Changes of mechanical properties of TiD2 film irradiated with high intense pulsed ion beam

Abstract:

Metal hydride (MH_x) is typically under extreme non-equilibrium irradiations when used as a neutron moderator in nuclear reactor, an ion source in laser, a target material for neutron generator, and other devices. This work proposes using an extreme non-equilibrium high intensity pulsed ion beam (HIPIB) to evaluate the effects on mechanic properties of TiD₂ film under non-equilibrium irradiations. Both microscratch and microhardness were measured for the original and irradiated samples. Results reflect that frictional coefficient on the surface of scratch test is reduced under repetitive irradiations, and repeated melting of the surface layer makes the scratch revealing a more smoothed and densified texture, and the release of D can also improve both of its hardness and toughness, alleviating the plastic deformations.