Effect of dislocation trapping on deuterium diffusion in deformed, single-crystal Pd

From: Metallurgical and Materials Transactions | Date: June 1, 1998| Author: | Copyright information

Small-angle neutron scattering (SANS) has been used to characterize deuterium trapping at dislocations in deformed, single-crystal Pd during in situ gas evolution experiments. Two methods of deformation were employed-cold rolling and hydride cycling-which create different dislocation arrangements or substructures in Pd. The reduction of the trapped deuterium concentration at dislocations during evolution was directly monitored with SANS. Exponential decay rates of the trapped concentration were observed for both sample types, as is expected in a bulk diffusion process modified by the ...

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