Development of an accident-tolerant fuel composite from uranium mononitride (UN) and uranium sesquisilicide (U-3 Si-2) with increased uranium loading

作者：Ortega Luis H^*; Blamer Brandon J; Evans Jordan A; McDeavitt Sean M

来源：Journal of Nuclear Materials, 2016, 471: 116-121.

DOI：10.1016/j.jnucmat.2016.01.014

• Accident-tolerant fuels
• Nuclear fuel
• Uranium sequisilicide
• U3Si2
• Uranium mononitride
• UN
• High density nuclear fuel
• Composite

The processing steps necessary to prepare a potential accident-tolerant fuel composite consisting of uranium mononitride ( UN) combined with uranium sesquisilicide (U-3 Si-2) are described. Liquid phase sintering was performed with U-3 Si-2 as the liquid phase combined with UN powder or UN m-spheres. Various UN to U-3 Si-2 ratios were tested which resulted in up to 94% dense pellets. Composite UN-U-3 Si-2 samples had greater than 30% more uranium content than UO2.

• 出版日期2016-4-1