A new phase in palladium hydride technology
Two plateaux are observed in both the absorption and desorption isotherms of palladium hydride. For the absorption isotherm, a change in plateau pressure is observed at a hydrogen-to-metal (H/M) ratio of about 0.35 for all temperatures studied. For the desorption isotherm, the change in plateau pressure appears to be a function of temperature, ranging from an H/M ratio of 0.18 at 80{degrees}C to 0.3 at 140{degrees}C. These data are interpreted as being experimentally observed boundaries to an equilibrium phase line located in the miscibility gap of the palladium/hydrogen phase diagram. This new phase does not appear to be a stoichiometric compounds, but rather its composition seems to vary with temperature. 6 refs., 4 figs.
- Research Organization:
- Westinghouse Savannah River Co., Aiken, SC (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC09-89SR18035
- OSTI ID:
- 10132037
- Report Number(s):
- WSRC-MS--91-008; CONF-910920--25; ON: DE92009852
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
080201
36 MATERIALS SCIENCE
360202
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202
ADSORPTION ISOTHERMS
CHEMISORPTION STORAGE
DESORPTION
HELIUM 3
HYSTERESIS
ISOTOPE EFFECTS, ISOTOPE EXCHANGE, AND ISOTOPE SEPARATION
MICROSTRUCTURE
PALLADIUM HYDRIDES
PHASE TRANSFORMATIONS
STRUCTURE AND PHASE STUDIES
TEMPERATURE DEPENDENCE
TRITIDES