Structural investigation of hydrogen solubility in YyR1-y alloys (R=Tb and Gd)

Y. Nakamura, P. Vajda, O. J. Zogal, E. Akiba

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

We have studied the structure of hydrogen loaded YyTb1-y alloys, with y=0.2 and 0.9, by X-ray diffraction (XRD) techniques. The room-temperature XRD profiles of Y0.2Tb0.8Hx exhibit, in addition to the peaks of the h.c.p. metal lattice, those of the f.c.c. dihydride for all x>0. In the case of Y0.9Tb0.1Hx, the f.c.c. peaks show up only for x=0.20, indicating H-solubility for smaller hydrogen concentrations in this alloy. As for the two YyGd1-y (y=0.3 and 0.4) alloys, we observe in both cases precipitation of the dihydride for the smallest H concentrations. These results complement earlier resistivity measurements on the same systems, by presenting the evolution of the respective lattice parameters and their c/a ratios upon hydrogen addition and, in particular, specifying the influence of the metal lattice environment upon the state of the precipitating hydride.

Original languageEnglish
Pages (from-to)105-108
Number of pages4
JournalJournal of Alloys and Compounds
Volume356-357
DOIs
Publication statusPublished - Aug 11 2003
EventProceedings of the Eight International Symposium on Metal Hyd (MH 2002) - Annecy, France
Duration: Sep 2 2002Sep 6 2002

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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