Material property correlations for uranium mononitride

Synthesis and Optimization of the Sintering Kinetics of Actinide Nitrides

“…Holt and Almassy then compared this to the work of Sturiale and DeCrescente, who estimated an apparent activation energy for grain boundary diffusion of 121 kJ / mol . The works of Sturiale and DeCrescente [167], Holt and Almassy [165], and Droege and Alexander [168] were compared by Hayes [169] in 1990 ( Figure 124). However, the reports by Sturiale and DeCrescente and Droege and Alexander were not available for my review.…”

“…However, the reports by Sturiale and DeCrescente and Droege and Alexander were not available for my review. The data presented in this review is merely data presented by Holt and Almassy [165] and Hayes [169]. [169] of three independent studies on the selfdiffusion coefficient of nitrogen in the UN system.…”

“…The data presented in this review is merely data presented by Holt and Almassy [165] and Hayes [169]. [169] of three independent studies on the selfdiffusion coefficient of nitrogen in the UN system. The work of Holt and Almassy and Struiale and DeCrescente were used to derive a temperature, pressure, and grain size dependent nitrogen diffusion coefficient relation.…”

“…Both of the review papers by Hayes [169] and Matzke [170] present the scattered diffusion data from the work of Holt and Almassy [165] and Sturiale and DeCrescente [167] (Figures 123 and 124). From this scattered data, Hayes developed an Equation for the diffusion of nitrogen in UN with up to 6 significant figures.…”

A Uranium Nitride Doped with Chromium, Nickel or Aluminum as an Accident Tolerant Fuel

“…UN is one possible accident tolerant fuel, mostly due to its high thermal conductivity (15,8 W/m.K at 1000 K), which moreover rises with temperature [5,6] , unlike UO 2 . The higher thermal conductivity enables operation at lower temperatures [4] , which guarantees less heat is retained in the fuel elements.…”