Russian Metallurgy (Metally)

, Volume 2018, Issue 3, pp 266–275 | Cite as

Effect of Pulsed Nitrogen Plasma and Nitrogen Ion Fluxes on the Structure and Mechanical Properties of Vanadium

  • I. V. BorovitskayaEmail author
  • V. Ya. Nikulin
  • G. G. Bondarenko
  • A. B. Mikhailova
  • P. V. Silin
  • A. I. Gaidar
  • V. V. Paramonova
  • E. N. Peregudova


The effect of powerful pulsed fluxes of nitrogen plasma and nitrogen ions generated in the PF-4 Plasma Focus setup (LPI; energy flux density of plasma pulse was 108–1010 W/cm2) on the modification of vanadium surface is studied. Melting and ultrafast solidification result in a fine cellular structure (cell size of 100–200 nm) in a thin surface layer in samples. There are irradiation regimes causing directional crack growth after solidification and cooling of the surface layer and the formation of a block microstructure with a block size of several tens of micrometers. The thickness of the melted layer in the samples is 2–4 μm. Cracks propagate to a depth of 5–20 μm. It is established that irradiation by pulsed nitrogen plasma and high-energy nitrogen ions changes the microhardness of the vanadium surface layers. The microhardness increases by a factor of three with the number of plasma pulses and the distance between a sample and the anode of the Plasma Focus (PF) setup. The increase in the microhardness is in agreement with the refinement of coherent scattering regions, the increase in lattice microstrain ε, and the formation of vanadium nitrides. Pulsed fluxes of nitrogen plasma and nitrogen ions decrease the lattice parameter much greater than cold working (rolling) does. The lattice parameter decreases when the total irradiation power is increased (the number of pulses increases or the distance between a sample and the anode of the PF setup decreases). Such changes seem to be caused by the action of the residual macrostresses induced by pulsed plasma irradiation. In addition, X-ray diffraction analysis showed a change in the texture of the surface layer after ion-plasma treatment of coldworked vanadium samples in the PF setup.


pulsed plasma nitrogen ions Plasma Focus setup vanadium structure modification ultrafast solidification 


