Published April 2011 | Version v1
Journal article Metadata-only

Hydrogen vibrational excitation spectra of CaF2-type metal hydrides synthesized from Ti-based BCC solid solution alloys

Creators

  • 1. National Inst. of Advanced Industrial Science and Technology, Tsukuba, Ibaraki (Japan)
  • 2. Hokkaido Univ., Faculty of Engineering, Sapporo, Hokkaido (Japan)

Description

Hydrogen vibrational excitation was studied for CaF2-type metal hydrides synthesized from Ti-based BCC solid solution alloys using inelastic incoherent neutron scattering (IINS). Ti1.0V1.1Mn0.9H4.5 and Ti0.7V1.2Cr1.1H4.8 showed IINS spectra similar to that reported for TiH2. The first three peaks were isolated but the higher excitation peaks were not clear. Analysis of the spectra using curve-fitting with Gauss functions revealed that the hydrogen vibration of Ti1.0V1.1Mn0.9H4.5 is harmonic but that of the Ti0.7V1.2Cr1.1H4.8 is deviated from harmonic, which reflects a trumpet-type potential. The relation between metal-hydrogen distance and vibrational excitation energy for the above two hydrides and Ti1.1Cr1.4Mo0.3H-5 was compared with a series of CaF2-type binary metal hydrides. All the hydrides of the Ti-based alloys had lower vibrational excitation energies than the binary metal hydrides for the corresponding metal-hydrogen distances. (author)

Availability note (English)

Available from http://dx.doi.org/10.2320/matertrans.MA201014

Additional details

Identifiers

DOI
10.2320/matertrans.MA201014;

Publishing Information

Journal Title
Materials Transactions
Journal Volume
52
Journal Issue
4
Journal Page Range
p. 591-594
ISSN
1345-9678

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
43020253
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
BCC LATTICES; CALCIUM FLUORIDES; EXCITATION; GAUSS FUNCTION; HYDRIDES; HYDROGEN; HYDROGEN STORAGE; INELASTIC SCATTERING; NEUTRON DIFFRACTION; SOLID SOLUTIONS; SPECTRA; TITANIUM BASE ALLOYS
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ALLOYS; CALCIUM COMPOUNDS; CALCIUM HALIDES; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CUBIC LATTICES; DIFFRACTION; DISPERSIONS; ELEMENTS; ENERGY-LEVEL TRANSITIONS; FLUORIDES; FLUORINE COMPOUNDS; FUNCTIONS; HALIDES; HALOGEN COMPOUNDS; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; MIXTURES; NONMETALS; SCATTERING; SOLUTIONS; STORAGE; TITANIUM ALLOYS; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
12 refs., 6 figs., 1 tab.