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Cold Sintering of Ni–Ag Nanocomposite Particles Produced by Electric Explosion of Wires

  • COMPOSITE MATERIALS
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Inorganic Materials: Applied Research Aims and scope

Abstract

77 Ni–23 Ag nanocomposite powder as well as nanopowders of Ni and Ag were produced by electric explosion of wires, and compacted specimens were made with the help of a cold sintering method at a high pressure. It is shown that electric explosion results in formation of mainly janus-nanoparticles of immiscible Ni and Ag metals with retention of nanostructure in consolidated bulk specimens. Microstructure and mechanical properties of cold sintered specimens prepared from as prepared and heat treated in hydrogen flow have been studied. It is ascertained that treatment of 70% dense compacts in hydrogen flow results in higher density and higher ductility of cold sintered specimens. Density of cold sintered at 3 GPa pressure 77 Ni–23 Ag and Ni specimens was reached about 95% from theoretical value whereas the density of Ag specimens is close to 100% of that. High strength was obtained under three-point bending tests and in compression tests.

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FUNDING

The synthesis and study of bimetallic 77 Ni–23 Ag particles and specimens made of them were carried out under the financial support of the Russian Science Foundation (project no. 17-19-01319). The synthesis and study of Ni nanoparticles and specimens made of them were carried out within the Program of Fundamental Scientific Research of the State Academies of Sciences for 2013–2020, direction III.23.

CONFLICT OF INTERESTS

The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, 634021, Tomsk, Russia

    A. F. Sharipova, O. V. Bakina, A. S. Lozhkomoev, E. A. Glazkova, A. V. Pervikov, N. V. Svarovskaya, M. I. Lerner, S. G. Psakhie, I. Gotman & E. Y. Gutmanas

  2. Technion—Department of Materials Science and Engineering, Israel Institute of Technology, Technion City, 32000, Haifa, Israel

    A. F. Sharipova & E. Y. Gutmanas

  3. Department of Mechanical Engineering, ORT Braude College, 21982, Karmiel, Israel

    I. Gotman

Authors
  1. A. F. Sharipova
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  2. O. V. Bakina
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  3. A. S. Lozhkomoev
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  4. E. A. Glazkova
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  5. A. V. Pervikov
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  6. N. V. Svarovskaya
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  7. M. I. Lerner
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  8. S. G. Psakhie
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  9. I. Gotman
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  10. E. Y. Gutmanas
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Corresponding authors

Correspondence to A. F. Sharipova, O. V. Bakina, A. S. Lozhkomoev, E. A. Glazkova, A. V. Pervikov, N. V. Svarovskaya, M. I. Lerner, S. G. Psakhie, I. Gotman or E. Y. Gutmanas.

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Translated by E. Oborin

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Sharipova, A.F., Bakina, O.V., Lozhkomoev, A.S. et al. Cold Sintering of Ni–Ag Nanocomposite Particles Produced by Electric Explosion of Wires. Inorg. Mater. Appl. Res. 10, 691–698 (2019). https://doi.org/10.1134/S2075113319030389

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  • DOI: https://doi.org/10.1134/S2075113319030389

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