DIFFUSION OF HYDROGEN AND DEUTERIUM IN HIGH PURITY IRON BETWEEN 222 AND 322 K.

Abstract

The diffusion coefficent of hydrogen in iron is D**H (m**2/s) equals 4. 90 multiplied by 10** minus **8 exp ( minus 4200 (J/mol)/RT). The activation energies of diffusion for the two hydrogen isotopes were equal at 4200 J/mol. The isotope ratio of pre-exponential factors was 1. 24. The trapping effect by lattice imperfections was observed.