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Постійне посилання на розділhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/35393
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Документ Synthesis and characterisation of nanocrystalline ZrN PVD coatings on AISI 430 stainless steel(National Science Center "Kharkov Institute of Physics and Technology", 2019) Taran, A. V.; Garkusha, I. E.; Taran, V. S.; Muratov, R. M.; Skoblo, T. S.; Romaniuk, S. P.; Starikov, V. V.; Baturin, A. A.The nanocrystalline films of zirconium nitride have been synthesized using ion-plasma vacuum-arc deposition technique in combination with high-frequency discharge (RF) on AISI 430 stainless steel at 150oC. Structure examinations X-ray fluorescent analysis (XRF), X-ray diffraction analysis (XRD), scanning electron microscopy (SEM) with microanalysis (EDS), and transmission electron microscopy (TEM), nanoidentation method – were performed to study phase and chemical composition, surface morphology, microstructure and nanohardness of coatings. The developed technology provided low-temperature coatings synthesis, minimized discharge breakdown decreasing formation of macroparticles (MPs) and allowed to deposit ZrN coatings with hardness variation 26.6…31.5 GPa. It was revealed that ZrN single-phase coatings of cubic modification with finecrystalline grains of 20 nm in size were formed.Документ Anti-corrosion ceramic coatings on the surface of Nd-Fe-B repelling magnets(National Science Center "Kharkov Institute of Physics and Technology", 2019) Taran, A. V.; Garkusha, I. E.; Taran, V. S.; Timoshenko, O. I.; Misiruk, I. O.; Skoblo, T. S.; Romaniuk, S. P.; Starikov, V. V.; Baturin, A. A.; Nikolaychuk, G. P.; Pyvovar, N. V.; Gnidenko, Yu. P.The results of vacuum-arc deposition of thin ZrO₂coatings to protect the surface of Nd-Fe-B permanent magnets used as repelling devices in orthodontics are presented. The structure, phase composition and mechanical properties of zirconium dioxide films have been investigated by means of SEM, XRD, EDX, XRF and nanoindentation method. It was revealed the formation of polycrystalline ZrO₂ films of monoclinic modification with average grain size 25 nm. The influence of the ZrO₂ coating in terms of its barrier properties for corrosion in quasi-physiological 0.9 NaCl solution has been studied. Electrochemical measurements indicated good barrier properties of the coating on specimens in the physiological solution environment.