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Studies on plutonium-zirconium co-precipitation and carbothermal reduction in the internal gelation process for nitride fuel preparation

Marcus Hedberg (Institutionen för kemi och kemiteknik, Kärnkemi) ; Christian Ekberg (Institutionen för kemi och kemiteknik, Kärnkemi)
Journal of Nuclear Materials (0022-3115). Vol. 479 (2016), p. 608-615.
[Artikel, refereegranskad vetenskaplig]

Sol-gel based techniques are one way to lower the handling of highly radioactive powders when producing transuranium-containing fuel. In this work inert matrix (Zr0.6,Pu0.4)N fuel has been produced by internal gelation followed by carbothermal reduction. No co-gelation was observed during internal gelation and a two phase material could be detected by scanning electron microscopy in the nitrided microspheres. Sintering has been performed in both Ar and N2. X-ray diffraction revealed that sintering in N2 produced a solid solution, while sintering in Ar did not. The final metal composition in the microspheres was determined by ICP-MS to be about 41% Pu and 59% Zr. Vegard's law was applied to estimate the nitride purity in the solid solution pellet to be Zr0.6Pu0.4N0.87C0.13 making the final material more of a carbonitride than a pure nitride.



Denna post skapades 2016-09-15. Senast ändrad 2016-10-06.
CPL Pubid: 241831

 

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Institutioner (Chalmers)

Institutionen för kemi och kemiteknik, Kärnkemi

Ämnesområden

Kärnkemi

Chalmers infrastruktur

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