FIELD: protective coatings.
SUBSTANCE: The invention relates to protective coatings for medical implants made of titanium nickelide and can be used to reduce the survival time of implants. A method for obtaining a biocompatible coating on products made of monolithic titanium nickelide involves the sequential application of three alternating layers of titanium-nickel-titanium in an atmosphere containing argon, and heating the products to a temperature sufficient for spontaneous initiation of a self-propagating high-temperature synthesis reaction, followed by cooling under the same conditions for 60 minutes to room temperature, while the thickness of the specified layers are chosen equal to 40 ±5 nm, and the products are heated to a temperature of 1000 ±10 °C for 60 ±5 C in a gas medium composed of 80% N and 20% Ar.
EFFECT: The present invention enables to increase the cytocompatibility of the coating by achieving a mixed phase composition of titanium oxides and nitrides with optimal roughness and hydrophilicity characteristics.
1 cl, 6 dwg, 1 ex
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