Изучение диффузии водорода в титане методами из первых принципов

Abstract

Diffusion of hydrogen in Ti with hexagonal structure was investigated by projector augmentedwave method within the density functional theory formalism. The energy barriers for H diffusion along six trajectories were estimated. The diffusion of hydrogen between tetrahedral sites is found to be most preferred in comparison with its diffusion between octahedral sites. It was shown that doping of Ti by simple metals leads to increase of energy barrier between O-sites whereas d-metals with not fully occupied d-band lead to its decrease.