Effect of the Accelerating Voltage during Pulsed Irradiation
with Cr⁺ Ions on the Surface Layer Composition
of Carbon Steel St3

V. L. Vorob’ev^a, *, P. V. Bykov^a, V. Ya. Bayankin^a, S. G. Bystrov^a,
V. E. Porsev^a, and O. A. Bureev^b

^a Physical-Technical Institute, Ural Branch of the Russian Academy of Sciences,
ul. Kirova 132, Izhevsk, 426000 Republic of Udmurtia, Russia

* e-mail: Vasily_L.84@mail.ru

^b Institute of Electrophysics, Ural Branch of the Russian Academy of Sciences,
ul. Amundsena 106, Yekaterinburg, 620016 Russia

Received June 30, 2014; in final form, September 24, 2014

Abstract—The formation of Cr₂O₃, CrO₂, CrO₃ and FeO, Fe₂O₃ oxides in surface layers of steel St3 samples
irradiated with Cr⁺ ions has been revealed. The oxide content decreases with increasing accelerating voltage,
which is caused by a more intense surface sputtering and a temperature increase. It has been found that the hard-
ness of a surface layer ~250 nm deep increases by 20% after irradiation with an accelerating voltage of 20kV.

DOI: 10.1134/S1063783415030361

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