at Google ScholarTitle data
Yusenko, Kirill V. ; Khandarkhaeva, Saiana ; Fedotenko, Timofey ; Pakhomova, Anna S. ; Gromilov, Sergey A. ; Dubrovinsky, Leonid ; Dubrovinskaia, Natalia:
Equations of state of rhodium, iridium and their alloys up to 70 GPa.
In: Journal of Alloys and Compounds.
Vol. 788
(2019)
.
- pp. 212-218.
ISSN 0925-8388
DOI: https://doi.org/10.1016/j.jallcom.2019.02.206
Abstract in another language
Knowledge of the compressional and thermal behaviour of metals and alloys is of a high fundamental and applied value. In this work, we studied the behaviour of Ir, Rh, and their fcc-structured alloys, Ir0.42Rh0.58 and Ir0.26Os0.05Pt0.31Rh0.23Ru0.15, up to 70 GPa using the diamond anvil cell technique with synchrotron X-ray diffraction. We found that all these materials are structurally stable upon room-temperature hydrostatic compression in the whole pressure interval, as well as upon heating to 2273 K both at ambient and high pressure. Rh, Ir0.42Rh0.58 and Ir0.26Os0.05Pt0.31Rh0.23Ru0.15 were investigated under static compression for the first time. According to our data, the compressibility of Ir, Rh, fcc–Ir0.42Rh0.58, and fcc–Ir0.26Os0.05Pt0.31Rh0.23Ru0.15, can be described with the 3rd order Birch-Murnaghan equation of state with the following parameters: V0 = 14.14(6) Å3·atom−1, B0 = 341(10) GPa, and B0' = 4.7(3); V0 = 13.73(7) Å3·atom−1, B0 = 301(9) GPa, and B0' = 3.1(2); V0 = 13.90(8) Å3·atom−1, B0 = 317(17) GPa, and B0' = 6.0(5); V0 = 14.16(9) Å3·atom−1, B0 = 300(22) GPa, B0' = 6(1), where V0 is the unit cell volume, B0 and B0' – are the bulk modulus and its pressure derivative.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Keywords: | Rhodium-iridium alloys; High-entropy alloys; Equation of state; High-pressure high-temperature |
| Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Professor Materials Physics and Technology at Extreme Conditions Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Professor Materials Physics and Technology at Extreme Conditions > Professor Materials Physics and Technology at Extreme Conditions - Univ.-Prof. Dr. Natalia Doubrovinckaia 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: | 11 Jul 2019 08:37 |
| Last Modified: | 22 Oct 2019 11:56 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/49903 |