PHASE DIAGRAMS OF SYSTEMS OF HYDROGEN WITH TITANIUM, ZIRCONIUM, VANADIUM AND NIOBIUM,
Abstract
Phases of the systems titanium-hydrogen, zirconium-hydrogen, vanadium-hydrogen, and niobium-hydrogen with compositions ranging from no hydrogen to TiH1.93, ZrH2, VH0.915 and NbH at room temperature were studied by x-ray diffraction. The lower boundaries of the region of homogeneity of the beta-phase are shifted in a regular manner toward a lower hydrogen content on passing from titanium to niobium; this corresponds to the increase in the filling of the d-subhell of the corresponding transition metals. A satisfactory agreement between x-ray and pycnometric density values was found for the Zr-H and Nb-H systems; the discrepancy of these values in the Ti-H system is attributed to the fact that the hydrides studied were not in a state of equilibrium.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 17, 1967
- Accession Number
- AD0663333
Entities
People
- G. V. Samsonov
- M. M. Antonova
Organizations
- National Air and Space Intelligence Center