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Journal of Advances in Applied Physics
JAAP > Volume 2, Number 1, February 2020

Characterization of Titanium Dioxide Coatings Obtained by Vacuum-arc Deposition

Download PDF  (1910.4 KB)PP. 1-8,  Pub. Date:January 15, 2020
DOI: 10.22606/jaap.2020.21001

Author(s)
Anton Taran, Igor Garkusha, Alexander Timoshenko, Valerij Taran, Ivan Misiruk, Tamara Skoblo, Svetlana Romaniuk, Taras Maltsev, Vadym Starikov, Alexey Baturin, Yurij Gnidenko
Affiliation(s)
National Science Center “Kharkov Institute of Physics and Technology” (NSC KIPT), Institute of Plasma Physics, Kharkov, Ukraine
National Science Center “Kharkov Institute of Physics and Technology” (NSC KIPT), Institute of Plasma Physics, Kharkov, Ukraine; Karazin State University, Kharkov, Ukraine
National Science Center “Kharkov Institute of Physics and Technology” (NSC KIPT), Institute of Plasma Physics, Kharkov, Ukraine
National Science Center “Kharkov Institute of Physics and Technology” (NSC KIPT), Institute of Plasma Physics, Kharkov, Ukraine
National Science Center “Kharkov Institute of Physics and Technology” (NSC KIPT), Institute of Plasma Physics, Kharkov, Ukraine
National Technical University of Agriculture, Kharkov, Ukraine
National Technical University of Agriculture, Kharkov, Ukraine
National Technical University of Agriculture, Kharkov, Ukraine
National Technical University “Kharkov Polytechnical Institute”,Kharkov, Ukraine
National Technical University “Kharkov Polytechnical Institute”,Kharkov, Ukraine
Karazin State University, Kharkov, Ukraine
Abstract
TiO2 coatings on AISI 430 stainless steel were produced by the vacuum-arc deposition technique with the application of modified curvilinear magnetic filter allowed enhanced deposition rates up to 50 μm/ hour decreasing the amount of macroparticles. The structure, chemical and phase composition of the obtained coatings was investigated using SEM with EDX, XRF and XRD analysis. According to X-ray diffraction analysis, the formation of stoichiometric TiO2 phase took place. The mechanical and tribological properties were established. The obtained coatings had average nanohardness of 13.8 GPa and Young’s modulus of 211 GPa. Dry friction wear tests revealed high resistance of the coating to wear showing low friction coefficient under a load of 50 N. The statistical results of photo-catalytic activity showed a significant decrease of E.coli colonies on samples coated with TiO2 during 20 min UV exposure format.
Keywords
Titanium dioxide, structure, vacuum-arc deposition, coating, phase composition, nanohardness, photocatalytic activity
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