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Information × Registration Number 0226U002599, (0125U000622) , R & D reports Title Development of an integrated technology for formation of wear-resistant coatings based on NiTi and TiAl intermetallics on titanium alloy parts popup.stage_title Газодинамічне напилювання покриттів на титанові сплави Head Savchenko Nina V., Кандидат фізико-математичних наук Registration Date 02-03-2026 Organization National Aerospace University "Kharkiv Aviation Institute" popup.description1 To increase the wear resistance of titanium alloy parts by developing an integrated technology for the formation of NiTi and TiAl intermetallic coatings from homo- or heterogeneous (composite) powders by cold gas-dynamic spraying with post-laser or -thermal treatment popup.description2 Within the first stage of the research, a new concept for creating wear-resistant coatings on titanium alloy aircraft parts was developed. The core idea is to employ the cold gas-dynamic spraying method for metal powders, followed by laser or thermal treatment to synthesize intermetallics – compounds with unique mechanical properties. The optimal operating regimes of supersonic nozzles were substantiated using modern computational fluid dynamics (CFD) and an analytical model. The study of temperature-velocity parameters revealed that traditional calculation methods can yield significant errors by neglecting atmospheric air entrainment; therefore, a methodology for validating the analytical model to quantify these calculation errors was proposed. Nickel-based coatings were experimentally obtained on the VT9 titanium alloy, characterized by high density and an absence of defects. It was found that the adhesion strength of the coating to the substrate is 30.2 MPa, which exceeds the established industry standards by a factor of two. The high hardness of the resulting layers (up to 290 HV) ensures effective surface protection against wear under harsh operating conditions. Additionally, an analysis of coating stability under internal stresses was conducted, allowing for the prediction of their reliability. The research results are of strategic importance to the Ukrainian aviation industry, as they establish a foundation for addressing the urgent problem of surface friction and wear, as well as for restoring expensive parts and reducing dependence on imported components. Product Description popup.authors Oleksandr Shorinov Andrii Volkov Yevhen Nemanezhyn Oleksii Bondarenko Roman Ipatov Nina Savchenko Victoria Pereverzeva popup.nrat_date 2026-03-02 Close