Rafał Chodun, Katarzyna Nowakowska-Langier and Krzysztof Zdunek
This paper presents the effects of elimination of current oscillations within the coaxial plasma accelerator during IPD deposition process on the morphology, phase structure and properties of synthesized TiN coatings. Current observations of waveforms have been made by use of an oscilloscope. As a test material for experiments, titanium nitride TiN coatings synthesized on silicon and high-speed steel substrates were used. The coatings morphology, phase composition and wear resistance properties were determined. The character of current waveforms in the plasma accelerator electric circuit plays a crucial role during the coatings synthesis process. Elimination of the current oscillations leads to obtaining an ultrafine grained structure of titanium nitride coatings and to disappearance of the tendency to structure columnarization. The coatings obtained during processes of a non-oscillating character are distinguished by better wear-resistance properties.
Janette Brezinová, Anna Guzanová, Dagmar Draganovská, Pavlo O. Maruschak and Mariana Landová
The paper presents results of research of the essential characteristics of two kinds of advanced coatings applied by HVOF technology. One studied coating: WB-WC-Co (60-30-10%) contains two types of hard particles (WC and WB), the second coating is eco-friendly alternative to the previously used WC-based coatings, called “green carbides” with the composition WC-FeCrAl (85-15%). In green carbides coating the heavy metals (Co, Ni, NiCr) forming the binding matrix in conventional wear-resistant coatings are replaced by more environmentally friendly matrix based on FeCrAl alloy. On the coatings was carried out: metallographic analysis, measurement of thickness, micro-hardness, adhesion, resistance to thermal cyclic loading and adhesive wear resistance (pin-on-disk test). One thermal cycle consisted of heating the coatings to 600°C, dwell for 10 minutes, and subsequently cooling on the still air. The number of thermal cycles: 10. The base material was stainless steel AISI 316L, pretreatment prior to application of the coating: blasting with white corundum, application device JP-5000.
J. Lubinski, K. Druet, A. Olszewski, A. Neyman and J. Sikora
C. Richard, C. Kowandy, J. Landoulsi, M. Geetha, H. Ramasawmy, Corrosion and wear behavior of thermally sprayed nano ceramic coatings on commercially pure Titanium and Ti-13Nb-13Zr substrates, Int. Journal of Refractory Metals & Hard Materials Vol. 28, pp. 115-123, (2010)
W. Österle, D. Klaffke, M. Griepentrog, U. Gross, I. Kranz, Ch. Knabe, Potential of wearresistantcoatings on Ti-6Al-4V for artificial hip joint bearing surfaces, Wear Vol. 264, pp. 505-517 (2008).
T. Lubinski, Testing of friction dynamics on a
D. Morozow, J. Narojczyk, M. Rucki and S. Lavrynenko
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7. Huang X., Etsion I., Shao T., Effects of elastic modulus mismatch between coating and substrate on the friction and wear properties of TiN and TiAlN coating systems. Wear, 338-339 (2015) 54-61.
8. PalDey S., Deevi S.C., Single layer and multilayer wearresistantcoatings of (Ti, Al)N: A
Mykhailo Student, Andriy Vojtovych, Hanna Pokhmurska, Olena Maruschak, Oleksandra Student and Pavlo Maruschak
., Panin, V. E. “Defect Accumulation in Nanoporous Wear-ResistantCoatings Under Collective Recrystallization: Simulation by Hybrid Cellular Automaton Method”, In: Hsueh C. H. et al. (eds) Handbook of Mechanics of Materials, Springer, Singapore, pp. 1 – 35, 2018 . DOI: 10.1007/978-981-10-6855-3_72-1
 Panin, S., Vlasov, I., Dudina, D., Ulianitsky, V., Stankevich, R., Batraev, I., Berto, F. “Mechanical characterization of composite coatings formed by reactive detonation spraying of titanium”, Metals 7 (9), 355, 2017 . DOI: 10.3390/met7090355