Physicochemical State of the Ti6Al4V Surface after Sand Blasting in Liquid Nitrogen

M. O. Vasylyev$^{1}$, L. F. Yatsenko$^{1}$, S. M. Voloshko$^{2}$, P. O. Gurin$^{3}$

$^{1}$G.V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Blvd., UA-03680 Kyiv-142, Ukraine
$^{2}$National Technical University of Ukraine ‘KPI’, 37 Peremohy Ave., 03056 Kyiv, Ukraine
$^{3}$Institute of Dentistry, P.L. Shupyk National Medical Academy of Postgraduate Education, 10A Pymonenko Str., 03046 Kyiv, Ukraine

Received: 09.03.2016. Download: PDF

Firstly, the sand blasting (SB) of the titanium alloy Ti6Al4V surface at the temperature of liquid nitrogen (-196°C) is performed. For comparison, a standard treatment is used as the SB in the air under the same parameters and duration. As shown, the major differences concern microhardness changes, roughness, character of morphology, and amount of the residual abrasive particles of Al$_{2}$O$_{3}$ on the surface. The chemical composition in the different local areas of the alloy surface after the SB at room and cryogenic temperatures is studied in detail as well as a degree of surface oxidation. It is planned to obtain experimental evidence regarding the fact that the low-temperature SB improves the wear resistance of dental implants in chewing loads, the corrosion resistance, and the adhesion strength of biocompatible coatings applied to titanium substrate after the SB in liquid nitrogen, and thus, contributes significantly longer service life.

Key words: sand blasting, implant, surface, cryodeformation, Ti$_{6}$Al$_{4}$V alloy.



PACS:, 68.35.Ct, 68.35.Dv, 81.40.Lm, 81.65.-b, 83.50.Uv, 87.85.jj

Citation: M. O. Vasylyev, L. F. Yatsenko, S. M. Voloshko, and P. O. Gurin, Physicochemical State of the Ti6Al4V Surface after Sand Blasting in Liquid Nitrogen, Metallofiz. Noveishie Tekhnol., 38, No. 5: 683—695 (2016) (in Ukrainian)

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