The diffusion of H in the α-phase was studied at 300 to 700C. The results for iodide and sponge grades could be described by:

iodide:     D (cm2/s) = 6.94 x 10-3 exp[-10.58(kcal/mol)/RT]

sponge:     D (cm2/s) = 7.82 x 10-3 exp[-10.93(kcal/mol)/RT]

J.J.Kearns: Journal of Nuclear Materials, 1972, 43[3], 330-8

The best linear fits to the solute diffusion data ([1305] to [1309], [1313] to [1314], [1317] to [1318], [1322] to [1325], [1332] to [1334]) yield:

Cr: Ln[Do] = 0.55E – 22.7 (R2 = 0.82); H: Ln[Do] = 0.17E – 8.2 (R2 = 0.32);

Mn: Ln[Do] = 0.27E – 14 (R2 = 0.97); O: Ln[Do] = 0.29E – 14.4 (R2 = 0.37);

Zr: Ln[Do] = 0.34E – 18.9 (R2 = 0.999)