.1016/0022-3115(96)00349-2
  • Title of Journal : JOURNAL OF NUCLEAR MATERIALS
  • Page Numbers: pp.113-120

Abstract

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.