2002•Nuclear Engineering and TechnologyRequires access

Relation Between Density and Porosity in Sintered UO₂ Pellets

Sang Ho Na, Si Hyung Kim, Youngwoo Lee, Myung June Yoo

Abstract

The relation between sintered densities and porosities in UO pellets is investigated. The open porosity decreases linearly up to about 95% T.D.,(theoretical density) as the sintered density increases whereas, above 96% T.D., sintered UO pellets do not have any open pores. The fraction of open porosity to the total porosity also decreases linearly as the sintered density increases, though the slope is lower than that of open porosity and, above 95% T.D., the fraction decreases rapidly to approach a zero.

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Key concepts: Pellets, Porosity, Materials science, Sintering, Bulk density, Composite material, Mineralogy, Chemistry