Nanostructured biocompatible Ti-TiN coating for implants with improved functional properties
Sergey N. Grigoriev, М. A. Volosova, Mars Migranov, Ilya V. Minin, С. Р. Шехтман, Nadegda A. Suhova, Vladimir D. Gurin, Petr M. Pivkin
Abstract
The resistibility to corrosion of biocompatible metals is significantly reduced when plastic deformation of the surface layer is more than 0.5%. To increase the successful reliability of consolidation of bone tissues is proposed to use implants made of chemically pure titanium with a nanostructured biocompatible Ti-TiN coating to improve functional properties. An increase in functional properties is provided by improving coating deposition technology in an arc discharge plasma, which does not allow the formation of any impurities. The use of a high-current diffusion discharge in a vacuum chamber forms a controlled microstructure and the morphology of the implant surface, which increases adhesion during healing. The effectiveness of the proposed coating of implants is proved by the results of comparative tests on the study of the functional properties of samples without coating, with a coating applied by traditional technology and improved technology with a high-current diffusion discharge.