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Hydrogen sorption properties of hexagonal laves phase TiMn1.5intermetallic compound

Authors
Journal
International Journal of Hydrogen Energy
0360-3199
Publisher
Elsevier
Publication Date
Volume
36
Issue
1
Identifiers
DOI: 10.1016/j.ijhydene.2010.06.129
Keywords
  • Hydrogen
  • Metal Hydrides
  • Intermetallic Compounds
  • Phase Diagrams
  • Lattice Gas
Disciplines
  • Physics

Abstract

Abstract Simulation of phase transitions in the IMC–hydrogen systems in the frames of perturbation theory provides accurate description of main characteristics of the phase diagrams in the wide range of hydrogen pressures. The data obtained for thermodynamic parameters of the α–β transitions gives a possibility to describe hydrogen solubility in TiMn 1.5 at the pressures up to 600 atm; the parameters of the critical point of the α–β equilibriums are also obtained. The proposed calculation scheme uses no fitting parameters or empirical correlations and leans upon atomic characteristics of the hydrogen subsystem and metallic matrix which are physically meaningful.

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