Effect of alternate irradiation with O+ and n+ ions on the composition, structure, and electrochemical properties of a Ti–Al–V alloy

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Abstract

the chemical composition, surface morphology and electrochemical properties of the Ti–Al–V alloy in the initial state and after irradiation with O+ ions and alternating irradiation with O+ and N+ ions with different doses of irradiation dose of N+ ions are studied. Under irradiation with O+ ions, the active oxidation of Ti atoms is shown to occurs, which is accompanied by the formation of titanium oxides and hydroxides. In the course of subsequent irradiation with N+ ions, the accumulation of nitrogen and formation of titanium nitride TiN are found to occur to lower concentrations as compared to those observed without the preliminary irradiation with O+ ions. It is assumed that this is due to the higher chemical activity of oxygen with respect to titanium atoms, as compared to that of nitrogen.

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About the authors

V. L. Vorob'ev

Udmurt Federal Research Center, Ural Branch, Russian Academy of Sciences

Author for correspondence.
Email: Vasily_L.84@udman.ru
Russian Federation, 426067, Izhevsk

V. S. Gladysheva

Udmurt Federal Research Center, Ural Branch, Russian Academy of Sciences

Email: Vasily_L.84@udman.ru
Russian Federation, 426067, Izhevsk

P. V. Bykov

Udmurt Federal Research Center, Ural Branch, Russian Academy of Sciences

Email: Vasily_L.84@udman.ru
Russian Federation, 426067, Izhevsk

S. G. Bystrov

Udmurt Federal Research Center, Ural Branch, Russian Academy of Sciences

Email: Vasily_L.84@udman.ru
Russian Federation, 426067, Izhevsk

I. N. Klimova

Udmurt Federal Research Center, Ural Branch, Russian Academy of Sciences

Email: Vasily_L.84@udman.ru
Russian Federation, 426067, Izhevsk

A. V. Syugaev

Udmurt Federal Research Center, Ural Branch, Russian Academy of Sciences

Email: Vasily_L.84@udman.ru
Russian Federation, 426067, Izhevsk

А. А. Kolotov

Udmurt Federal Research Center, Ural Branch, Russian Academy of Sciences

Email: Vasily_L.84@udman.ru
Russian Federation, 426067, Izhevsk

V. Ya. Bayankin

Udmurt Federal Research Center, Ural Branch, Russian Academy of Sciences

Email: Vasily_L.84@udman.ru
Russian Federation, 426067, Izhevsk

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Supplementary files

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2. Fig. 1. Distribution profiles in samples of titanium alloy VT6 before implantation (a) and after implantation of N+ ions (b).

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3. Fig. 2. Profiles of the distribution of elements in VT6 alloy samples after implantation of O+ ions (a), after alternate irradiation with O+ and N+ ions with a dose of N+ 1018 ions/cm2 (b) and after alternate irradiation with O+ and N+ ions with a dose of N+ 3·1018 ions/cm2 (in).

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4. Fig. 3. Nitrogen distribution profiles in VT6 samples combined in one graph: 1 –implantation of N+ ions, 2 – implantation of O+ and N+ ions with a dose of N+ 3·1018 ions/cm2, 3 – implantation of O+ and N+ ions with a dose of N+ 1018 ions/cm2.

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5. Fig. 4. XFE spectrum of O 1s obtained from a depth of ~ 20 nm in the BT6 sample after implantation of N+ (a), after alternate irradiation with O+ and N+ ions with a dose of N+ 1018 ions/cm2 (b), after alternate irradiation with O+ and N+ ions the dose of ions is N+ 3·1018 ions / cm2 (in).

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6. Fig. 5. The XFE spectrum of N 1s obtained from a depth of ~20 nm in the BT6 sample after implantation of N+ (a), after alternate irradiation with O+ and N+ ions with a dose of N+ 1018 ions/cm2 (b), after alternate irradiation with O+ and N+ ions the dose of ions is N+ 3·1018 ions / cm2 (in).

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7. Fig. 6. The RF spectrum of Ti 2p obtained from a depth of ~ 20 nm in the initial BT6 sample (1), in the BT6 sample after implantation of N+ ions (2), after alternate irradiation with a dose of N+ 1018 ions/cm2 (3), after alternate irradiation with a dose of N ions+ 3·1018 ion/cm2 (4).

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8. Fig. 7. AFM images of the surface of a sample of titanium alloy VT6 before implantation (a), after implantation of O+ ions (b), after alternate irradiation with a dose of N+ 1018 ions/cm2 (c) and after alternate irradiation with a dose of N+ 3·1018 ions/cm2 (d).

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9. Fig. 8. Block size distributions on the surface of samples of titanium alloy VT6 before implantation (a), after implantation of O+ ions (b), after alternate irradiation with O+ and N+ ions with a dose of N+ 1018 ions/cm2 (c), after alternate irradiation with O+ and N+ ions with a dose of N+ 3·1018 ions/cm2 (g).

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10. Fig. 9. Voltage curves obtained from samples in 3.5% NaCl solution on a logarithmic scale: 1 – the initial sample, 2 – after irradiation with O+ ions, 3 – after alternate irradiation with O+ and N+ ions with a dose of N+ 1018 ions/cm2, 4 – after alternate ion irradiation O+ and N+ with a dose of N+ ions 3· 1018 ions/cm2.

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