Large scale synthesis of copper nickel alloy nanoparticles with reduced compressibility using arc thermal plasma process

Subrat Kumar Das; Arkaprava Das; Mattia Gaboardi; Simone Pollastri; G. D. Dhamale; C. Balasubramanian; Boby Joseph

doi:10.1038/s41598-021-86776-0

Large scale synthesis of copper nickel alloy nanoparticles with reduced compressibility using arc thermal plasma process

Subrat Kumar Das, Arkaprava Das, Mattia Gaboardi, Simone Pollastri, G. D. Dhamale, C. Balasubramanian, Boby Joseph

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Among the various methods employed in the synthesis of nanostructures, those involving high operating temperature and sharp thermal gradients often lead to the establishment of new exotic properties. Herein, we report on the formation of Cu-Ni metallic alloy nanoparticles with greatly enhanced stiffness achieved through direct-current transferred arc-thermal plasma assisted vapour-phase condensation. High pressure synchrotron X-ray powder diffraction (XRPD) at ambient temperature as well as XRPD in the temperature range 180 to 920 K, show that the thermal arc-plasma route resulted in alloy nanoparticles with much enhanced bulk modulus compared to their bulk counterparts. Such a behaviour may find an explanation in the sudden quenching assisted by the retention of a large amount of local strain due to alloying, combined with the perfect miscibility of the elemental components during the thermal plasma synthesis process.

Original language	English
Article number	7629
Journal	Scientific Reports
Volume	11
Issue number	1
DOIs	https://doi.org/10.1038/s41598-021-86776-0
State	Published - Dec 2021
Externally published	Yes

Funding

The authors thank DST, Govt. India for financial support in executing the high pressure diffraction experiments at Xpress beam line of the Elettra Sincrotrone Trieste (proposal # 20190406). Beamline staffs, G. Aquilanti (XAFS), M. Polentarutti (XRD1), and J. Plaisier (MCX) of Elettra are acknowledged for providing in-house time for part of the measurements reported here. Authors A. Das and G.D Dhamale are thankful to Institute for Plasma Research for providing post-doctoral fellowship.

Funders	Funder number
Institute for Plasma Research
Elettra-Sincrotrone Trieste	20190406

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abstract = "Among the various methods employed in the synthesis of nanostructures, those involving high operating temperature and sharp thermal gradients often lead to the establishment of new exotic properties. Herein, we report on the formation of Cu-Ni metallic alloy nanoparticles with greatly enhanced stiffness achieved through direct-current transferred arc-thermal plasma assisted vapour-phase condensation. High pressure synchrotron X-ray powder diffraction (XRPD) at ambient temperature as well as XRPD in the temperature range 180 to 920 K, show that the thermal arc-plasma route resulted in alloy nanoparticles with much enhanced bulk modulus compared to their bulk counterparts. Such a behaviour may find an explanation in the sudden quenching assisted by the retention of a large amount of local strain due to alloying, combined with the perfect miscibility of the elemental components during the thermal plasma synthesis process.",

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Large scale synthesis of copper nickel alloy nanoparticles with reduced compressibility using arc thermal plasma process

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