In:
Berichte der Bunsengesellschaft für physikalische Chemie, Wiley, Vol. 94, No. 12 ( 1990-12), p. 1457-1464
Kurzfassung:
The solubility of hydrogen in Pd – Ti and Pd – Zr solid solution alloys containing up to 6.0 at.% Ti and Zr has been measured at temperatures between 273 K and 433 K and hydrogen pressures up to 1000 Torr. The relative partial molar enthalpy, Δ H 0 H , at infinite dilution for Pd – Ti alloys shows a minor minimum around 4 at.% Ti, in spite of the Pd lattice contraction on Ti substitution. For Pd – Zr alloys the Δ H 0 H values increase in exothermicity regularly with Zr content. The relative partial molar entropy, Δ S 0 H , at infinite dilution in both alloy series decreases with the solute contents. The apparent H‐H attractive interactions, g 1 , in Pd – Ti(Zr) alloys decrease with alloying metal content, and the trend of the g 1 value with Ti content is dissimilar to those found for other lattice contracted alloys. The stability of the β‐phase hydride in Pd – Ti alloys decreases with Ti content and the β‐phase hydride in Pd – Zr alloys also becomes less stable with Zr content, albeit by a small amount, despite being a lattice expanded alloy system. Solvus compositions at the α max phase boundary in both Pd – Ti and Pd – Zr alloys are almost equal at the same alloying compositions of each alloy series, although increasing with alloying metal content in both cases.
Materialart:
Online-Ressource
ISSN:
0005-9021
,
0005-9021
DOI:
10.1002/bbpc.199000059
Sprache:
Englisch
Verlag:
Wiley
Publikationsdatum:
1990
ZDB Id:
2590196-5
ZDB Id:
201132-3
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