Anisotropy of Self-Diffusion in Alpha Uranium

Abstract

Self‐diffusion along the three principal crystallographic directions of alpha uranium has been measured on mosaic structured single crystals by the tracer‐sectioning method. The diffusion coefficients at 625.5°C are $$\begin{array}{c}{D}_{\text{[100]}}{\mathrm{=D}}_{\text{[001]}}{\text{=1.95×10}}^{\text{−13}}\hspace{0.17em}{\mathrm{cm}}^2/\sec ,\\ D_{\text{[010]}}{\text{⩽10}}^{\text{−14}}\hspace{0.17em}{\mathrm{cm}}^2/\sec .\end{array}$$ It appears that the mosaic structure has not affected the diffusion significantly.