The diffusion of H in pure Fe which was in contact with distilled water at 10 to 100C was investigated by means using mass spectrometry. It was found that the results could be described by:

D (cm2/s) = 2.23 x 10-3 exp[-3.1(kcal/mol)/RT]

J.Y.Choi: Fall Meeting, Metallurgical Society of AIME, October 1968