Hydrogen Atmosphere Effect on Vaporization of Li₂TiO₃ by means of High Temperature Mass Spectrometry

Abstract

The atmosphere controlled high temperature mass spectrometer has provided the vapor pressure data for a promising tritium breeding material, Li₂TiO₃, under condition of low-pressure hydrogen atmosphere. The observed vaporization behavior of Li₂TiO₃ under hydrogen addition is presented here. It was pointed out that hydrogen addition may cause formation of non-stoichiometric composition phase. For elucidating its possible non-stoichiometric character, the composition of Li₂TiO₃ has been investigated mainly by means of thermogravimetry. The results revealed that Li₂TiO₃ has doubly non-stoichiometric composition, Li_2-xTiO_3-y