POWDER CHARACTERISTICS AND MICROSTRUCTURE OF URANIUM-DIOXIDE AND URANIUM DIOXIDE-GADOLINIUM OXIDE FUEL

Authors
GUNDUZ G USLU I
Citation
G. Gunduz et I. Uslu, POWDER CHARACTERISTICS AND MICROSTRUCTURE OF URANIUM-DIOXIDE AND URANIUM DIOXIDE-GADOLINIUM OXIDE FUEL, Journal of nuclear materials, 231(1-2), 1996, pp. 113-120
Citations number
26
Categorie Soggetti
Nuclear Sciences & Tecnology","Mining & Mineral Processing","Material Science
Journal title
Journal of nuclear materials → ACNP
ISSN journal
00223115
Volume
231
Issue
1-2
Year of publication
1996
Pages
113 - 120
Database
ISI
SICI code
0022-3115(1996)231:1-2<113:PCAMOU>2.0.ZU;2-I
Abstract
Three different fuels UO2-only, UO2-Gd2O3(5%), and UO2-Gd2O3(10%) were produced by sol-gel technique. Their powder characteristics such as f lowability, BET surface area, average pore diameter, and cumulative po re volume were determined. The pore size distributions of powders, gre en pellets, and sintered fuels were determined by using a mercury poro simeter. The theoretical densities of sintered fuels were found to be 98.01, 95.3, and 95.9%, respectively. Their ruggedness fractal dimensi ons were 1.111, 1.044, and 1.042, while the fractal dimensions associa ted with the size distribution of grains were 1.44, 1.58, and 1.60, re spectively.