Research output: Contribution to journal › Article › peer-review
Equations of state of rhodium, iridium and their alloys up to 70 GPa. / Yusenko, Kirill V.; Khandarkhaeva, Saiana; Fedotenko, Timofey et al.
In: Journal of Alloys and Compounds, Vol. 788, 05.06.2019, p. 212-218.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Equations of state of rhodium, iridium and their alloys up to 70 GPa
AU - Yusenko, Kirill V.
AU - Khandarkhaeva, Saiana
AU - Fedotenko, Timofey
AU - Pakhomova, Anna
AU - Gromilov, Sergey A.
AU - Dubrovinsky, Leonid
AU - Dubrovinskaia, Natalia
N1 - Publisher Copyright: © 2019 Elsevier B.V.
PY - 2019/6/5
Y1 - 2019/6/5
N2 - 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, Ir 0.42 Rh 0.58 and Ir 0.26 Os 0.05 Pt 0.31 Rh 0.23 Ru 0.15 , 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, Ir 0.42 Rh 0.58 and Ir 0.26 Os 0.05 Pt 0.31 Rh 0.23 Ru 0.15 were investigated under static compression for the first time. According to our data, the compressibility of Ir, Rh, fcc–Ir 0.42 Rh 0.58 , and fcc–Ir 0.26 Os 0.05 Pt 0.31 Rh 0.23 Ru 0.15 , can be described with the 3rd order Birch-Murnaghan equation of state with the following parameters: V 0 = 14.14(6) Å 3 ·atom −1 , B 0 = 341(10) GPa, and B 0 ' = 4.7(3); V 0 = 13.73(7) Å 3 ·atom −1 , B 0 = 301(9) GPa, and B 0 ' = 3.1(2); V 0 = 13.90(8) Å 3 ·atom −1 , B 0 = 317(17) GPa, and B 0 ' = 6.0(5); V 0 = 14.16(9) Å 3 ·atom −1 , B 0 = 300(22) GPa, B 0 ' = 6(1), where V 0 is the unit cell volume, B 0 and B 0 ' – are the bulk modulus and its pressure derivative.
AB - 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, Ir 0.42 Rh 0.58 and Ir 0.26 Os 0.05 Pt 0.31 Rh 0.23 Ru 0.15 , 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, Ir 0.42 Rh 0.58 and Ir 0.26 Os 0.05 Pt 0.31 Rh 0.23 Ru 0.15 were investigated under static compression for the first time. According to our data, the compressibility of Ir, Rh, fcc–Ir 0.42 Rh 0.58 , and fcc–Ir 0.26 Os 0.05 Pt 0.31 Rh 0.23 Ru 0.15 , can be described with the 3rd order Birch-Murnaghan equation of state with the following parameters: V 0 = 14.14(6) Å 3 ·atom −1 , B 0 = 341(10) GPa, and B 0 ' = 4.7(3); V 0 = 13.73(7) Å 3 ·atom −1 , B 0 = 301(9) GPa, and B 0 ' = 3.1(2); V 0 = 13.90(8) Å 3 ·atom −1 , B 0 = 317(17) GPa, and B 0 ' = 6.0(5); V 0 = 14.16(9) Å 3 ·atom −1 , B 0 = 300(22) GPa, B 0 ' = 6(1), where V 0 is the unit cell volume, B 0 and B 0 ' – are the bulk modulus and its pressure derivative.
KW - Equation of state
KW - High-entropy alloys
KW - High-pressure high-temperature
KW - Rhodium-iridium alloys
KW - OS
KW - COMPRESSIBILITY
KW - IR
KW - ELECTROCATALYTIC ACTIVITY
KW - PRESSURE
KW - RE
KW - METALS
KW - DIFFRACTION
KW - BINARY-ALLOYS
KW - EXTREME CONDITIONS
UR - http://www.scopus.com/inward/record.url?scp=85061913295&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2019.02.206
DO - 10.1016/j.jallcom.2019.02.206
M3 - Article
AN - SCOPUS:85061913295
VL - 788
SP - 212
EP - 218
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
ER -
ID: 18622028