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Pisma v Zhurnal Tekhnicheskoi Fiziki, 2016, Volume 42, Issue 18, Pages 10–16
(Mi pjtf6298)
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This article is cited in 19 scientific papers (total in 19 papers)
Micro- and nanostructure of a titanium surface electric-spark-doped with tantalum and modified by high-frequency currents
A. A. Fomina, M. A. Fominaa, V. A. Koshuroa, I. V. Rodionova, A. V. Voikoa, A. M. Zakharevichb, A. Amancd, A. Oseevcd, S. Hirschcd, S. Majcherekcd a Yuri Gagarin State Technical University of Saratov
b Saratov State University
c University of Applied Sciences, Brandenburg, Germany
d Otto-von-Guericke-Universität Magdeburg, Germany
Abstract:
We have studied the characteristics of the porous microstructure of tantalum coatings obtained by means of electric spark spraying on the surface of commercial grade titanium. It is established that, at an electric spark current within 0.8–2.2 A, a mechanically strong tantalum coating microstructure is formed with an average protrusion size of 5.1–5.4 $\mu$m and pore sizes from 3.5 to 9.2 $\mu$m. On the nanoscale, a structurally heterogeneous state of coatings has been achieved by subsequent thermal modification at 800–830$^\circ$C with the aid of high-frequency currents. A metal oxide nanostructure with grain sizes from 40 to 120 nm is formed by short-time ($\sim$30 s) thermal modification. The coating hardness reaches 9.5–10.5 GPa at an elastic modulus of 400–550 GPa.
Received: 29.04.2016
Citation:
A. A. Fomin, M. A. Fomina, V. A. Koshuro, I. V. Rodionov, A. V. Voiko, A. M. Zakharevich, A. Aman, A. Oseev, S. Hirsch, S. Majcherek, “Micro- and nanostructure of a titanium surface electric-spark-doped with tantalum and modified by high-frequency currents”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 42:18 (2016), 10–16; Tech. Phys. Lett., 42:9 (2016), 932–935
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https://www.mathnet.ru/eng/pjtf6298 https://www.mathnet.ru/eng/pjtf/v42/i18/p10
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Abstract page: | 41 | Full-text PDF : | 17 |
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