Research output: Contribution to journal › Article › peer-review
Experimental Study of the Subsolidus Region of the Ir-Ni Phase Diagram. / Shubin, Yu V.; Popov, A. A.; Plyusnin, P. E. et al.
In: Journal of Phase Equilibria and Diffusion, Vol. 43, No. 4, 08.2022, p. 419-426.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Experimental Study of the Subsolidus Region of the Ir-Ni Phase Diagram
AU - Shubin, Yu V.
AU - Popov, A. A.
AU - Plyusnin, P. E.
AU - Sharafutdinov, M. R.
AU - Korenev, S. V.
N1 - Funding Information: The synthesis of the Ir-Ni alloys was performed within project # 21-13-00414, supported by the Russian Science Foundation. Phase equilibria were studied within project # 20-33-90211, supported by the Russian Foundation for Basic Research. The work was performed using the facilities of the Siberian Center for Synchrotron and Terahertz Radiation. The authors are grateful to Evgeny Gerasimov for his assistance in the TEM studies. Publisher Copyright: © 2022, ASM International.
PY - 2022/8
Y1 - 2022/8
N2 - The phase diagram of the refractory Ir-Ni system was reinvestigated in the temperature range of 500-900 °C using a special approach designed to reduce kinetic difficulties in reaching the equilibrium state. Ir-Ni porous nanoalloys obtained by reductive thermolysis at 600 °C of specially prepared multicomponent precursors were used as initial samples in the study of phase equilibria. The thermolysis conditions of the precursors were selected based on thermal analysis data. The formation of Ir-Ni nanoalloys was studied in situ by high-temperature x-ray diffraction on a synchrotron radiation source. The study of samples subjected to long-term annealing at temperatures of 500, 700 and 900 °C confirmed that Ir-Ni alloys formed a continuous series of disordered substitution solid solutions. The existence of Ir3Ni, IrNi, IrNi3 intermetallic phases mentioned earlier by other authors was not confirmed. It was experimentally shown that Ir-Ni alloys formed only a continuous series of disordered substitutional solid solutions over the entire composition range in the subsolidus region.
AB - The phase diagram of the refractory Ir-Ni system was reinvestigated in the temperature range of 500-900 °C using a special approach designed to reduce kinetic difficulties in reaching the equilibrium state. Ir-Ni porous nanoalloys obtained by reductive thermolysis at 600 °C of specially prepared multicomponent precursors were used as initial samples in the study of phase equilibria. The thermolysis conditions of the precursors were selected based on thermal analysis data. The formation of Ir-Ni nanoalloys was studied in situ by high-temperature x-ray diffraction on a synchrotron radiation source. The study of samples subjected to long-term annealing at temperatures of 500, 700 and 900 °C confirmed that Ir-Ni alloys formed a continuous series of disordered substitution solid solutions. The existence of Ir3Ni, IrNi, IrNi3 intermetallic phases mentioned earlier by other authors was not confirmed. It was experimentally shown that Ir-Ni alloys formed only a continuous series of disordered substitutional solid solutions over the entire composition range in the subsolidus region.
KW - alloys
KW - iridium
KW - nickel
KW - phase diagram
UR - http://www.scopus.com/inward/record.url?scp=85135849202&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/bc1a450c-f39d-3dbc-a06d-37eeb80795ad/
U2 - 10.1007/s11669-022-00982-5
DO - 10.1007/s11669-022-00982-5
M3 - Article
AN - SCOPUS:85135849202
VL - 43
SP - 419
EP - 426
JO - Journal of Phase Equilibria and Diffusion
JF - Journal of Phase Equilibria and Diffusion
SN - 1547-7037
IS - 4
ER -
ID: 36916328