A. A. Fomin, M. A. Fomina, I. V. Rodionov, V. A. Koshuro, E. Yu. Podshivalova, A. Yu. Shchelkunov, A. A. Skaptsov, A. M. Zakharevich, V. S. Atkin, “Superhard oxide coatings formed on titanium treated by high-frequency currents”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 2015, Volume 41, Issue 18,Pages <nobr>89

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Superhard oxide coatings formed on titanium treated by high-frequency currents

A. A. Fomin^a, M. A. Fomina^a, I. V. Rodionov^a, V. A. Koshuro^a, E. Yu. Podshivalova^a, A. Yu. Shchelkunov^a, A. A. Skaptsov^b, A. M. Zakharevich^b, V. S. Atkin^b

^a Yuri Gagarin State Technical University of Saratov
^b Saratov State University

Abstract: We have studied the hardness and elastic modulus of rutile (TiO$_2$) oxide coatings formed on the surface of commercial grade VT1-00 titanium treated by high-frequency current (HFC). The mechanism of formation of superhard oxide coatings with thicknesses within 2–3 $\mu$m and submicron-grained structure consisting of prismatic crystallites with dimensions of 200–400 nm. It is established that, at high temperatures (within 1000–1200$^\circ$C) and short HFC treatment durations (30–300 s), the oxide coatings are characterized by hardnesses of about 61–78 GPa and elastic moduli within 330–680 GPa.

Received: 21.04.2015