PVD barrier coatings with antimicrobial function for medical implants

Abstract

The technology of PVD coatings made of titanium and hafnium nitrides for implants was developed and properties of coatings were investigated. The coating as a barrier reduces the release of toxic vanadium ions from titanium alloys. The thickness of the coating is 2-5 microns with a characteristic structure size of 20-50 nm. The rate of migration of hafnium and titanium ions from the nitride coating into water is span of pico-femto mol/cm2h. The presence of cytocompatibility with human fibroblasts is shown. The coating is promising for combating microorganisms with high biofilm-forming activity.