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

doi:10.1051/jp4:1993856

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

RAS - Institute of Solid State Physics

Research output: Contribution to journal › Conference article › peer-review

6 Scopus citations

Abstract

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 language	English
Pages (from-to)	287-290
Number of pages	4
Journal	Journal De Physique. IV : JP
Volume	3
Issue number	8
DOIs	https://doi.org/10.1051/jp4:1993856
State	Published - 1993
Externally published	Yes
Event	Proceedings of the 9th International Conference on Small Angle Scattering - Saclay, Fr Duration: Apr 27 1993 → Apr 30 1993

Access to Document

10.1051/jp4:1993856

Cite this

@article{eef2cda6cb7e45f8bc80cc47d8f66cf8,

title = "Phase separation in titanium hydrides studied by small-angle neutron scattering",

abstract = "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.",

author = "Bashkin, {I. O.} and Kolesnikov, {A. I.} and Malyshev, {V. Yu} and Ponyatovsky, {E. G.} and S. Borbely and L. Rosta and G. Pepy",

year = "1993",

doi = "10.1051/jp4:1993856",

language = "English",

volume = "3",

pages = "287--290",

journal = "Journal De Physique. IV : JP",

issn = "1155-4339",

number = "8",

note = "Proceedings of the 9th International Conference on Small Angle Scattering ; Conference date: 27-04-1993 Through 30-04-1993",

}

TY - JOUR

T1 - Phase separation in titanium hydrides studied by small-angle neutron scattering

AU - Bashkin, I. O.

AU - Kolesnikov, A. I.

AU - Malyshev, V. Yu

AU - Ponyatovsky, E. G.

AU - Borbely, S.

AU - Rosta, L.

AU - Pepy, G.

PY - 1993

Y1 - 1993

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0008535071&partnerID=8YFLogxK

U2 - 10.1051/jp4:1993856

DO - 10.1051/jp4:1993856

M3 - Conference article

AN - SCOPUS:0008535071

SN - 1155-4339

VL - 3

SP - 287

EP - 290

JO - Journal De Physique. IV : JP

JF - Journal De Physique. IV : JP

IS - 8

T2 - Proceedings of the 9th International Conference on Small Angle Scattering

Y2 - 27 April 1993 through 30 April 1993

ER -

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

Abstract

Access to Document

Other files and links

Fingerprint

Cite this