Dependence of the thermal conductivity of (U, Pu) N on porosity and plutonium content

Thermal conductivities of (Np,Am)N and (Pu,Am)N solid solutions

“…Among a variety of porosity correction formulas, the equation (12) was in the best agreement with the result of the finite element computations in the wide range of the porosity up to 0.3 as reported by Bakker et al [18]. The thermal conductivities of (Np,Am)N and (Pu,Am)N solid solutions corrected to 100%TD in the temperature range between 473 and 1073 K are shown in figure 5, together with those of NpN [5], PuN [3] and AmN [5].…”

“…The fitted results of the thermal conductivities of (Np,Am)N and (Pu,Am)N solid solutions corrected to 100%TD were expressed by Np 0.75 Am 0.25 N : 100%TD together with those of NpN [5], PuN [3] and AmN [5].…”

“…Several results have so far been reported for the thermal conductivities of uranium nitride, UN [1][2][3], neptunium nitride, NpN [4,5], plutonium nitride, PuN [3,6,7], americium nitride, AmN [5,8] and (U,Pu)N, (U,Np)N and (Np,Pu)N solid solutions [3,9,10]. However, there has been no experimental data of the thermal conductivities for transuranium nitride solid solutions containing Am which is an important element for the transmutation.…”

Thermophysical characterization of ZrN and (Zr,Pu)N

“…Our results are shown together with data or fitting curves from Refs. [43] (ZrN), [13] (Zr 0.75 Pu 0.25 )N and [33] (PuN). For true comparison, all data on the figure are corrected to 100% of the theoretical density.…”

“…For both materials, an increasing trend with temperature is revealed and in Ref. [13] are plotted for comparison along with data for ZrN [43] and for PuN [33]. All data are corrected to 100% density.…”