Phase separation in titanium hydrides studied by small-angle neutron scattering

I. O. Bashkin, A. I. Kolesnikov, V. Yu Malyshev, E. G. Ponyatovsky, S. Borbely, L. Rosta, G. Pepy

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Various phases of titanium hydrides with differing hydrogen and deuterium content are studied by small-angle neutron scattering. The low temperature metastable χ phase produced by quenching under high pressure shows small, but pronounced scattering at liquid nitrogen temperature. At 140 K a very abrupt increase in the scattered intensity is detected, more than one order of magnitude for less than 30 s. The scattering from the room temperature (α+γ) phase is analysed by the fractal as well as the random two-phase model. The fit does not prove fractal behaviour of the α-Ti precipitates in the γ-TiH(D)1 matrix. A good representation is obtained in a random two-phase model, giving about 50 and 60 angstrom correlation lengths, independently of the deuterium or hydrogen content. For the δ phase, only the asymptotic behaviour of the scattering curves is observed in the scattering vector range covered in the experiments.

Original languageEnglish
Pages (from-to)287-290
Number of pages4
JournalJournal De Physique. IV : JP
Issue number8
Publication statusPublished - Dec 1 1993
EventProceedings of the 9th International Conference on Small Angle Scattering - Saclay, Fr
Duration: Apr 27 1993Apr 30 1993


ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Bashkin, I. O., Kolesnikov, A. I., Malyshev, V. Y., Ponyatovsky, E. G., Borbely, S., Rosta, L., & Pepy, G. (1993). Phase separation in titanium hydrides studied by small-angle neutron scattering. Journal De Physique. IV : JP, 3(8), 287-290.