FIELD: metallurgy.
SUBSTANCE: invention relates to coating metal surfaces using concentrated energy flows, particularly, to production of titanium implants on surface, and discloses a method of applying bioinertic tantalum coatings modified with nitrogen ions on titanium implants. Method includes electric explosion of tantalum foil with mass of 100–600 mg, formation of explosion multiphase plasma jet from explosion products, fusion of the surface of the titanium implant with absorbed power density of 1.5–1.8 GW/m2, deposition on the surface of the explosion products, formation of a bio-inert tantalum coating on it, nitriding during 3–5 hours at 500–600 °C and subsequent periodic pulsed electron-beam treatment of the surface coating when the absorbed energy density of 20–40 J/cm2, a pulse duration of 150–200 microseconds and amount of 3–5 pulses. Method enables to form a surface layer with high adhesion of the coating with a titanium substrate, low roughness, a homogenized structure and antibacterial activity, which increases the service life of the implants.
EFFECT: invention can be used in medical equipment, traumatology and orthopedics.
1 cl, 2 ex, 3 dwg
