Transport of Deuterium in Nb—1 wt% Zr

The diffusion coefficients of D₂ in Nb—1 wt% Zr were determined in the range from 923 to 1148 K. A hollow-cylinder model, used as the frame of reference, adequately described the transport of D₂ through the alloy containing oxygen impurities. The diffusion coefficient is temperature dependent and is best described byD (m²/s) =8.5 ± 7 × 10⁻⁸ exp (−48.2 ± 6.7 × 10³/RT) .