Pulsed laser deposition of hydroxyapatite-diamondlike carbon multilayer films and their adhesion aspects

摘要

We have developed a layered hydroxyapatite/diamondlike carbon/functionally gradient diamondlike carbon-silver/titanium carbide/titanium carbonitride/titanium nitride composite film using pulsed laser deposition.A diamondlike carbon interlayer between a hydroxyapatite coating and the Ti-6A1-4V alloy can serve several purposes,including preventing corrosion of Ti-6A1-4V alloy,overcoming poor adhesion between the hydroxyapatite coating and the titanium oxide surface,and reducing inflammation at the implant/tissue interface.Titanium nitride,titanium carbonitride (TiC_xN_y),titanium carbide and functionally gradient diamondlike carbon-silver layers were used to improve the adhesion of diamondlike carbon films to Ti-6A1-4V alloy.We envision several potential medical applications for these multilayer materials,including use in orthopedic and dental devices.