The plasma evaporation-sputtering method was applied to make composite materials of the Mg-Ti system.
The ion-implanted deuterium desorption temperature variations as a function of the component concentration
were studied. It has been established that, by introducing titanium into magnesium, the deuterium
desorption temperature can be appreciably decreased (to 400-450 K) in comparison with the case of
deuterium desorption from magnesium ( 800 K). A step-like shape of the curve of deuterium desorption
temperature evidences on the presence of two different structure states of the Mg-Ti system depending on
the ratio of components. The deuterium temperature decrease can be caused by filamentary inclusions of
insoluble component (titanium) atoms formed in the process of composite making and annealing, providing
the deuterium diffusion from the sample at a lower temperature (channels for deuterium diffusion through
the surface barrier). The deuterium desorption data obtained on the example of Mg-Ti, Mg-V and Mg-Zr
composites provide support for further research into hydrogen storage materials containing low-soluble
chemical elements in the alloy component.
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