Surface modification and sputtering of FeCrAl alloys exposed to low-energy hydrogen plasmas

  • Galina D. Tolstolutskaya Institute of Solid State Physics, Material Science and Technology, National Science Center «Kharkov Institute of Physics and Technology», 1 Akademicheskaya Street, Kharkіv 61108, Ukraine https://orcid.org/0000-0003-3091-4033
  • Michael A. Tikhonovsky Institute of Solid State Physics, Material Science and Technology, National Science Center «Kharkov Institute of Physics and Technology», 1 Akademicheskaya Street, Kharkіv 61108, Ukraine
  • Victor N. Voyevodin Institute of Solid State Physics, Material Science and Technology, National Science Center «Kharkov Institute of Physics and Technology», 1 Akademicheskaya Street, Kharkіv 61108, Ukraine; V. N. Karazin Kharkiv National University, 4 Svobody Square, Kharkiv 61022, Ukraine
  • Arkadiy V. Nikitin Institute of Solid State Physics, Material Science and Technology, National Science Center «Kharkov Institute of Physics and Technology», 1 Akademicheskaya Street, Kharkіv 61108, Ukraine
  • Aleksander S. Tortika Institute of Solid State Physics, Material Science and Technology, National Science Center «Kharkov Institute of Physics and Technology», 1 Akademicheskaya Street, Kharkіv 61108, Ukraine
  • Ruslan L. Vasilenko Institute of Solid State Physics, Material Science and Technology, National Science Center «Kharkov Institute of Physics and Technology», 1 Akademicheskaya Street, Kharkіv 61108, Ukraine
DOI: https://doi.org/10.33581/2520-2243-2019-3-73-80

Abstract

In the present paper processes of sputtering and surface modification of commercial and experimental FeCrAl composites alloyed with yttrium, molybdenum and zirconium were investigated. Using a field-emission scanning electron microscope, it was shown that under the influence of low-energy (500 eV) hydrogen plasma with a flux about 3.2 ⋅ 1020 m–2 ⋅ s–1 and fluence 4 ⋅ 1024 m–2 at Troom, surface morphology develops due to the formation of grooves along grain boundaries, macro- and microcracks, as well as intragranular pits due to the sputtering of precipitates. Determination of the composition of precipitates by an energy dispersive X-ray spectrometer allowed to establish that aluminum oxide is preferentially distributed in the grains of FeCrAl-based alloys, and yttrium oxides are localized along grain boundaries. Results of erosion studies indicated that the sputtering yields for hydrogen on all alloys are 1.05– 0.38 at./ion and doesn’t exceed those for published data for pure iron and chromium. For experimental alloys doped with yttrium and molybdenum found that the obtained sputtering coefficients were in several times lower than for steel SS304 and only one and a half times higher compared to tungsten.

Author Biographies

Galina D. Tolstolutskaya, Institute of Solid State Physics, Material Science and Technology, National Science Center «Kharkov Institute of Physics and Technology», 1 Akademicheskaya Street, Kharkіv 61108, Ukraine

doctor of science (physics and mathematics), full professor; head of the laboratory of physics of interaction of ion beams with materials

Michael A. Tikhonovsky, Institute of Solid State Physics, Material Science and Technology, National Science Center «Kharkov Institute of Physics and Technology», 1 Akademicheskaya Street, Kharkіv 61108, Ukraine

PhD (physics and mathematics); head of the laboratory of nanomaterials

Victor N. Voyevodin, Institute of Solid State Physics, Material Science and Technology, National Science Center «Kharkov Institute of Physics and Technology», 1 Akademicheskaya Street, Kharkіv 61108, Ukraine; V. N. Karazin Kharkiv National University, 4 Svobody Square, Kharkiv 61022, Ukraine

corresponding member of the National Academy of Sciences of Ukraine, doctor of science (physics and mathematics), full professor; director at the Institute of Solid State Physics, Material Science and Technology, National Science Center «Kharkov Institute of Physics and Technology», and professor at the department of structural reactor materials and physical technology, faculty of physics and technology, V. N. Karazin Kharkiv National University

Arkadiy V. Nikitin, Institute of Solid State Physics, Material Science and Technology, National Science Center «Kharkov Institute of Physics and Technology», 1 Akademicheskaya Street, Kharkіv 61108, Ukraine

PhD (physics and mathematics); researcher at the laboratory of physics of interaction of ion beams with materials

Aleksander S. Tortika, Institute of Solid State Physics, Material Science and Technology, National Science Center «Kharkov Institute of Physics and Technology», 1 Akademicheskaya Street, Kharkіv 61108, Ukraine

head of the group at the laboratory of nanomaterials

Ruslan L. Vasilenko, Institute of Solid State Physics, Material Science and Technology, National Science Center «Kharkov Institute of Physics and Technology», 1 Akademicheskaya Street, Kharkіv 61108, Ukraine

junior researcher at the laboratory of electron-microscopic investigations of the structure of irradiated materials

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Published
2019-10-03
Keywords: FeCrAl ferritic alloys, hydrogen plasma, surface morphology, erosion, sputtering yield
Supporting Agencies The work was financially supported by the National Academy of Sciences of Ukraine (program «Support of the development of main lines of scientific investigations» (KPKVK 6541230)).
How to Cite
Tolstolutskaya, G. D., Tikhonovsky, M. A., Voyevodin, V. N., Nikitin, A. V., Tortika, A. S., & Vasilenko, R. L. (2019). Surface modification and sputtering of FeCrAl alloys exposed to low-energy hydrogen plasmas. Journal of the Belarusian State University. Physics, 3, 73-80. https://doi.org/10.33581/2520-2243-2019-3-73-80
Issue
No 3 (2019): Journal of the Belarusian State University. Physics
Section
Condensed State Physics

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