Experimental Study of the Subsolidus Region of the Ir-Ni Phase Diagram | Sciact - CRIS-system of Boreskov Institute of Catalysis

Experimental Study of the Subsolidus Region of the Ir-Ni Phase Diagram Full article

Journal

Journal of Phase Equilibria and Diffusion
ISSN: 1547-7037 , E-ISSN: 1863-7345

Output data

Year: 2022, Volume: 43, Number: 4, Pages: 419-426 Pages count : 8 DOI: 10.1007/s11669-022-00982-5

Tags

alloys; iridium; nickel; phase diagram

Authors

Shubin Yu.V. ^1,2 , Popov A.A. ¹ , Plyusnin P.E. ^1,2 , Sharafutdinov M.R. ^3,4 , Korenev S.V. ^1,2

Affiliations

1	Nikolaev Institute of Inorganic Chemistry SB RAS, Lavrent’eva Ave 3, Novosibirsk, Russia 630090
2	Novosibirsk State University, str. Pirogova 1, Novosibirsk, Russia 630090
3	Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis SB RAS, Nikol’skiy Ave 1, Kol’tsovo, Russia 630559
4	Institute of Solid State Chemistry and Mechanochemistry SB RAS, str. Kutateladze 18, Novosibirsk, Russia 630128

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.

Shubin Y.V. , Popov A.A. , Plyusnin P.E. , Sharafutdinov M.R. , Korenev S.V.
Experimental Study of the Subsolidus Region of the Ir-Ni Phase Diagram
Journal of Phase Equilibria and Diffusion. 2022. V.43. N4. P.419-426. DOI: 10.1007/s11669-022-00982-5 WOS Scopus РИНЦ AN OpenAlex publication_identifier_short.sciact_skif_identifier_type

Submitted:	May 6, 2022
Accepted:	Jul 29, 2022
Published print:	Aug 9, 2022
Published online:	Aug 9, 2022

Web of science:	WOS:000837909300001
Scopus:	2-s2.0-85135849202
Elibrary:	51567430
Chemical Abstracts:	2022:2096978
OpenAlex:	W4292400764
publication_identifier.sciact_skif_identifier_type:	2364

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