Oxygen diffusion in α-Zr single crystals

Oxygen diffusion coefficients, D, have been measured in α-Zr single crystals in directions both parallel and perpendicular to the c-axisThe measurements, made in the interval 610–870 K, show that diffusion anisotropy is weak and that D is little affected by specimen impurity content. The values determined here are in good agreement with the bulk of previous literature data for the same temperature interval but they are about ten times larger than corresponding values found in a very recent AES study.