HYDROGEN SORPTION PECULIARITIES OF MECHANICALLY ACTIVATED INTERMETALLIC TIFE AND TIFE-MMNI(5)(LANI5) MIXTURES

The results of investigations into the hydrogen sorption peculiarities of mechanically activated TiFe and TiFe-MmNi(5)(LaNi5) samples at roo m temperature and without preliminary thermal activation are presented . It has been found that pressed TiFe (> 0.4 mm fraction) samples abso rb hydrogen for the first time at room temperature. The samples made o f fine TiFe powder (< 0.4 mm fraction) exhibited impaired hydrogenatio n in spite of the fresh surface availability in the initial TiFe sampl es. In the TiFe (<0.4 mm fraction) complete hydrogenation at room temp erature and without preliminary thermal activation is shown to proceed only in the present TiFe-MmNi(5)(LaNi5) mixtures. Copyright (C) 1996 Published by Elsevier Science Ltd on behalf of International Associati on for Hydrogen Energy.