Наноразмерные биосовместимые антибактериальные и защитные покрытия, осаждаемые вакуумно-плазменными методами

Abstract

The present report is dedicated to the study of nanosized coatings based on diamondlike carbon with copper (DLC-Cu) antibacterial agent and titanium oxynitride coatings. The coatings were deposited from the products of vacuum pulsed cathodicarc discharge with a central cathode made of graphite and copper and separated flow of constant-current cathodicarc discharge with titanium cathode in the atmosphere of nitrogen and oxygen mixture, respectively. The coatings were deposited onto samples of titanium and stainless steel used in the production of orthopedic implants. The DLC-Cu coatings showed both improved biocompatibility to human cells (HUVEC) and significant bactericidal activity against E. coli strain and, thus, are perspective for improving titanium implants union rates and decreasing the chances of implant surface bacterial colonization. Nanosize bioactive coatings on the base of titanium oxynitride deposited onto stainless steel possess protective properties.