Journal of Advances in Applied Physics

Download PDF (1910.4 KB) PP. 1 - 8 Pub. Date: February 1, 2020

DOI: 10.22606/jaap.2020.21001

• Anton Taran^*
  National Science Center “Kharkov Institute of Physics and Technology” (NSC KIPT), Institute of Plasma Physics, Kharkov, Ukraine
• Igor Garkusha
  National Science Center “Kharkov Institute of Physics and Technology” (NSC KIPT), Institute of Plasma Physics, Kharkov, Ukraine; Karazin State University, Kharkov, Ukraine
• Alexander Timoshenko
  National Science Center “Kharkov Institute of Physics and Technology” (NSC KIPT), Institute of Plasma Physics, Kharkov, Ukraine
• Valerij Taran
  National Science Center “Kharkov Institute of Physics and Technology” (NSC KIPT), Institute of Plasma Physics, Kharkov, Ukraine
• Ivan Misiruk
  National Science Center “Kharkov Institute of Physics and Technology” (NSC KIPT), Institute of Plasma Physics, Kharkov, Ukraine
• Tamara Skoblo
  National Technical University of Agriculture, Kharkov, Ukraine
• Svetlana Romaniuk
  National Technical University of Agriculture, Kharkov, Ukraine
• Taras Maltsev
  National Technical University of Agriculture, Kharkov, Ukraine
• Vadym Starikov
  National Technical University “Kharkov Polytechnical Institute”,Kharkov, Ukraine
• Alexey Baturin
  National Technical University “Kharkov Polytechnical Institute”,Kharkov, Ukraine
• Yurij Gnidenko
  Karazin State University, Kharkov, Ukraine

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.

Titanium dioxide, structure, vacuum-arc deposition, coating, phase composition, nanohardness, photocatalytic activity

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