METHOD FOR SYNTHESIS OF A RADIOPAQUE SURFACE Ti-Ta-Ni ALLOY WITH AN AMORPHOUS OR AMORPHOUS-NANOCRYSTALLINE STRUCTURE ON TiNi ALLOY SUBSTRATE

摘要

FIELD: chemistry.;SUBSTANCE: invention relates to the chemical-pharmaceutical industry and is a method for synthesis of a radiopaque surface Ti-Ta-Ni alloy with an amorphous or amorphous-nanocrystalline structure on a TiNi alloy substrate, carried out by an additive method by repeated alternation in a single vacuum cycle of deposition operations of an amorphous film and its liquid-phase mixing with the substrate components, characterized in that a film of the Ti_60-70Ta_40-30 (at%) compound is used as an amorphous film deposited by simultaneous magnetron sputtering of targets from Ti and Ta, and subsequent liquid-phase mixing of the film and substrate components and high-speed quenching of a molten surface layer is carried out using a wide-aperture low-energy high-current electron beam (LEHCEP) with the parameters: pulse duration 2÷3 mcs, energy density 1.5÷2.5 J/cm².;EFFECT: invention makes it possible to synthesize the surface Ti-Ta-Ni alloy with the amorphous or amorphous-nanocrystalline structure on the TiNi substrate with an increased level of radiopaque and thromboresistance.;6 cl, 6 dwg, 2 tbl, 4 ex