In vitro assessments on bacterial adhesion and corrosion performance of TiN coating on Ti6Al4V titanium alloy synthesized by multi-arc ion plating

► Continuous and compact TiN coating was formed on TC4 by multi-arc ion plating. ► The obtained coating consisted of pure TiN. ► TiN coating could significantly reduce bacterial adhesion. ► TiN coating showed better corrosion resistance than TC4.