Antibacterial Treatment of the Titanium with Ar$^+$ Ions
M. A. Vasylyev$^{1}$, S. I. Sidorenko$^{1}$, S. M. Voloshko$^{1}$, V. S. Filatova$^{2}$, P. A. Gurin$^{3}$
$^{1}$National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, 37 Peremohy Ave., UA-03056 Kyiv, Ukraine
$^{2}$G. V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine
$^{3}$Shupyk National Medical Academy of Postgraduate Education, 9 Dorohozhytska Str., UA-04112 Kyiv, Ukraine
Received: 03.10.2019. Download: PDF
In the present work, the physic-chemical characteristics of the titanium (VT1-0) and titanium alloy (VT6) surfaces are studied after the following external influences: 1) mechanical polishing; 2) bombardment by Ar$^+$ ions (energy 6 keV, irradiation dose 5$\cdot10^{19}$ ion$\cdot$cm$^{-2}$); 3) the deposition of the $S. aureus$ bacteria on a polished surface; 4) the deposition of the $S. aureus$ bacteria on the surface treated with ions. Layer-by-layer changes in the chemical composition and morphology of the samples’ surface layers after mentioned treatments are analysed by Auger electron spectroscopy and scanning electron microscopy. The effects of surface passivation and the decrease in the number of the adherent bacteria as a result of bombardment by Ar$^+$ ions, as well as significant changes in the surface structure are established. Modern ideas about the mechanisms of the interaction in the system of the metal/bacteria are presented.
Key words: titanium surface, pathogenic bacteria, ion bombardment, Auger electron spectroscopy, scanning electron microscopy.
URL: http://mfint.imp.kiev.ua/en/abstract/v42/i02/0215.html
DOI: https://doi.org/10.15407/mfint.42.02.0215
PACS: 61.80.Jh, 68.35.bd, 68.35.Ct, 68.37.Ps, 68.43.-h, 79.20.Rf
Citation: M. A. Vasylyev, S. I. Sidorenko, S. M. Voloshko, V. S. Filatova, and P. A. Gurin, Antibacterial Treatment of the Titanium with Ar$^+$ Ions, Metallofiz. Noveishie Tekhnol., 42, No. 2: 215—236 (2020) (in Russian)