Bio-corrosion behavior, antibacterial property and interaction with osteoblast of laser in-situ fabricated Ti–Si–Cu coatings on Ti–6Al–4V alloy

Abstract

Ti–Si–xCu coatings (TS-xC, x = 5, 10 and 15 wt.%) with advanced bio-corrosion resistance, excellent antibacterial property and biocompatibility were laser cladded on Ti–6Al–4V (TAV) substrate which is widely used as endosseous implants. The bio-corrosion resistance of the TAV substrate was improved due to the presence of Ti5Si3 and TiCu phases in the coatings. The addition of Cu in the precursor contributes to the improvement of the antibacterial property of TAV substrate. Meanwhile, induced normal cytoskeleton, well-developed focal adhesion contacts, significant higher cell attachment and proliferation rate were observed for the TS-xC coated samples due to the formation of micro-textured morphology and presence of new phases. The bio-corrosion resistance and antibacterial property depend on Cu content addition in the TS-xC precursor. The results provide a way to fabricate such multiple functional biocoating that would improve the bio-corrosion resistance, antibacterial performance and biocompatibility of TAV.