Experimental Study of Thermochemical Treated Biomedical 3D Printed Titanium Alloy Implant

Abstract

For medical and dental individual implants are made by additive technology. The patient-specific usable implant material is the Ti alloy (Grade 23). The used 3D printer do LMF (Laser Metal Fusion) process and melts the metal particle by the laser layer by layer. Surface treatment of implants affects mechanical strength, aesthetic and osseointegration properties [1]. Of these, our study investigates the mechanical strength properties of plasma nitride surface treatment. The plasma nitrided 3D printed biomedical Ti alloy (Ti6Al4V, Grade 23) mechanical properties. The influence of the nitrided layer on tribological behaviour of plasma nitrided film was studied using microhardness tester. The microhardness results pointed out that the surface treatment increased the surface hardness and reduced the plastic deformation of the alloy.