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Information × Registration Number 0211U008564, 0110U004563 , R & D reports Title Development of forming technology of functional surface layers on the details of fastening from the VT22 titanium alloy for providing of enhanced performance level popup.stage_title Head Fedirko Victor, Registration Date 29-06-2011 Organization Karpenko Physico-Mechanical Institute of the National Academy of Science of Ukraine popup.description2 In this paper, based on the experience of surface engineering of titanium alloys in FMI National Academy of Sciences, suggested to increase the wear-and fretingstoykosti, corrosion resistance while maintaining a regulated structure and level of strength to combine the aging process in the hardening treatment of the alloy VT22 with a chemical-thermal treatment of low-temperature thermodiffusion saturation of the interstitial elements (oxygen, nitrogen), including the unsteady conditions of saturation. To this end, we studied the possibility of formation of hardened surface layers of oxidation, nitriding and oksinitrirovaniem of controlled low-density gas environment in the temperature-time range of aging alloy VT22 (T = 600 ± 50 ° C, t = 4 h) as in isothermal mode, during thermal cycling. The obtained hardened layers were tested for corrosion resistance and wear resistance, determined their phase-structural state (phase composition, hardness, surface roughness, etc.). It is shown that low-temperature (T = 600 ± 50 ° C) oxidation and nitration of alloy VT22 is possible if the thermal diffusion saturation of a rarefied gas medium at a regulated change of the gasdynamic parameters and the use of transient saturation conditions (cycling), which provides a hardened layer depth of 40 microns hardness of the metal surface up to 7 GPa and the film thickness (oxide or nitride) to 0.2 microns. Formation on the surface of titanium alloy VT22 oxide and oxynitride films provide corrosion protection surface, can improve the wear resistance of the alloy VT22 paired with the D16 in the corrosive medium (3% NaCl), reducing the friction coefficient at 25 ... 38%. Product Description popup.authors Лук'яненко Олександр Геннадійович Пічугін Анатолій Тимофійовмич Погрелюк Ірина Миколаївна popup.nrat_date 2020-04-02 Close