JMSSJ On-line

JMSSJ On-line, Vol. 51 (2003) No. 1, pp. 163-167

Hydrogen Atmosphere Effect on Vaporization of Li₂TiO₃ by means of High Temperature Mass Spectrometry		>> Full Text PDF >> References
*Tsuyoshi HOSHINO,^a) Masaru YASUMOTO,^b) Yoichi TAKAHASHI,^c) Takayuki TERAI,^a) and Michio YAMAWAKI^a)** ^a)Department of Quantum Engineering and Systems Science, Graduate School of Engineering, University of Tokyo (7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan) ^b)Research Center for Nuclear Science and Technology, University of Tokyo (7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan) ^c)Department of Applied Chemistry, Chuo University (1-13-27, Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan) ^Corresponding author. E-mail: hoshino@sky.biglobe.ne.jp

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

Key words: Atmosphere controlled high temperature mass spectrometer, Knudsen cell, Tritium breeding material, Vaporization property, Thermogravimetry