Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

Sound wave velocities of fcc Fe–Ni alloy at high pressure and temperature by mean of inelastic X-ray scattering

Title data

Kantor, Anastasia ; Kantor, Innokenty ; Kurnosov, Alexander ; Kuznetsov, Alexei Y. ; Dubrovinskaia, Natalia ; Krisch, Michael ; Bosak, Alexeï ; Dmitriev, Vladimir ; Urusov, Vadim S. ; Dubrovinsky, Leonid:
Sound wave velocities of fcc Fe–Ni alloy at high pressure and temperature by mean of inelastic X-ray scattering.
In: Physics of the Earth and Planetary Interiors. Vol. 164 (14 September 2007) Issue 1–2 . - 83 - 89.
ISSN 1872-7395
DOI: https://doi.org/10.1016/j.pepi.2007.06.006

Official URL: Volltext

Project information

Project financing: Deutsche Forschungsgemeinschaft
ESF

Abstract in another language

Knowledge of the high-pressure and high-temperature elasticity of Fe–Ni alloy with low (5–25%)Ni content is crucial for geosciences since it is probably the major component of the cores of the terrestrial planets and the Moon. Here we present a study of a FeNi alloy with 22at.% of Ni to 72 {GPa} and 715 K, using inelastic X-ray scattering (IXS) and X-ray powder diffraction from polycrystalline material. The X-ray diffraction (XRD) study revealed stability of the face centred cubic (fcc) over the hexagonal close packed (hcp) phase in the whole investigated pressure–temperature range. The study presents first investigations of elasticity of fcc phase of iron–nickel Fe0.₇₈Ni0.₂₂ alloy. The isothermal equations of state were derived at room temperature and at 715 K (K₃00 = 162(1) GPa, K′₃00 = 4.97 ( 1 ) , {V300} = 6.89(1) cm³/mol; {K₇₁₅} = 160(1) GPa, K′₇₁₅ = 4.97 ( 2 ) , {V715} = 6.96(1) cm³/mol). Inelastic X-ray measurements allow the determination of the longitudinal acoustic wave velocity VP, and provide, combined with the measured equations of state, the full isotropic elasticity of the material. We found that within experimental errors our data follow the Birch's law. We did not observe any significant deviations for fcc Fe0.₇₈Ni0.₂₂ from elastic properties of pure ɛ-iron.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Equation of state
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography > Chair Crystallography - Univ.-Prof. Dr. Sander van Smaalen
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 24 Nov 2015 09:59
Last Modified: 25 Oct 2017 11:34
URI: https://eref.uni-bayreuth.de/id/eprint/22954