Homogeneous U0.89Pu0.11O2 mixed oxide by use of PuO2 nanopowders
Jacobus Boshoven (European Commission - Joint Research Centre)
Abibatou Ndiaye (MELOX)
Bertrand Morel (ORANO Support)
Marco Cologna (European Commission - Joint Research Centre)
Jean François Vigier (European Commission - Joint Research Centre)
Ramon Carlos Marquez (European Commission - Joint Research Centre)
Rudy J.M. Konings (TU Delft - RST/Reactor Physics and Nuclear Materials, European Commission - Joint Research Centre)
Karin Popa (European Commission - Joint Research Centre)
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Abstract
We show that a homogeneous single-phase mixed oxide is obtained by blending and sintering commercial UO2 and nanocrystalline PuO2 powder; whereas, under the same conditions, conventional PuO2 powder obtained from oxalate precipitation and composed of platelets, yields two-phase mixed oxide. The use of nanometric PuO2 results in a larger final grain size.
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