Plasma Chemistry and Plasma Processing

, Volume 38, Issue 3, pp 621–635 | Cite as

Formation of Copper–Nickel Alloy from Their Oxide Mixtures Through Reduction by Low-Temperature Hydrogen Plasma

  • Kali Charan Sabat
  • Raja Kishore Paramguru
  • Barada Kanta Mishra
Original Paper
  • 37 Downloads

Abstract

The paper presents experimental results of a new method of production of nanoparticles of copper–nickel alloys from the reduction of the mixture of cupric oxide (CuO) and nickel oxide (NiO) by low-temperature hydrogen plasma in a microwave assisted hydrogen plasma set-up. The microwave power and hydrogen flow-rate used for the current investigation are 750 W and 2.5 × 10−6 m3 s−1 respectively. The addition of NiO–CuO, in proportion to result in alloys of 90Cu:10Ni and 70Cu:30Ni, not only removed the induction period from the kinetic plot of CuO reduction but also, improved the reduction rate of CuO. The XRD analysis of the product exhibited a single-phase peak with a d-spacing lying between Cu and Ni, which satisfies the Vergard’s law, indicating the Cu–Ni alloy formation. The lattice parameter decreases from 3.6221 (90Cu:10Ni) to 3.595 Ǻ (70Cu:30Ni), due to the smaller atomic radius of Ni (0.1246 nm) than that of Cu (0.1278 nm). The crystallite size, calculated by applying Scherrer’s formula, in both cases is found to be 31.7 nm.

Keywords

Cu–Ni alloy Low-temperature hydrogen plasma Reduction of metal oxides Vergard’s law Nanoparticles 

Notes

Acknowledgements

Dr. Kali Charan Sabat is thankful to CSIR, New Delhi for providing financial support to carry out research work under the Project MINMET, Project No. ESC 205.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Kali Charan Sabat
    • 1
    • 2
    • 3
  • Raja Kishore Paramguru
    • 3
  • Barada Kanta Mishra
    • 2
    • 4
  1. 1.Parala Maharaja Engineering College (A Constituent College of BPUT, Odisha)Sitalapalli, BrahmapurIndia
  2. 2.CSIR-Institute of Minerals and Materials TechnologyBhubaneswarIndia
  3. 3.KIIT UniversityBhubaneswarIndia
  4. 4.Indian Institute of Technology, GoaFarmagudi, PondaIndia

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