Title of article :
Irradiation behavior of the interaction product of U-Mo fuel particle dispersion in an Al matrix
Author/Authors :
Kim، نويسنده , , Yeon Soo and Hofman، نويسنده , , G.L.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
Pages :
7
From page :
181
To page :
187
Abstract :
Irradiation performance of U-Mo fuel particles dispersed in Al matrix is stable in terms of fuel swelling and is suitable for the conversion of research and test reactors from highly enriched uranium (HEU) to low enriched uranium (LEU). However, tests of the fuel at high temperatures and high burnups revealed obstacles caused by the interaction layers forming between the fuel particle and matrix. In some cases, fission gas filled pores grow and interconnect in the interdiffusion layer resulting in fuel plate failure. Postirradiation observations are made to examine the behavior of the interdiffusion layers. The interdiffusion layers show a fluid-like behavior characteristic of amorphous materials. In the amorphous interdiffusion layers, fission gas diffusivity is high and the material viscosity is low so that the fission gas pores readily form and grow. Based on the observations, a pore formation mechanism is proposed and potential remedies to suppress the pore growth are also introduced.
Journal title :
Journal of Nuclear Materials
Serial Year :
2012
Journal title :
Journal of Nuclear Materials
Record number :
1360911
Link To Document :
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