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  1. 1.
    M. Chernyshova, V. A. Gribkov, E. Kowalska-Strzeciwilk, M. Kubkowska, R, Miklaszewski, M. Paduch, T. Pisarczyk, E. Zielinska, E. V. Demina, V. N. Pimenov, S. A. Maslyaev, G. G. Bondarenko, M. Vilemova, and J. Matejicek, “Interaction of powerful hot plasma and fast ion streams with materials in dense plasma focus devices,” Fusion Eng. Design. 113, 109–118 (2016).CrossRefGoogle Scholar
  2. 2.
    V. N. Pimenov, V. A. Gribkov, L. I. Ivanov, M. Shol’ts, Yu. E. Ugaste, E. V. Demina, S. A. Maslyaev, A. V. Dubrovskii, R. Miklashevskii, B. Kolman, and A. Kodentsov, “About new possibilities of dense plasma focus device using for modification of material surface layers,” Pers. Mater., No. 1, 13–23 (2003).Google Scholar
  3. 3.
    Shaista Zeb, A. Qayyum, Mehboob Sadiq, M. Shafiq, A. Waheed, and M. Zakaullah “Deposition of diamond-like carbon films using graphite sputtering in neon dense plasma,” Plasma Chem. Plasma Process. 27, 127–139 (2007).CrossRefGoogle Scholar
  4. 4.
    V. N. Kolokol’tsev, I. V. Borovitskaya, V. P. Sirotinkin, V. Ya. Nikulin, P. V. Silin, G. G. Bondarenko, A. I. Gaidar, A. A. Eriskin, and V. F. Degtyarev, “Spraying of the thin films on dielectric substrates with the use of pulsed plasma,” Fiz. Khim. Obrab. Mater., No. 5, 51–57 (2013).Google Scholar
  5. 5.
    J. M. Chen, V. M. Chernov, E. J. Kurtz, and T. Muroga, “Overview of the vanadium alloy researches for fusion reactors,” Nucl. Mater. 417 (1–3), 289–294 (2011).CrossRefGoogle Scholar
  6. 6.
    G. G. Bondarenko, Radiation Physics, Structure, and Strength of Solids (Laboratoriya Znanii, Moscow, 2016).Google Scholar
  7. 7.
    G. K. Williamson and W. H. Hall, “X-ray line broadening from filed aluminium and wolfram,” Acta Metall. 1 (1), 22–31 (1953).CrossRefGoogle Scholar
  8. 8.
    I. V. Borovitskaya, V. N. Pimenov, V. A. Gribkov, M. Padukh, G. G. Bondarenko, A. I. Gaidar, V. V. Paramonova, and E. V. Morozov, “Structural changes in the vanadium sample surface induced by pulsed high-temperature deuterium plasma and deuterium ion fluxes,” Russ. Metall. (Metally) No. 11, 928–935 (2017).CrossRefGoogle Scholar
  9. 9.
    L. I. Ivanov, I. V. Borovitskaya, A. I. Dedyurin, S. A. Maslyaev, O. N. Krokhin, V. Ya. Nikulin, A. A. Tikhomirov, I. V. Yaminskii, and O. V. Sinitsina “The composition and morphology of the sapphire surface after pulsed high-temperature plasma treatment,” Fiz. Khim. Obrab. Mater., No. 1, 32–37 (2008).Google Scholar
  10. 10.
    A. V. Voronin, Yu. V. Sud’enkov, B. N. Semenov, S. A. Atroshenko, and N. S. Naumova, “Degradation of tungsten under the action of a plasma jet,” Tech. Phys. 59, 981–988 (2014).CrossRefGoogle Scholar
  11. 11.
    I. I. Novikov, Theory of Heat Treatment of Metals (Metallurgiya, Moscow, 1986).Google Scholar
  12. 12.
    V. N. Pimenov, V. V. Roschupkin, S. A. Maslyaev, E. V. Demina, M. M. Lyakhovitskii, V. A. Gribkov, A. V. Dubrovskii, and I. P. Sasinovskaya, “Surface effects under the action of pulsed beams of nitrogen ions and nitrogen plasma on Ti–Al–V alloy,” Inorg. Mater. Appl. Res., 3 (2), 166–172 (2012).CrossRefGoogle Scholar
  13. 13.
    M. M. Grekhov, “Structural and textural changes induced by ion–plasma irradiation in Zr-based alloys and determined by X-ray diffraction,” Extended Abstract of Cand. Sci. (Physi.–Math.) Dissertation, Inst. Eng. Phys., Moscow, 2009.Google Scholar
  14. 14.
    Yu. A. Perlovich, M. M. Grekhov, M. G. Isaenkova, V.V. Fesenko, B. A. Kalin, and V. L. Yakushin, “Change in structure and texture in the cladding tubes’ volume of zirconium-based alloys in ion-plasma treatment of the surface,” Vopr. At. Nauki Tekh., Ser. Fiz. Radiats. Povrezhdenii Radiats. Materialoved., 85 (3), 59–65 (2004).Google Scholar

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© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • I. V. Borovitskaya
    • 1
    Email author
  • V. Ya. Nikulin
    • 2
  • G. G. Bondarenko
    • 3
  • A. B. Mikhailova
    • 1
  • P. V. Silin
    • 2
  • A. I. Gaidar
    • 4
  • V. V. Paramonova
    • 1
  • E. N. Peregudova
    • 2
  1. 1.Baikov Institute of Metallurgy and Materials ScienceRussian Academy of SciencesMoscowRussia
  2. 2.Lebedev Physical Institute (LPI)Russian Academy of SciencesMoscowRussia
  3. 3.Higher School of EconomicsNational Research UniversityMoscowRussia
  4. 4.Research Institute of Advanced Materials and TechnologiesMoscowRussia

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