Thermodynamic properties of the ZrCr2T0.8 - H2 systems (T=Fe, Co, Ni) (CROSBI ID 124286)
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Podaci o odgovornosti
Drašner, Antun ; Blažina, Želimir
engleski
Thermodynamic properties of the ZrCr2T0.8 - H2 systems (T=Fe, Co, Ni)
The thermodynamic properties of the ZrCr2T0.8-H2 systems (T=Fe, Co, Ni) were studied by measuring the hydrogen equilibrium dissociation isotherms over the temperature range 296-403 K. It was observed that all the host alloys react readily and reversibly and absorb large quantities of hydrogen. Two of these systems exhibit a dissociation plateau at 101.3 kPa. This is observed at 381 K for the ZrCr2Fe0.8-H2 system and at 355 K for the cobalt analogue. It was also found that the equilibrium pressure considerably increases for all these systems in comparison with the equilibrium pressure of the prototype ZrCr2-H2 system. The heat of formation, entropy and Gibbs free energy of formation were determined for different hydrogen contents in all the systems investigated.
intermetallic compounds ; metal hydrides
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