Peculiarities of interatomic interaction in titanium hydrides with different content of hydrogen

Both the Ti K beta(5) and Ti L alpha X-ray emission spectra of metallic tit anium and its hydrides TiH1.88, TiH2.27, and TiH2.52 have been investigated . In the above spectra the differences of energy distributions of Ti p-like and Ti d-like valence states of the hydrides have been observed. The obser ved peculiarities of interatomic interactions have been explained taking in to account that, in the hydrides TiHx>2, hydrogen atoms begin to occupy oct ahedral positions in addition to tetrahedral ones. The X-ray Ti K absorptio n spectra of Ti-met, TiO2 and the hydrides mentioned above have also been s tudied. Results of investigations of the Ti It absorption spectra indicate that, in the titanium hydrides studied, a charge transfer occurs from Ti to H atoms. (C) 1999 Published by Elsevier Science Ltd on behalf of Internati onal Association for Hydrogen Energy. All rights reserved.