Isothermal diffusion in uranium-plutonium-zirconium alloys

Computational study of atomic mobility for the bcc phase of the U–Pu–Zr ternary system

“…Most likely, this is caused by the up-hill diffusion and the short ordering effect. Petry and Dayananda [28] Fig. 11.…”

“…11. The agreement is fair for all the diffusion couples because there is no diffusion rate from Petry and Dayananda [28] and the diffusion path alone can not be directly used in the optimization process to further improve the present assessment.…”

“…There is some experimental diffusion data available for the U-Pu-Zr bcc alloys, including tracer, impurity, and interdiffusion coefficients [6,7,[10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. In the subsections that follow, the data is evaluated system by system.…”

“…Simulated diffusion paths, i.e. the curves on the ternary isotherm mapping the locus of the compositions in planes parallel to the couple interface throughout the diffusion zone, for the diffusion couples fabricated by Petry and Dayananda [28] are compared with the experimental points in Fig. 11.…”

Diffusion of Cerium in Uranium-Zirconium Solid Solutions

“…Estimation of migration of the fuel constituents and lanthanides requires fundamental data such as diffusion coefficients, so that interdiffusion and thermo-diffusion in the U-Zr binary 2,3) and U-Pu-Zr ternary [4][5][6] systems were studied. However, there has been no examination of the influence of the lanthanides on these interdiffusion and thermo-diffusion.…”