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Information × Registration Number 0224U000252, 0122U002658 , R & D reports Title The structural evolution and properties of (TiNbMoTaW)N/WS2 high entropy alloy multilayer nitride coatings popup.stage_title Head Pohrebniak Oleksandr D., Доктор фізико-математичних наук Registration Date 04-01-2024 Organization Sumy State University popup.description2  The main result is that the AlCrNbSiTi coatings, deposited using radio-frequency magnetron sputtering, exhibit excellent protective properties. All coatings have a smooth surface without noticeable elemental segregation, and the columnar structure becomes denser with increasing bias voltage. The coatings possess a nanocomposite structure of amorphous-nanocrystalline silicides, which is in agreement with the results calculated based on three-phase prediction parameters. Among the coatings, the one deposited at a bias voltage of -50 V demonstrates optimal mechanical properties, including a nanohardness of approximately 15.2 GPa, scratch crack propagation resistance of 1042 N2, and a low wear rate of 5.4 × 10^-8 mm3N^-1m^-1. Additionally, annealing treatment reveals that the presence of hard silicides contributes to the coatings' super-hardness of approximately 24 GPa. These results confirm that the AlCrNbSiTi coatings can be considered as promising protective coatings with broad industrial application prospects. The scientific novelty lies in the first-time analysis of properties and microstructure of coatings based on high-entropy alloys AlCrNbSiTi, deposited by physical vapor deposition, including their morphology, chemical composition, mechanical properties, and thermal stability Product Description popup.authors Borba-Pogrebnjak Svitlana O. Buranich Volodymyr V. Pohrebniak Oleksandr D. Smyrnova Katerina V. popup.nrat_date 2024-01-04 Close