METHOD FOR APPLICATION OF BIOINERT COATINGS BASED ON TITANIUM, NIOBIUM, ZIRCONIUM AND NITROGEN ON TITANIUM IMPLANTS Russian patent published in 2023 - IPC A61L27/06 A61L27/30 C23C4/10 C23C4/134 C23C8/24 

FIELD: coatings based on titanium, niobium, zirconium and nitrogen on titanium implants.

SUBSTANCE: invention can be used in medical technology, traumatology and orthopedics as bioinert coatings with an antibacterial effect. A three-layer composite electrically exploded conductor is subjected to an electric explosion, one of its layers is made of titanium foil weighing 50-500 mg, the second and third layers are made respectively of niobium and zirconium foil with weights equal to 0.5-2.0 of the mass of the first layer. A pulsed multiphase plasma jet is formed from the explosion products. The surface of a titanium alloy implant is melted with it at an absorbed power density of 1.5-1.8 GW/m². The explosion products are deposited on the titanium implant surface and a bioinert coating based on titanium, niobium and zirconium is formed on it. Then nitriding is carried out for 3-5 hours at a temperature of 500-600°C. Subsequent repetitively pulsed electron-beam treatment of the coating surface is carried out at an absorbed energy density of 20-40 J/cm², a pulse duration of 150-200 mcs, and the number of pulses from 3 to 5.

EFFECT: obtaining a bioinert coating based on titanium, niobium, zirconium and nitrogen on the surface of medical titanium implants with antibacterial activity.

1 cl, 5 dwg, 2 ex