Metallurgy of rechargeable hydrides
Thermodynamic principles of metal-hydrogen (M-H) systems are reviewed, and the theory and practice of M-H alloys are detailed. Pseudobinary systems, phase transformations, and metastability are briefly discussed. The LaNi5-H system is used to examine plateau slope and hysteresis in M-H alloy formation, and the rules of simple averaging and reversed stability are assessed with respect to their usefulness in predicting the behavior of such systems. The crystal structure of metal hydrides is addressed, including AB, AB2, and AB5 structure. Finally, the use of ternary substitutional alloying in controlling the thermodynamic properties of M-H systems is discussed, illustrating the substitution of copper for nickel in LaN5 and the dependence of the equilibrium pressure on the unit cell volume of various CaCu5 type compounds.
- Research Organization:
- Inco Research and Development Center, Inc., Suffern, NY
- OSTI ID:
- 6433567
- Journal Information:
- Annu. Rev. Mater. Sci.; (United States), Journal Name: Annu. Rev. Mater. Sci.; (United States) Vol. 12; ISSN ARMSC
- Country of Publication:
- United States
- Language:
- English
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CRYSTAL-PHASE TRANSFORMATIONS
ENERGY STORAGE SYSTEMS
ENERGY SYSTEMS
EXTRACTIVE METALLURGY
HYDRIDES
HYDROGEN COMPOUNDS
HYDROMETALLURGY
METALLURGY
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES